Edinburgh Castle as a Fortress

Each major claim carries one of three labels. established means supported by primary records, official bodies or several independent reliable sources. shared means the core fact is sound but sources disagree on details, dates or interpretation. traditional means widely repeated but not traceable to a primary or independent source.

• Established (documented): The medieval and early modern siege history is very well documented from chronicles, state papers and standing-building archaeology — the 1296 capture, the 1314 recapture, the Lang Siege of 1571–73, the 1650 Cromwellian siege, the 1689 siege, and the failed Jacobite attempts of 1715 and 1745. The castle's continuous royal and then military use from the 11th century is established.
• Shared/Traditional: The narrative details of the daring escalades (Randolph's 1314 climb guided by William Francis; Douglas's 1341 ruse) derive substantially from later narrative chronicles (notably John Barbour's The Brus and Walter Bower's Scotichronicon), written decades or generations after the events. The core events are accepted; the colourful detail is traditional.
• Disputed / requires precision: (1) The earliest origins. Occupation back to the late Bronze Age is real, but the idea of a continuously occupied fortress from prehistory, and the "longest continuously occupied site" superlative, are hedged even by specialists. The legendary material (the "Maidens' Castle," Arthurian shrines, Ebraucus) is myth. (2) The "most besieged" superlative, which is a defensible but qualified claim resting on Caldwell's research.

Early fortification origins — examined precisely

established The strategic logic of the site is geological. Castle Rock is the plug of an extinct volcano that erupted roughly 340–350 million years ago; glaciation later scoured away the softer surrounding rock, leaving a "crag and tail" with sheer cliffs on the south, west and north, and a single gentle approach from the east along what became the Royal Mile. Every fortification here for three millennia has exploited that one natural advantage. The rock's one great weakness was water: despite a deep well in the Upper Ward, the supply frequently failed in drought or siege — a vulnerability that proved decisive in 1573.

shared On the earliest human presence, precision matters. The definitive modern excavation — Stephen Driscoll and Peter Yeoman's Excavations within Edinburgh Castle in 1988–91 (Society of Antiquaries of Scotland, Monograph 12, 1997) — recovered pits, hearths and cobbled surfaces at the base of the sequence, with associated pottery, producing radiocarbon dates in the late Bronze Age. Historic Environment Scotland cites c. 900 BC and describes a "proven 3,000-year history of human settlement." That earliest date is regarded as secure; however, the nature and scale of that earliest occupation is not. Specialists (for example the Oxford Atlas of Hillforts of Britain and Ireland) caution that the interpretation of an enclosed or fortified summit in the Bronze Age is "tenuous," and that only the fringes of the site were excavated. The frequently repeated claim that Castle Rock is "the longest continuously occupied site in Scotland" is therefore properly hedged — Wikipedia says "potentially"; HES states more strongly that it is "the longest continuously inhabited place in the UK." Our verdict: continuous occupation over roughly 3,000 years is well supported; a continuously occupied fortress from prehistory is not demonstrated.

established The Iron Age and Roman-era evidence is firmer. Excavation revealed roundhouses and paved surfaces, and Roman-period finds — up to around fifty vessels of pottery, a silver denarius of Hadrian, glass and brooches — pointing to trade between the local Votadini and the Romans from Agricola's campaigns (c. AD 80) into the Antonine period (c. AD 140). There is no evidence the Romans occupied the rock themselves. Ptolemy's 2nd-century map names a Votadinian settlement "Alauna" ("rock place"), possibly — but not certainly — the Castle Rock; Driscoll and Yeoman tentatively suggested the settlement of this period might even have been a broch, comparable to Edin's Hall near Duns. For the post-Roman "Dark Age" centuries the evidence is essentially midden (refuse) deposits with no surviving structures, though those deposits "show no clear break since Roman times." Around AD 600 the poem Y Gododdin refers to Din Eidyn, generally identified with the rock, and Irish annals record a siege of "Etin" in 638 — though even the identification of that "Etin" with Edinburgh has been questioned by recent scholars.

traditional Everything earlier or more colourful than this belongs to legend. Medieval and early modern writers called the fortress Castellum Puellarum, the "Maidens' Castle," and spun tales of Pictish princesses, a shrine to Morgain la Fee, or a foundation by the legendary king Ebraucus in 989 BC. These stories were already dismissed as "apocryphal" by 19th-century antiquarians and are not history. The first reliably documented siege is that of 1093, when Donald Bane besieged the castle after the death of Malcolm III and the death of Malcolm's wife, the future St Margaret; even here the fullest account comes from the later Scotichronicon, and what stood on the rock in 1093 may have been a fortified royal residence rather than a stone castle in the later sense.

The Wars of Independence and the 1314 recapture

shared Edinburgh Castle sat at the heart of the Wars of Scottish Independence. In 1296 Edward I of England, invading Scotland, brought up siege engines and bombarded the castle for three days (the Chronicle of Lanercost records 158 stones fired by three engines); the Scottish garrison surrendered, and an English garrison then held the rock for eighteen years.

shared The date needs correcting. Edward I spent March 1296 at the siege and sack of Berwick, and the Scottish field army was not beaten until Dunbar on 27 April. The historian G. W. S. Barrow, in Robert Bruce and the Community of the Realm of Scotland (1965; 4th edn 2005), places the siege of Edinburgh after Dunbar, when resistance collapsed: Roxburgh was surrendered, Stirling abandoned, and Edinburgh "held out for only a week or so". On Barrow's chronology that puts the siege between late April and midsummer 1296, when the Scots leaders sent to Edward at Perth to ask for terms. Either way, "March 1296" is wrong. Barrow adds that in early summer 1296 Edward ordered the removal from Edinburgh to London of the Scottish regalia, a mass of plate, jewels and relics, and the Black Rood of St Margaret, the most venerated relic in Scotland. In late 1297 the English garrison defied Wallace, and it held throughout the guardianships that followed; in 1299 its constable, Sir John Kingston, was sending Edward reports on the Scottish leaders.

shared The recapture of 14 March 1314 is the castle's most celebrated military episode. Thomas Randolph, Earl of Moray and nephew of Robert the Bruce, had been besieging the castle when a member of his force, William Francis (Frank), revealed that as a youth he had climbed the north face by a secret route to visit a woman in the town. A picked party of some thirty men scaled the cliff by night with rope ladders, fought their way to the gate, overcame the garrison and took the fortress. Bruce immediately ordered the castle "slighted" — its defences destroyed — so the English could never again use it as a stronghold; tradition holds that only St Margaret's Chapel was left standing. Three months later Randolph commanded a division at Bannockburn.

traditional The core event is well established, but the vivid detail comes largely from John Barbour's verse epic The Brus, written some six decades later and with clear literary purposes; the escalade is history, the dialogue and precise choreography are traditional embellishment.

established Not all of the detail is Barbour's. Barrow's account, which draws on the near-contemporary Lanercost Chronicle as well as on Barbour, gives the following. Randolph struck three weeks after James Douglas had taken Roxburgh Castle on the night of 19–20 February 1314, and was, in Barrow's view, plainly determined not to be outdone. William Francis was a local man whose father had served in the castle; as a youth he had climbed out at night, without his father's knowledge, to visit his sweetheart in the town. On the dark night of 14 March a diversion was made at the East Port, which Lanercost calls "the only place where an assault could be made" (as quoted by Barrow), drawing the garrison there. Meanwhile Francis and the assault party climbed the steep north precipice and swung light ladders onto the parapet; once enough men were up, they opened the East Port to the larger force outside. Most of the defenders were killed. Their commander, the Gascon Sir Pierre Libaud, entered Bruce's service but was executed for treason soon afterwards. The king rewarded Francis with forfeited lands at Sprouston in Roxburghshire, and in line with his consistent policy had both Edinburgh and Roxburgh razed. Randolph had been made Earl of Moray in 1312. The castle changed hands again — retaken by the English around 1335 and recovered for the Scots in 1341 by Sir William Douglas, Knight of Liddesdale, in a ruse in which his men, disguised as merchants delivering supplies, jammed a cart in the gateway to prevent the portcullis dropping. Later in the century David II (returned from English captivity) rebuilt on a grand scale, raising the great L-plan David's Tower from 1367.

The Lang Siege and the Wars of the Three Kingdoms

established The single most destructive episode was the Lang Siege of 1571–73, part of the Marian civil war. Sir William Kirkcaldy of Grange held the castle for the imprisoned Mary, Queen of Scots, against the King's party governing in the name of the infant James VI. Kirkcaldy had some 40 guns but, by early 1573, only a handful of trained gunners left, and the besiegers had poisoned St Margaret's Well, the castle's water source. The stalemate broke only when an English force sent by Elizabeth I arrived with heavy artillery — including great bombards — and battered the defences over several days in May 1573. David's Tower collapsed and the medieval castle was largely wrecked; Kirkcaldy surrendered and was hanged. This is why so little of the castle predates 1573. Regent Morton then rebuilt, raising the distinctive Half Moon Battery (1573–88) over the ruins of David's Tower, along with the Portcullis Gate — an artillery-age refortification.

established The Wars of the Three Kingdoms brought repeated captures. Covenanter forces under Alexander Leslie took the castle in 1639 in a celebrated action lasting about half an hour — Leslie blew in the gate with a petard, without loss of life — and again in 1640, that time after heavier fighting under Patrick Ruthven's determined royalist defence that cost many lives. In 1650, following his victory at Dunbar, Oliver Cromwell's New Model Army besieged the castle; its commander Walter Dundas put up little resistance and surrendered, for which he was widely accused of cowardice. Cromwell garrisoned the castle, turning the Great Hall into barracks — the start of the castle's long transformation into a primarily military installation. It was in this period that the Honours of Scotland were famously smuggled out and hidden (ultimately under the floor of Kinneff Old Kirk) to keep them from Cromwell.

The Jacobite risings and the '45 — precisely clarified

established Edinburgh Castle features in every Jacobite crisis, but it is essential to be precise: the castle was never taken by the Jacobites.

established The last true siege came in 1689, at the start of the Jacobite era. The Catholic Duke of Gordon held the castle for the deposed James VII against the new Williamite regime. Blockaded from 18 March, and famously urged to hold out by Viscount Dundee, who climbed the west face to confer with him, Gordon endured about three months of bombardment before surrendering on 14 June 1689 with supplies and powder exhausted.

established In 1715 a party of around 80–100 Jacobites under Lord Drummond attempted a night escalade with inside help from bribed sentries — but the rope ladder proved too short, the alarm was raised, and the attackers were captured. The plot's collapse became almost proverbial.

established In 1745 the Jacobite army under Charles Edward Stuart occupied the city of Edinburgh and Holyrood without a fight in September, but the castle held out under its aged deputy governor, General George Preston. Prince Charles ordered a blockade from 29 September; the elderly Lieutenant-General Joshua Guest and the garrison replied by firing on Jacobite positions in the town, causing civilian casualties, and the blockade was lifted on 5 October under an informal truce. The Jacobites lacked the siege artillery to reduce the fortress. 1745 is thus the castle's last military action, but not a capture — a distinction routinely blurred in popular accounts. (A cannonball reputedly fired from the Half Moon Battery in the '45 remains embedded in Cannonball House on Castlehill.)

Later garrison and prison history

established From the mid-18th century the castle's role was that of a garrison, arsenal and prison rather than a contested fortress. General Wade reported the defences decayed in 1728, prompting a major strengthening through the 1720s–30s (the Argyle and Mills Mount batteries and the western defences).

established The vaults beneath Crown Square became a prison for prisoners of war. From 1757, during the Seven Years' War, French privateersmen were held here; over the following decades they were joined by American, Spanish, Dutch, Italian and Polish captives, plus British and Irish rebels. As Historic Environment Scotland records, "Between 1757 and 1814, well over a thousand of prisoners were held in the labyrinth of vaults below Crown Square," with the peak — more than 1,000 held at one time — reached around 1812; most were captured seamen. They left an extraordinary record scratched into the oak vault doors: ships, names, a hangman's gibbet with "Lord Nord" (Lord North), and — carved around 1780 by an American War of Independence prisoner — one of the earliest known depictions of the Stars and Stripes in Britain, now conserved by Historic Environment Scotland. Mass escapes, including one of 49 prisoners through a hole in the south wall in 1811, led to the vaults' closure as a war prison in 1814. A purpose-built military prison on the castle's west side continued in use into the 20th century. The army garrison formally moved out to the new Redford Barracks in 1923, though a military presence remained.

Current military status and ceremonial significance

established The military presence at Edinburgh Castle is unbroken to this day — a continuity dating from the Restoration garrison of 1660. The site is jointly operated by Historic Environment Scotland (as a Scheduled Monument and visitor attraction) and the British Army. It serves as the regimental headquarters of the Royal Regiment of Scotland and the Royal Scots Dragoon Guards, houses those regiments' museums together with that of the Royal Scots, and is home to the City of Edinburgh Garrison. The army's role today is described as largely ceremonial and administrative rather than defensive.

established The two most visible living traditions are the One O'Clock Gun and the Royal Edinburgh Military Tattoo. The gun was first fired on 7 June 1861, as an audible time signal to complement the falling time-ball on the Nelson Monument on Calton Hill (installed 1852), allowing ships in the Firth of Forth to set their chronometers and so calculate longitude. It has been fired at 1 p.m. six days a week (excepting Sundays, Good Friday and Christmas Day) ever since, from the Half Moon Battery and, latterly, Mills Mount Battery. As the castle's own account notes, "The original gun was a 64-pounder. Since 2001, a 105mm field gun has instead been fired from the Mills Mount Battery." The Tattoo, staged on the Esplanade since 1950, has become one of the world's best-known military pageants and a defining image of the castle. The Scottish National War Memorial (1927) and the National War Museum also stand within the walls — the memorial being the dedicated subject of Card #24 and referred to here only as part of the castle's institutional fabric.

Overall military-historical significance

shared Edinburgh Castle's significance is threefold. Militarily, it was one of the principal royal strongholds of the Kingdom of Scotland, a fortress generally considered impregnable except by attrition, stealth or overwhelming artillery — and its story is a compressed history of the evolution of siege warfare, from stone-throwing engines in 1296, through the great gun Mons Meg in the 15th century, to the artillery that levelled it in 1573 and the trench-and-battery siegecraft of 1689. Institutionally, it was simultaneously royal residence, arsenal, treasury, mint, national archive, prison and garrison. Symbolically, from the early 19th century it became a national icon — a role sealed by the return of Mons Meg (1829) and the rediscovery of the Honours of Scotland (1818). The "most besieged" superlative captures something true about that turbulence, but it should be attributed to its source rather than asserted as fact (see Caveats).

• The castle destroyed itself to stay Scottish. After the 1314 recapture, Robert the Bruce deliberately ordered the fortress slighted so the English could never hold it again — a rare case of a victor demolishing his own prize.
• Its greatest siege was ended by English guns fighting for the Scottish government. In 1573 Elizabeth I sent heavy artillery to help the King's party batter down Kirkcaldy of Grange, who was holding the castle for Mary, Queen of Scots.
• The Half Moon Battery is built on the tomb of a tower. The curved battery that gives the castle its familiar profile was raised over the shattered stump of David's Tower, whose lower storeys still survive, entombed within it.
• A too-short ladder saved the castle in 1715. A Jacobite escalade failed because the scaling ladder, made by an absent conspirator, could not reach the wall-head; the raiders were left stranded until dawn.
• The One O'Clock Gun's only "hostile" firing was at a Zeppelin. The time-signal gun is said to have been brought into action just once — firing blanks, ineffectually, during the raid of 2 April 1916 by the German airship L14 that bombed Edinburgh.
• Mons Meg could throw a 150 kg stone two miles — but moved at walking pace. The bombard (recorded by HES at 6,969 kg) was gifted to James II in 1457 and could fire "a 150kg gunstone for up to 3.2km (2 miles)," yet was so heavy that "even a team of oxen couldn't move her more than 5km (3 miles) a day"; her barrel finally burst in 1681.
• American prisoners carved one of the earliest Stars and Stripes in Britain. A War of Independence captive scratched a 13-stripe flag into a vault door around 1780; it survives today.
• The garrison never left. A continuous military presence has been maintained at the castle since 1660 — making it one of the longest-garrisoned sites in Britain, even though its role is now ceremonial.

• Myth: an unbroken fortress has stood on Castle Rock since prehistory or the age of King Arthur. The archaeology supports securely dated occupation from the late Bronze Age (HES: c. 900 BC) and continuous settlement over roughly three millennia, but the nature and scale of the earliest occupation is uncertain and specialists explicitly hedge it; only the fringes of the site have been excavated.
• Disputed: Castle Rock is "the longest continuously occupied site" in Scotland or the UK. It is probable but unproven; Wikipedia says "potentially", while HES states it more strongly.
• Myth: the "Maidens' Castle", Arthurian shrines and King Ebraucus. These are legends, dismissed by antiquarians as far back as the 19th century.
• Disputed: the AD 638 siege of "Etin" was at Edinburgh. The identification has been questioned by recent scholarship.
• Disputed: Edinburgh is "the most besieged place in Great Britain". The claim is not folklore: it rests on David Caldwell's research for HES, cited as a total of 26 sieges over the castle's documented history. But the total depends on how "siege" is defined (blockades, escalades and full artillery sieges are counted together), and Caldwell himself flags that the pre-1093 episodes may not have happened or may not even refer to this rock, while describing his own count for 1093–1544 as "almost certainly an underestimate". Some secondary sources give lower counts such as 23, and vary between "Britain", "Europe" and "the world".
• Myth: Edward I besieged Edinburgh Castle in March 1296. The siege followed the Scottish defeat at Dunbar on 27 April and, according to Barrow, lasted only about a week.
• Disputed: the detail of the 1314 escalade. The near-contemporary Lanercost chronicle reports the attack and the diversion at the gate; the number of climbers and the dialogue come from Barbour's The Brus, written some six decades later.
• Myth: the Jacobites captured Edinburgh Castle in 1745. They held the town but never took the castle; the 1745 blockade was its last military action, not a capture.