The Treaty of Westminster is finalised between Edward IV of England and the Scottish Lord of the Isles.

The Treaty of Westminster, also known as the Treaty of Westminster-Ardtornish, stands as a pivotal, albeit ultimately unfulfilled, agreement in the complex Anglo-Scottish relations of the 15th century. Signed on 13 February 1462, this clandestine pact represented a desperate political gambit by English King Edward IV of the House of York and an audacious play for greater autonomy by two powerful Scottish magnates.

The Principal Architects of the Treaty

This remarkable treaty was concluded between three key figures, each driven by distinct political ambitions:

Context: A Kingdom Divided and a Throne Contested

The geopolitical landscape of 1462 was one of profound instability:

The Shocking Terms: A Plan to Dismember Scotland

The core of the Treaty of Westminster detailed a radical proposal for the partition of Scotland, should Edward IV succeed in conquering it. The agreement outlined a future where Scottish sovereignty would be effectively dismantled and its territories redistributed under English suzerainty:

This comprehensive partition plan highlighted the extreme lengths to which Edward IV was willing to go to secure his realm and the audacious desires of the Scottish magnates to carve out their own kingdoms from a weakened Scotland.

The "Ardtornish" Connection: A Secret Pact

The "Treaty of Westminster-Ardtornish" designation refers to the dual locations significant to its creation. While the final agreement was likely ratified or confirmed in Westminster, the initial, crucial negotiations and signing by the Scottish representatives occurred at Ardtornish Castle on the Isle of Mull. This remote stronghold of the Lord of the Isles provided the perfect clandestine setting for such a treasonous pact against the Scottish crown, underscoring the secrecy surrounding the agreement.

Unraveling and Legacy: A Treaty Never Implemented

Despite its detailed provisions, the Treaty of Westminster was never brought to fruition. Several factors contributed to its ultimate failure:

Upon its discovery, the Scottish Parliament declared John of Islay a traitor. While he was compelled to forfeit his Earldom of Ross to the Scottish crown and effectively lost his claims to the northern lands promised in the treaty, he was allowed to retain the Lordship of the Isles for a time, albeit in a diminished capacity. The Earl of Douglas, unable to garner sufficient support, remained an exile and never reclaimed his lands.

The Treaty of Westminster, though a historical footnote in terms of its implementation, remains a potent symbol of the fractured politics of 15th-century Britain, revealing the ambitions of powerful magnates and the constant struggle for sovereignty between England and Scotland.

Frequently Asked Questions About the Treaty of Westminster (1462)

What was the primary goal of the Treaty of Westminster (1462)?
The primary goal for Edward IV was to destabilize Scotland and gain an advantage in the Wars of the Roses by securing allies against his Lancastrian rivals who sought refuge in Scotland. For the Scottish signatories, John of Islay and James Douglas, it was an attempt to gain greater autonomy and territorial power, even at the cost of Scottish sovereignty, by becoming vassals of the English crown.
Who were the main parties involved in signing the Treaty of Westminster?
The treaty was signed by Edward IV of England (House of York) and representatives of John of Islay, Earl of Ross and Lord of the Isles, and James Douglas, the 9th Earl of Douglas, who was in exile in England.
Why is it also called the Treaty of Westminster-Ardtornish?
The treaty is known by both names because the initial, secret negotiations and signing by the Scottish lords' representatives took place at Ardtornish Castle on the Isle of Mull, while the final agreement was presumably ratified or confirmed in Westminster.
What territories in Scotland were to be divided according to the treaty?
The agreement proposed that if England conquered Scotland, lands north of the Firth of Forth (the "Scottish sea") would be divided between the Lord of the Isles and the Earl of Douglas, to be held from the English crown. The Earl of Douglas would also hold the lands south of the Firth of Forth, also as a vassal of England.
Was the Treaty of Westminster (1462) ever implemented?
No, the Treaty of Westminster was never implemented. It remained a secret for over a decade and was discovered by the Scottish government around 1476, leading to severe political repercussions for John of Islay but not its execution.
What were the consequences for John of Islay after the treaty's discovery?
Upon the treaty's discovery, John of Islay was declared a traitor by the Scottish Parliament. He was forced to forfeit his Earldom of Ross and most of his mainland possessions to the Scottish crown, though he initially retained the Lordship of the Isles in a diminished capacity.