 The assassination left the king's seven-year-old son to reign as James II. After the execution of a number of suspected conspirators, leadership fell to Archibald Douglas, 5th Earl of Douglas, as lieutenant-general of the realm. After his death in 1439, power was shared uneasily between the Douglas family, William, 1st Lord Crichton, Lord Chancellor of Scotland and Sir Alexander Livingston of Callendar. A conspiracy to break the power of the Douglas family led to the "Black Dinner" at Edinburgh Castle in 1440, which saw the judicial murder of the young William Douglas, 6th Earl of Douglas and his brother by Livingstone and Crichton. The main beneficiary was the victims' great uncle James Douglas, Earl of Avondale who became the 7th Earl of Douglas and emerged as the main power in the government.
