Thomas married Elizabeth, the widow of John Stewart, 2nd Earl of Buchan, was the daughter of which Scottish nobleman and warlord?
Archibald Douglas, 4th Earl of Douglas: Archibald Douglas, Duke of Touraine, Earl of Douglas, Earl of Wigtown, Lord of Annandale, Lord of Galloway, Lord of Bothwell, and 13th Lord of Douglas (1372–17 August 1424), was a Scottish nobleman and warlord.
i don't know