Sir Walter Haliburton 1st Lord Haliburton of Dirleton, Lord High Treasurer of Scotland ¹

Walter married Isobel Stewart, daughter of Sir Robert Stewart 1st Duke of Albany, Earl of Fife, and Govenor of Scotland and Mary Margaret Graham Countess of Menteith, on 7 Feb 1403 in Dirleton Castle, East Lothian, Scotland. (Isobel Stewart was born in 1360 in Dundonald Castle, Ayrshire, Scotland and died on 26 Oct 1416 in Dirleton Castle, East Lothian, Scotland.)