Alexander Stewart, 6th Earl of Galloway

His sisters included Lady Margaret Stewart (wife of James Carnegie, 5th Earl of Southesk and John St Clair, Master of Sinclair, eldest son and heir apparent of Henry St Clair, 10th Lord Sinclair) and Lady Euphemia Stewart (wife of Alexander Murray of Broughton).

[2] In 1740, the then Lord Garlies, began work on what became Galloway House which adjoined the estate village of Garlieston, on Wigtown Bay.

[2] In 1719, he married Lady Anne Keith, the youngest daughter of the William Keith, 9th Earl Marischal and Lady Mary Drummond (eldest daughter of James Drummond, 4th Earl of Perth).

[6] Together, they were the parents of the following children:[7] Upon the death of Lady Anne in 1728, Stewart, a poet, wrote a set of verses preserved by Sir Alexander Murray of Stanhope and later printed by James Maidment.

[8] In January 1728 (or 1729), he was married to his cousin, Lady Catherine Cochrane, the third and youngest daughter of John Cochrane, 4th Earl of Dundonald and Lady Anne Murray (second daughter of Charles Murray, 1st Earl of Dunmore).