In 1772 he purchased Denmylne Castle in Fife. Page 297 of the book "Forty Years a Gambler on the Mississippi" by George Devol, states- "General Scott, the father-in-law of George Canning, made one of the largest winnings ever known. lieutenant is mentioned in one source that she eloped with another manitoba
They had three daughters:
Joan, born 15 March 1776 (three months after her father"s death), who married George Canning;
Henrietta, born 1774, who married William Bentinck, 4th Duke of Portland;
Lucy, born 28 March 1775, who married Francis Stuart, 10th Earl of Moray.