On Sunday the fourteenth of August, I discovered that the Preston family married into the House of Stewart, and thus my family are kin to this royal family that includes Princess Diana and her two sons, William and Harry Windsor. Now I know why the Queen stayed at Blair House, and why John Breckenridge fled to England after he lost the Civil War – that the House of Stewart may have backed! This is huge!

She was the daughter of William Stewart, 1st Viscount Mountjoy and Hon. Mary Coote.1,2 From 1692, her married name became Preston.2 From 1709, her married name became Forbes. As a result of her marriage, Hon. Mary Stewart was styled as Countess of Granard on 24 August 1734.
Children of Hon. Mary Stewart and Phineas Preston
Jane Preston+2 b. c 1690, d. a 12 Nov 1746
Mary Preston2 b. 1696, d. 1749
Colonel John Preston+2 b…