Robert married Lady Grace Montgomerie on 19 Jan 1710 in Kilwinning, Ayrshire, Scotland. Grace (daughter of 9th Earl of Eglinton Alexander Seton Montgomerie and Margaret Cochrane) was born in 1689 in Eglinton, Ayrshire, Scotland; died in Jan 1713 in Carnwath, Lanarkshire, Scotland. [Group Sheet] [Family Chart]