John married Lady Susan Montgomerie on 1 Jul 1739 in Scotland. Susan (daughter of 9th Earl of Eglinton Alexander Seton Montgomerie and Susanna Kennedy) was born about 1725 in Scotland; died on 27 Jul 1754 in Blackadder, Berwickshire, Scotland. [Group Sheet] [Family Chart]
1710 - 1772 (61 years)