Relationships | Son of Thomas Hay, 7th Earl of Kinnoull, and his wife, Elizabeth, daughter of William Drummond, 1st Viscount Strathallan, and his wife, Elizabeth, daughter of Sir Archibald Johnston; succeeded his father (1719); married Abigail, daughter of Robert Harley, 1st Earl of Oxford (FRS 1712), and his first wife, Elizabeth, daughter of Thomas Foley, 1st Baron Foley of Kidderminster (FRS 1696); brother-in-law of Edward Harley, 2nd Earl of Oxford (FRS 1727) |