Married Grace Whitehead on 30 October 1732. They had 8 children: - Hannah Simpson born 1733 - Elizabeth Simpson born 1735 - William Simpson born 1737 and died 1818 - John Simpson born 1739 and died 1813 - Thomas Simpson born 1742 - Richard Simpson born 1744 and died 1813 - Samuel Simpson born 1747 and died 1803 - Mary Simpson born 1750