Robert Harley, 1st Earl of Oxford and Earl Mortimer, 1st Earl of Oxford and Earl Mortimer, was born 5 December 1661 in Bow Street, Covent Garden, Greater London, England, United Kingdom to Edward Harley (1624-1700) and Abigail Stephens (c1644-) and died 21 May 1724 Albemarle Street, Westminster, Greater London, England, United Kingdom of unspecified causes. He married Elizabeth Foley (c1663-1691) 14 May 1685 . He married Sarah Middleton (-1737) 4 October 1694 .
|Offspring of Robert Harley, 1st Earl of Oxford and Earl Mortimer and Elizabeth Foley (c1663-1691)|
|Edward Harley, 2nd Earl of Oxford and Earl Mortimer (1689-1741)||2 June 1689||16 June 1741 Dover Street, London, Middlesex, England, United Kingdom||Henrietta Cavendish Holles (1694-1755)|
|Abigail Harley (c1695-1750)||1695||15 July 1750||George Henry Hay, 8th Earl of Kinnoull (1689-1758)|
|Elizabeth Harley (c1697-1713)||1690||20 November 1713||Peregrine Hyde Osborne, 3rd Duke of Leeds (1691-1731)|