Background
He was the son of Roger Jenyns of Hayes, Middlesex (1636-1693) and his wife Sarah Latch (d 1703), daughter of Joseph Latch.
He was the son of Roger Jenyns of Hayes, Middlesex (1636-1693) and his wife Sarah Latch (d 1703), daughter of Joseph Latch.
Their children were:
Soame Jenyns (1704–1787), the Member of Parliament and writer Sarah Jenyns (1667–1670) died aged 3 years
Thomas (1670–1696) unmarried
Dorothy (?-?) married Thomas Biggs
He served as High Sheriff of Cambridgeshire and Huntingdonshire in 1701 and was knighted when he bought the Manor of Allington and Vaux, including Bottisham Hall. As well as serving as Sheriff, Jenyns also served as the Receiver & Expenditor General for the Bedford Level Corporation, the company which drained the Great Level of the Fens in the mid-seventeenth century.