Background
Jennings was born at Scotton, the son of Jonathan Jennings of Ripon, West Riding of Yorkshire and was baptised at Farnham, Yorkshire on 30 November 1626.
Jennings was born at Scotton, the son of Jonathan Jennings of Ripon, West Riding of Yorkshire and was baptised at Farnham, Yorkshire on 30 November 1626.
He attended schools at Silsden and Ripon in the West Riding of Yorkshire.
He was admitted at Sidney Sussex College, Cambridge on 7 May 1641. He was admitted at Lincoln"s Inn on 6 October 1646. In 1660, he was elected Member of Parliament for Ripon in the Convention Parliament.
He was re-elected Member of Parliament for Ripon in 1673 for the Cavalier Parliament and sat until 1679.
He was High Sheriff of Yorkshire in 1675. He was re-elected Member of Parliament for Ripon in 1685 and sat until 1687 and in 1690 and sat until 1691.
Jennings died at the age of 64. Jennings married Margaret Barkham, daughter of Sir Edward Barkham, 1st Baronet, of South Acre and of Tottenham High Cross, Middlesex.
Cavalier Parliament]
In 1659, Jennings was elected Member of Parliament for Ripon in the Third Protectorate Parliament.