Jonathan Rashleigh (19 January 1693 – 24 November 1764) of Menabilly, Cornwall, was a British landowner and Tory politician who sat in the House of Commons for 37 years from 1727 to 1764.
[2] His maternal grandfather was Sir John Carew, 3rd Baronet, M.P., of Antony, Cornwall.
At the 1727 British general election he was returned unopposed on the family interest as Tory Member of Parliament (MP) for Fowey.
[3] He was heir to his brother Philip Rashleigh, a supporter of the Jacobite pretender who died in 1736 without issue, and his half first-cousin Sir Coventry Carew, 6th Baronet of Antony, who died 1748, from whom he co-inherited with his great-nephew Reginald Pole Carew, several manors in Cornwall, including East Antony, Manely Durnford, Langunnet, Little Deviock, Sheviock, Nancolleth, Pensignance, Penventon, Helsett, Drewsteignton and Notter.
Upon Philip's death in 1811, as he had no issue, the family estates passed to Rashleigh's grandson William Rashleigh (the eldest son of his third son), MP for Fowey and Sheriff of Cornwall.