thumb|Mural monument to Sir John Trenchard, St Andrew's Church, Bloxworth. Displaying the arms of Trenchard impaling Speke
Sir John Trenchard (30 March 1649 – 27 April 1695) was an English politician and landowner.
Life
He belonged to an old Dorset family. He was born on 30 March 1649 at Lytchett Matravers, near Poole, to Thomas Trenchard of Wolverton (1615–1671), and his wife Hannah née Henley (d. 1691). Around 1687–1688, he was pardoned through the good offices of William Penn, and able to return home. Again he entered parliament, but he took no active part in the Revolution of 1688, although he managed to secure the good will of William III. On 29 October 1689, he was knighted by the king, and made Chief Justice of Chester. In 1692, he was appointed Secretary of State. He and the government incurred much ridicule through their failure to prove the existence of a great Jacobite plot in Lancashire and Cheshire in which they had been led to believe.
Family
On 10 November 1682, he married:
Philippa Speke (1664–1743), daughter of George and Mary Speke of White Lackington, Somerset,