John Venn (1586 – 28 June 1650) was an English politician who sat in the House of Commons from 1641 to 1650.
[3] In September 1640, as one of the leaders of the Puritan militants, he sent a petition to King Charles demanding religious reform.
[4] In 1642, he fought in the army of the Earl of Essex, and following the battle of Edgehill was appointed governor of Windsor Castle, a position he retained until 1645.
When the pro-Royalist Presbyterian mobs of London seized Westminster, he did not join the pro-Army Independent MPs in seeking asylum with the Army.
He would be one of the few to change sides over the next year and a half and come to support the army against King Charles.