Sir Henry St John (1590-c.1642) was an English politician who sat in the House of Commons between 1621 and 1625.
[1] He was knighted on 24 July 1619 at Bletsoe together with his brother Beauchamp, MP.
[2][3] Apart from Beauchamp, four other brothers, Oliver, Rowland, Anthony and Alexander were to become MPs.
[4] In 1621 St John was elected Member of Parliament for Huntingdon.
[1] His eldest brother Oliver inherited the Barony and became Earl of Bolingbroke.