Henry St John, 4th Viscount Bolingbroke (6 March 1786 – 1 October 1851) was the son of George Richard St John, 3rd Viscount Bolingbroke and Charlotte Collins.
[1] Henry married Maria, daughter of Sir Henry Paulet St John Mildmay in 1812 at St George's, Hanover Square in 1812.
The couple had six children - Maria Louisa (b.
Henry died on 1 October 1851 while visiting his daughter in Elgin.
[2] He was buried in the family vault at St Mary's Church in Lydiard Tregoze on 7 October 1851.