Sir Walter St. John 3rd Baronet of Lydiard Tregoze in Wiltshire & of Battersea in London

Sir Walter St John, 3rd Baronet of Lydiard Tregoze in Wiltshire and Battersea in London (May 1622 – 3 July 1708), was the sixth son of Sir John St John, 1st Baronet.

In 1649, Walter married his 2nd cousin Johanna "Joan" St John, daughter of Sir Oliver St. John (MP-Totness) the Chief Justice of England.

On 13 April 1656, his nephew Sir John St John 2nd Baronet had died, and Walter succeeded to the baronetcy, as Sir Walter St John, Baronet. He and Lady St. John had thirteen children, but seven of them did not survive to adulthood. He was the grandfather of Henry St John, 1st Viscount Bolingbroke.

In 1700, Sir Walter signed a trust deed that led to the formation of a school which later became the Sir Walter St John's School of Battersea.

In 1656, Sir Walter also became a Member of Parliament for Wiltshire, and served as MP for that constituency or for the family borough of Wootton Bassett in the same county for most of the rest of his life.

Sir Walter died on 3 July 1708, three years after the death of his wife.

• Updated from MyHeritage Family Trees via son Henry, 1st Viscount St. John by SmartCopy: Jan 11 2015, 6:01:52 UTC
• Updated from MyHeritage Family Trees by SmartCopy: Jan 11 2015, 6:10:42 UTC