Background
He was born on 27 September 1696, the son and heir of Sir John Saint Aubyn, 2nd Baronet (died 20 June 1714), who married, in 1695, Mary, daughter and coheiress of Peter de la Hay of Westminster.
He was born on 27 September 1696, the son and heir of Sir John Saint Aubyn, 2nd Baronet (died 20 June 1714), who married, in 1695, Mary, daughter and coheiress of Peter de la Hay of Westminster.
Exeter College.
He was entered as gentleman-commoner at Exeter College, Oxford, on 10 June 1718, and created Master of Arts on 19 July 1721. In May 1722 he was returned to parliament for Cornwall, and sat for it until his death. In the House of Commons Saint Aubyn spoke infrequently.
Joining the opposition against Robert Walpole, he was hostile to the Septennial Acting, and the employment of Hanoverian troops with the standing army.
On 9 March 1742, after Walpole"s fall from power, he seconded Lord Limerick"s motion for a committee to inquire into the transactions of the previous two decades, which was defeated by 244 votes to 242. A fortnight later he seconded a motion by Limerick for a secret committee of 21 to examine Walpole"s official acts during the last ten years, and it was carried by 252 votes to 245.
In the polling for the committee he led with 518 votes, but declined to preside. He is said to have also declined a seat on the Board of Admiralty.
Jacobite sympathies were at one remove: he briefed Thomas Carte on parliamentary debates, for the benefit of the Old Pretender, who gained an exaggerated view of Saint Aubyn"s effective support.
He died of fever at Pencarrow, Egloshayle, Cornwall, on 15 August 1744, and was buried in a granite vault in Crowan church on 23 August. Saint Aubyn married at Saint James"s, Westminster, on 3 October 1725, Catherine, daughter and coheiress of Sir Nicholas Morice. She died at Clowance in Crowan on 16 June 1740, and was buried in the same vault.
They had five children.
6th Parliament of Great Britain. 7th Parliament of Great Britain. 8th Parliament of Great Britain.
9th Parliament of Great Britain.