Lord Aubrey was born circa 1710, the eighth son of Charles Beauclerk, 1st Duke of St Albans by his wife Diana.

After some previous service he was made post-captain on 1 April 1731, and appointed to HMS Ludlow Castle, which ship he commanded on the Leeward Islands station for about eighteen months.

Towards dusk, the strangers hoisted French colours but did not shorten sail, and they were not overtaken till nearly ten o'clock.

The fleet, under Sir Chaloner Ogle, arrived at Jamaica on 7 January and joined Vice-Admiral Edward Vernon, under whose command it proceeded to Cartagena on the Spanish main.

There, in the attack on the Boca Chica during the Battle of Cartagena de Indias, Lord Aubrey was killed on 22 March 1741.