in Parliament.

He was succeeded in the baronetcy and barony of Rockingham by his first cousin once removed, Thomas Watson-Wentworth, 1st Earl of Malton, who became the sixth Baron. He was the son of the Honourable Thomas Watson-Wentworth, third son of the second Baron. He had adopted the additional surname Wentworth when he inherited the estate of his maternal uncle, William Wentworth, 2nd Earl of Strafford,