Sewallis Shirley, ‘no great genius’, but a noted lady-killer,Horace Walpole to Mann, 15 Sept. 1746; HMC Egmont Diary, ii. 248. was returned by the 1st Duke of Bridgwater for Brackley at a by-election in 1742 in the place of the former Member, Dr. George Lee, who had been refused re-election by the Duke on vacating his seat by accepting office. During this Parliament he voted with the Opposition but in 1747, Brackley having come under the control of Col. Richard Lyttelton, the stepfather of the new Duke of Bridgwater, a minor, Shirley adapted his politics to Lyttelton’s, and was classed in the new Parliament as a government supporter. On the death of the 2nd Earl of Orford in 1751 he married his widow, with whom, according to her brother-in-law, Horace Walpole, he had been living since 1746.To Mann, ut supra. She returned him for Callington in 1754 but two months later they separated and he was not put up for Callington again. He died 31 Oct. 1765.
