1911 Encyclopædia Britannica, Volume 21… (1911)
“ His descendant, Sir Thomas Pelham, 4th baronet (c. 1650–1712) , represented successively East Grinstead, Lewes and Sussex in parliament, and was raised to the House of Lords as Baron Pelham of Laughton in 1706. By his second marriage with Grace (d. 1700) , daughter of Gilbert Holles, 3rd earl of Clare, and sister of John Holles, duke of Newcastle, he had five daughters, and two sons-Thomas Pelham, earl of Clare, duke of Newcastle-on-Tyne and ISf duke of Newcastle-under-Lyme (see Newcastle, Dukes of) , and Henry Pelham (q.v.) . ”
