SPENCER, George, Mq. of Blandford (1766-1840), of Blenheim, Oxon.

b. 6 Mar. 1766, 1st s. of George, 4th Duke of Marlborough, and bro. of Lords Francis Almeric Spencer and Henry John Spencer. educ. privately by Revs. Thomas King and William Coxe; Eton 1776-83; Paris 1783; Christ Church, Oxf. 1784. m. 15 Sept. 1791, Lady Susan Stewart, da. of John Stewart, 7th Earl of Galloway [S], 4s. 1da. summ. to the Lords in his fa.’s barony as Baron Spencer 12 Mar. 1806, suc. fa. as 5th Duke of Marlborough 29 Jan. 1817; took additional name of Churchill 26 May 1817.