1697. He married secondly Catherine Greville, a daughter of Fulke Greville, 5th Baron Brooke, and Sarah ( Dashwood), on 12 March 1698 in St Clement Danes, Westminster. She also died young, on 7 February 1703. Buckingham married, thirdly, Lady Catherine Darnley (1680 – 13 March 1743), an illegitimate daughter of King James II and Catherine Sedley, on 16 March 1705 in St Martin-in-the-Fields, Covent Garden, London. They had three sons of whom Edmund survived, and succeeded him as 2nd Duke of Buckingham (he died unmarried on 30 October 1735, when all his titles became extinct). Around 1706, Buckingham sired an illegitimate son, Charles with Frances Stewart, and, then or afterwards, wife of The Hon. Oliver Lambart, younger son of Charles Lambart, 3rd Earl of Cavan. Upon the death of his half-brother Edmund, 2nd Duke of Buckingham, Charles inherited the family estates and was the first of the Sheffield baronets. Notes References Attribution: Further reading John Sheffield, Duke of Buckingham, The Tragedy of Julius Caesar and the Tragedy of Marcus Brutus, introduction by Michael Wilding, (Shakespeare Adaptations, second series) Cornmarket Press, London, 1970 |- |- |- |- |- John 1648 births 1721 deaths 17th-century English nobility 18th-century English nobility 18th-century English poets Buffs (Royal East Kent Regiment) officers 101 Knights of the Garter Lord-Lieutenants of Middlesex Lord-Lieutenants of the East Riding of Yorkshire Lord-Lieutenants of the North Riding of Yorkshire Lord Presidents of the Council Lords Privy Seal Members of the Privy Council of England English male poets Soldiers of the Tangier Garrison Barons Sheffield