John Sheffield, 1st Duke of Buckingham and Normanby English poet and politician (1648–1721) (1648–1721) Parents Lady Elizabeth Cranfield Edmund Sheffield, 2nd Earl of Mulgrave Children Sir Charles Sheffield, 1st Baronet Katharine Sophia Herbert Robert Sheffield John Sheffield, Marquess of Normanby Edmund Sheffield, 2nd Duke of Buckingham and Normanby Mary Sheffield Charlotte Herbert Partners Ursula Stawel Catherine Sheffield, Duchess of Buckingham and Normanby Catherine Greville
