Cornelius married Frances Ponsonby on 13 Dec 1774. Frances (daughter of Rt.Hon. John Ponsonby and Elizabeth Cavendish) was born on 18 Feb 1757; died on 25 May 1827 in Tunbridge Wells, Kent. [Group Sheet] [Family Chart]
Cornelius married Eleanor Butler on 11 Aug 1808 in Dublin, County Dublin, Ireland. Eleanor (daughter of John Butler, 17th Earl of Ormonde and Susan Frances Elizabeth Wandesford) was born in 1788; and died. [Group Sheet] [Family Chart]