He was the seventh child of John Henry Parnell and his American wife Delia Tudor Stewart . He was the third son and seventh child of John Henry Parnell ( 1811 â `` 1859 ) , wealthy Anglo-Irish landowner , and his American wife Delia Tudor Stewart ( 1816 â `` 1898 ) of Bordentown , New Jersey , daughter of the American naval hero , Admiral Charles Stewart ( 1778-1869 ) ( the stepson of one of George Washington 's bodyguards ) .