| Mary Clavering | Hendrik van Nassau d'Auverquerque * of Grantham | Henrietta Butler | |
| William Clavering-Cowper * Cowper | Henrietta Nassau d'Auverquerque | ||
| George Nassau Fürst, 3rd Earl, Viscount, Baron v.Cowper * Cowper * of Forwich * of Wingham*26.8.1738, +22.12.1789 |