Powys-Lybbe forbears
| Robert Maduit Lord of Hanslap ( - 1222) |
Waleran de Newburgh Earl of Warwick (<1153 - <1204) |
| Alice de Harcourt ( - >1212) |
m. ca 1220
| William (III) Mauduit Lord of Hanslap | Alice de Newburgh |
 b. bef 1194d. bef 18 Feb 1257, Ob 31 H III . Only s. Of Hanslape, Bucks. Chamberlain of Exchequer. With barons vs k. John. |
b. d. bef 1263, (living in 1246) . Heir to her nephew and niece. |
Children
| William (IV) Mauduit Earl of Warwick > Isabel Mauduit < |