| William II de FERRERS Earl of Derby (ca1168 - 1247) |
Sir William Marshal Earl of Pembroke (ca1146 - 1219) |
| Agnes of Chester Lady of Chartley ( - 1247) |
Isabel de CLARE (1173 - 1220) |
| William de FERRERS Earl of Derby | Sibyl le MARESCAL (MARSHAL) |
| b. ca 1193 d. Mar 1253/1254, Evington (Leics) England br. 31 Mar 1254, Merevale Abbey [near Atherstone] (Warwks) England occ. V earl of Derby {1247/8-} edu. rel. |
b. d. bef 1238 br. occ. edu. rel. |
| Spouses: 1, 2 |
| > Isabel FERRERS < > Maud (de Kyme) de FERRERS Vicomtesse de Rochechouart < > Joan de FERRERS < |