William (4th Earl of Derby) de Ferrers (1168-1247) |
Agnes De Kevelioch (1168- ) |
Elizabeth De Quincy ( -1282) |
William (5th\7th Earl of Derby) Ferrers (1193-1254) |
Margaret (of Coston) De Ferrers ( -1309) |
William (of Groby) de Ferrers (1240-1287) |
Joan\Margaret De Ferrers ( -1310) |