Family: William (4th\6th Earl of Derby) De Ferrers / Agnes (Chartley) De Keveliock (F45078)
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Male
William (4th\6th Earl of Derby) De Ferrers
Birth Death 22 Sep 1247 Burial Marriage Father William (Robert) (3rd Earl of Derby) De Ferrers | F42503 Group Sheet Mother Sibyl De Braiose | F42503 Group Sheet
Female
Agnes (Chartley) De Keveliock
Birth Death Yes, date unknown Burial Father Hugh (6th Earl of Chester) De Keveliock | F42792 Group Sheet Mother Bertarde (D'evereux) De Montfort | F42792 Group Sheet
Male
William (5th\7th Earl of Derby) Ferrers
Birth 1193 Death 28 Mar 1254 Burial Spouse Margaret De Quency | F1766 Marriage Spouse Sibyl (Le Mareschal) (of Pembroke) Marshal | F1767 Marriage 14 May 1219