Family: William de FERRERS, 5th Earl of Derby / Sibyl MARSHALL (F2239)
m. Bef 14 May 1219
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Male
William de FERRERS, 5th Earl of Derby
Birth Abt 1200 Of, , Derbyshire, England 
Death 24 Mar 1254 , Evington, Leicestershire, England Burial 31 Mar 1254 Merevale Abbey, Merevale, Warwickshire, England Marriage Bef 14 May 1219 Of, Pembroke, Pembrokeshire, Wales Other Spouse Margaret de QUNICY | F2238 Marriage 1238 Father William de FERRERS, Earl of Derby | F2077 Group Sheet Mother Agnes de MESCHINES | F2077 Group Sheet
Female
Sibyl MARSHALL
Birth Abt 1204 Pembroke, Pembroke, Wales Christening 1209 , St. David's, Pembrokeshire, Wales Death 27 Apr 1245 Burial Other Spouse Walter DUNSTANVILLE | F2240 Marriage Other Spouse Ingeram PRATELLIS | F2241 Marriage Father William MARSHALL, Earl of Pembroke | F736 Group Sheet Mother Isabel de CLARE | F736 Group Sheet
Female
Agnes de FERRERS
Birth Abt 1224 Of, , Derbyshire, England Death 11 May 1290 Burial Spouse William de VESCY | F2227 Marriage
Female
Isabella de FERRERS
Birth Abt 1226 Of, , Derbyshire, England Death 1260 Burial Spouse Gilbert BASSET | F4132 Marriage Spouse Reynold De BOHUN | F4133 Marriage
Female
Maud (Matilda) De FERRERS
Birth Abt 1228 Of, , Derbyshire, England Death 12 Mar 1298 OR 1299 Burial Spouse William "Fort" De VIVONNE | F5612 Marriage Spouse William KIME | F5621 Marriage Spouse Emeric De RUPE CANARDI | F5622 Marriage
Female
Sibyl De FERRERS
Birth 1230 Of, , Derbyshire, England Death Yes, date unknown Burial Spouse Francis BOHUN | F5679 Marriage
Female
Joan de FERRERS
Birth Abt 1232 Of, , Derbyshire, England Death Bef Oct 1267 Burial Spouse Robert AGUILLON, KNIGHT | F5680 Marriage Abt 1251 Spouse John de MOHUN | F5681 Marriage
Female
Agatha de FERRERS
Birth Abt 1234 of, Ferrars, Derbyshire, England Death 22 May 1306 Burial Spouse Hugh MORTIMER | F3485 Marriage
Female
Eleanor De FERRERS
Birth Abt 1236 Of, , Derbyshire, England Death Bef 12 Oct 1274 Burial Leeds Priory Spouse Roger de QUINCY, Earl of Winchester | F2140 Marriage Bef 5 Dec 1252 Spouse William VALLIBUS | F2555 Marriage Spouse Roger De LEYBURN | F2556 Marriage