Family: William De Ferrers, III / Sibyl Marshall (F15336)
m. Bef 14 May 1219
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Male
William De Ferrers, III
Birth 1193 Chartley Castle, Staffordshire, England 
Death 28 Mar 1254 Evington, Leicestershire, England Burial Aft 28 Mar 1254 Merevale, Warwickshire, England, United Kingdom Marriage Bef 14 May 1219 Pembroke, Pembrokeshire, Wales Father William II de Ferrers, 4th Earl of Derby | F15337 Group Sheet Mother Agnes de Meschines | F15337 Group Sheet
Female
Sibyl Marshall
Birth 1 Aug 1201 Pembroke Castle, Pembrokeshire, Wales, United Kingdom Christening 1208 Pembrokeshire, Wales, United Kingdom Death 27 Apr 1245 Pembroke, Pembrokeshire, Wales, United Kingdom Burial Apr 1245 Tintern Abbey, Tintern, Monmouthshire, Wales, United Kingdom Father William Marshall, 4th Earl of Pembroke | F15134 Group Sheet Mother Isabel De Clare, Countess of Pembroke | F15134 Group Sheet
Female
Agnes de Ferrers
Birth 1222 Tutbury, Staffordshire, England Death 11 May 1290 Scarborough, Yorkshire, England Burial Scarborough, Yorkshire, England, United Kingdom
Female
Isabella de Ferrers
Birth 1226 Derby, Derbyshire, England Death Bef 26 Nov 1260 Torquay, Torbay, Devon, England, United Kingdom Burial 26 Nov 1260 Abbey, Devon, England Spouse Reynold de Mohun | F14088 Marriage Abt 1243 England
Female
Maud De Ferrers
Birth Abt 1228 Derbyshire, England, United Kingdom Death 12 Mar 1299 Chewton, Somerset, England Burial Mar 1299
Female
Lady Sibyl de Ferrers
Birth 1230 Derbyshire, England, United Kingdom Death 5 Oct 1273 England Burial Oct 1273
Female
Joan de Ferrers, the Elder
Birth 1233 Derbyshire, England Death Oct 1267 Addington, Kent, England, United Kingdom Burial Oct 1267 Addington, London, England, United Kingdom
Female
Eleanor de Ferrers
Birth 1236 Derby, Derbyshire, England Death 2 Nov 1274 Elham, Kent, England Burial Leeds, Yorkshire, England, United Kingdom