Cook Family Ancestry Sibyl Marshal [4904] This title is just so we know which tree we are working in, as there are many families represented here.

John Fitzgilbert Marshal The Marshal [5348]
(Abt 1105-1165)

Sibyl FitzWalter de Salisbury [5349]

Richard Strongbow Fitzgilbert de Clare 2nd Earl Pembroke [4906]
(Abt 1130-1176)

Aoife (Red) Eva (Irish: Aoife Rua) of Leinster MacMurrough Countess Ireland [4908]
(1145-1188)

William Marshal 1st /4th Earl of Pembroke [4895]
(1146-1219)

Isabel de Clare Countess Strigoil [4896]
(Abt 1174-1220)

Sibyl Marshal [4904]

Family Links

Spouses/Children:
William de Ferrers 5th Earl of Derby [10650]

Sibyl Marshal [4904] ²⁴

Marriage: William de Ferrers 5th Earl of Derby [10650] before 14 May 1219 in Pembroke, Pembrokeshire, Wales ²⁵

bullet General Notes:

http://www.hull.ac.uk/php/cssbct/cgi-bin/gedlkup.php/n=royal?royal06131
The Complete Peerage vol.IV,p.199.

Sibyl married William de Ferrers 5th Earl of Derby [10650] [MRIN: 4722], son of William de Ferrers 4th Earl of Derby [4314] and Agnes de Keveliock Lady of Chartley [11785], before 14 May 1219 in Pembroke, Pembrokeshire, Wales.²⁵ (William de Ferrers 5th Earl of Derby [10650] was born about 1193 in Derby, Derbyshire, England, died on 24 Mar 1254 in Evington, Leicestershire, England and was buried on 31 Mar 1254 in Merevale Abbey, Merevale, Warwickshire, England.)

Sibyl Marshal [4904] 24

Sibyl Marshal [4904] ²⁴