She is married to SirHervey de Stafford.
They got married before 1214.Sources 1, 2
Child(ren):
Pernell, daughter of William de Ferriers, 3rd Earl of Derby. [Burke's Peerage]S), 3rd EARL OF DERBY, by Sibyl, daughter of William DE BRAIOSE. He died before 12 May 1237, and was buried at Stone. He left a will. His wife survived him, and was buried at Stone. [Complete Peerage XII/1:170-1, (transcribed by Dave Utzinger)]
Petronella de Ferrers | |||||||||||||||||||||||||||||||||||
< 1214 | |||||||||||||||||||||||||||||||||||
SirHervey de Stafford |
http://trees.ancestry.com/pt/AMTCitationRedir.aspx?tid=28696621&pid=11873