Husband/father: William de Lancaster
Wife/mother: Gundred de Warenne
Note: William's second marriage
Source: Complete Peerage, The
Marital or other families:
Sex: Male
Property: Kendal
Source: Complete Peerage, The
Parental family: William de Warenne and Isabel
Marital or other families:
Sex: Female
Note: Elder daughter of William
Source: Complete Peerage, The
Parental family: Roger and Gundred de Warenne
Marital or other families:
Title: Earl of Warwick
Sex: Male
Note: First son and heir of Roger
Death:
Source: Complete Peerage, The
Husband/father: William
Wife/mother: Maud de Percy
Marriage:
Source: Complete Peerage, The
Parental family: William de Percy and Alice de Tonbridge
Marital or other families:
Sex: Female
Note: First daughter and coheir of William
Death:
Source: Complete Peerage, The
Husband/father: William de Percy
Wife/mother: Alice de Tonbridge
Children:
Note: William's first marriage
Source: Complete Peerage, The