Nielsen Hayden genealogy
Family: John fitz Gilbert / Sybil de Salisbury (F6304)
Gilbert ( -1130) |
Walter of Salisbury ( -1143) 
|
Sybil de Chaworth ( -1146)
|
Hawise of Salisbury (1118-1152)  |
| Patrick of Salisbury (1119-1168) |
| John fitz Gilbert (1108-1165)
|
| William Marshal (1146-1219) |