Nielsen Hayden genealogy
Family: William de Montfitchet / Margaret fitz Gilbert (F3284)
Gilbert fitz Richard de Clare (1060-1117) 
|
Alice de Clermont ( -1137)
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Baldwin fitz Gilbert ( -1155)  |
| Alice de Clare ( -1163) |
| Rohese fitz Gilbert ( -1165) |
| Richard fitz Gilbert de Clare (1090-1136) |
| Gilbert "Strongbow" fitz Gilbert (1100-1148) |
| William de Montfitchet ( -1137)
|
| Margaret fitz Gilbert ( -1186)
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| Richard de Montfichet ( -1178) |
| Gilbert de Montfitchet (1134-1186) |