Nielsen Hayden genealogy
Family: John de Thornhill / Olivia de la Mare (F6294)
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Richard de Thornhill ( -1208)
|
Alice ( -1210) |
| William de la Mare ( -1203)
|
Mabel de la Mare ( -1253)  |
| John de Thornhill (1202-1249)
|
| Richard de Thornhill ( -1287) |