b.1196 Helmsley, Yorkshire, England
d.1246 Kirkham, Yorkshire, England
b.1244 Ingmanthorpe, England
d.1310 Grey Friars, England
b.1205 Forest of Dean, England
d.1266 Yorkshire, England
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| | William De Ross b.1196 Helmsley, Yorkshire, England d.1246 Kirkham, Yorkshire, England | | | | | |
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| William de Ros b.1244 Ingmanthorpe, England d.1310 Grey Friars, England | | | | | | |
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| | Lucy FitzPiers b.1205 Forest of Dean, England d.1266 Yorkshire, England | | | | | |
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