Family: William 11 De Ros, Brn Ingmanthorpe,sir / (F1400)
m. Abt 1269
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Male
William 11 De Ros, Brn Ingmanthorpe,sir
Birth Abt 1244 Ingmanthorpe, Penistone, West Riding, Yorkshire, England 
Death Bef 28 May 1310 Ingmanthorpe,York,England Burial Church Of Grsy F, , Yorkshire, England Marriage Abt 1269 Other Spouse agatha agnes de Clare | F1399 Marriage Father William 1 De Ros, Baron Hamlake MP,LORD HELMSLEY,SIR | F1406 Group Sheet Mother Lucia [Joan] Fitzpiers, Baroness of Ingmanthorpe | F1406 Group Sheet