Family: William De Ros, Lord of Helmsley / Lucy Fitzpeter (F901)
m. 1225
-
Male
William De Ros, Lord of Helmsley
Birth Abt 1192 Yorkshire, England 
Death Between 1258 and 1264 Yorkshire, England Burial Yorkshire, England Marriage 1225 Yorkshire, England Father Robert De Ros | F946 Group Sheet Mother Isabella Dunkeld | F946 Group Sheet
Female
Lucy Fitzpeter
Birth 1204 Yorkshire, England Death Aft 1266 Yorkshire, England Burial Aft 29 Sep 1266 Yorkshire, England Father Piers Fitz Herbert, Lord Of Brecknock | F900 Group Sheet Mother Alice De Warkworth | F900 Group Sheet
Male
+ Robert Ros, 4th Baron Hamlake
Birth Abt 1237 Yorkshire, England Death 17 May 1285 Yorkshire, England Burial Yorkshire, England Spouse Isabel D'Aubigny | F1224 Marriage 17 May 1244 England, United Kingdom
Male
+ William De Ros of Ingmanthorp, Baron De Ros
Birth Abt 1244 Yorkshire, England Death Bef 28 May 1310 Yorkshire, England Burial 28 May 1310 Yorkshire, England Spouse Eustacia Fitzhugh | F649 Marriage Bef 1262 Yorkshire, England