Nielsen Hayden genealogy
Descendants of Ismania
Father: Roald fitz Harscod ( - Between 1152 and 1158)
Mother: Garsenia Musard ( - Aft 1152)
Ismania
Philip de Burgh (of Burrough Green, Newmarket, Cambridgeshire, England - 1164)
   └─ Thomas de Burgh (of Burrough Green, Newmarket, Cambridgeshire, England - 1199)
    Sarah de Neville
       └─ Philip de Burgh (of Burrough Green, Newmarket, Cambridgeshire, England -
        1235 bur.Easby Abbey, Richmond, Yorkshire, England)
        1235 bur.Easby Abbey, Richmond, Yorkshire, England)
        Maud de Morville
           └─ Thomas de Burgh (of Burrough Green, Newmarket, Cambridgeshire, England - 1284) =>
            +