Nielsen Hayden genealogy
Descendants of (Unknown daughter of Eudon of Brittany)
Father: Eudon of Brittany (999 - 7 Jan 1079)
(Unknown daughter of Eudon of Brittany)
Enisan Musard ( - Between 1121 and 1130)
   └─ Garsenia Musard ( - Aft 1152)
    Roald fitz Harscod ( - Between 1152 and 1158)
       ├─ Theophania fitz Roald
       │ Picot de Lascelles (of Thrintoft, Yorkshire, England - Between 1167 and 1179)
       │    └─ Roger de Lascelles (Abt 1160 - Bef 16 Mar 1217) =>
       │     + Beatrice
       └─ Ismania
        Philip de Burgh (of Burrough Green, Newmarket, Cambridgeshire, England - 1164)
           └─ Thomas de Burgh (of Burrough Green, Newmarket, Cambridgeshire, England - 1199) =>
            + Sarah de Neville