Nielsen Hayden genealogy
Descendants of Walter Percival
Abt 1327 - 1348 (~ 21 years)Father: John Percival ( - Between 1339 and 1340)
Mother: Millicent de Sancto Mauro ( - Between 18 Apr 1339 and 24 Apr 1339)
Walter Percival (Abt 1327 - 1348)
   └─ Ralph Percival (Abt 1346 - Between 1401 and 1402)
    Elizabeth de Wyke ( - Aft 1402)
       └─ Richard Percival ( - Aft 1433)
        Agnes Arthur
           └─ Ralph Percival (of Weston-in-Gordano, Somerset, England - 9 Apr 1477) =>
            + Joan de Bosco