Nielsen Hayden genealogy
Descendants of William de Burgh
- 1205Father: Walter de Burgh (of Burgh near Aylsham, Norfolk, England - ??)
Mother: Alice ( - ?? bur.Walsingham, Norfolk, England)
William de Burgh (of Askeaton, Limerick, Ireland - 1205)
(Unknown) (m. Bef 1193)
   └─ Richard de Burgh (Abt 1193 - 1242)
    Gille de Lacy (of Dublin, Ireland - 1242)(m. Bef 21 Apr 1225)
       ├─ (Unknown) de Burgh
       │ Gerald de Prendergast (of Enniscorthy in Templeshanbo, Wexford, Ireland - Aug 1251)
       │     + Maurice fitz Maurice (Abt 1238 - Bef 2 Sep 1277)(m. Bef 28 Oct 1259)
       ├─ Margery de Burgh ( - Aft 1 Mar 1253)
       │ Thebaud le Boteler (Abt 1223 of Arklow, Wicklow, Ireland -
       │ Bef 3 Aug 1248 bur.Arklow Abbey, Wicklow, Ireland)(m. Bef 1243)
       │ Bef 3 Aug 1248 bur.Arklow Abbey, Wicklow, Ireland)(m. Bef 1243)
       │    └─ Thebaud le Boteler (Abt 1242 - 26 Sep 1285 Arklow, Wicklow, Ireland) =>
       │     + Joan fitz John ( - Between 25 Feb 1303 and 26 May 1303)(m. Bef 1269)
       └─ Walter de Burgh (Abt 1229 - 28 Jul 1271 Galway Castle, Galway, Ireland)
        Avelina fitz John ( - Abt 20 May 1274 bur.Dunmow Priory, Little Dunmow, Essex, England)(m. Abt 1257)
           │ + James Stewart (Abt 1243 - 16 Jul 1309)
           └─ Richard de Burgh (Abt 1259 - 29 Jul 1326 Monastery at Athassel-on-the-Suir, Tipperary, Ireland) =>
            + Margaret ( - 1304)(m. Bef 27 Feb 1281)