Nielsen Hayden genealogy
Descendants of William I Bertram
- Aft 1135Father: Richard Bertram (of Mitford Castle, Morpeth, Northumberland, England - ??)
Mother: Sigel de Mitford
William I Bertram (of Mitford, Morpeth, Northumberland, England - Aft 26 Dec 1135)
   ├─ Richard I Bertram (of Bothal Demesne, Morpeth, Northumberland, England - 1177)
   │ Menebell Gisulph ( - Aft 1176)
   │    ├─ Aline Bertram ( - Aft 1198)
   │    │ Hugh de Morwick (of West Chevington, Northumberland, England - Aft 1186)(m. Between 1170 and 1187)
   │    │    └─ Hugh de Morwick (of Chevington, Northumberland, England - 1237) =>
   │    │     + Sybil de Umfreville (of Prudhoe, Hexham, Northumberland, England - Aft 1242)
   │    └─ Robert Bertram (Aft 1157 of Bothal Demesne, Morpeth, Northumberland, England - 1203)
   │     Mabel de Clere ( - Aft 1229)
   │        └─ Richard Bertram (Aft 1182 of Bothal Demesne, Morpeth, Northumberland, England -
   │         Between 1238 and 1239) =>
   │         Between 1238 and 1239) =>
   │         + Sarah ( - Between 28 Oct 1262 and 27 Oct 1263)
   └─ Roger Bertram (of Mitford, Morpeth, Northumberland, England - Bef 29 Sep 1177)
    Ada de Morville
       └─ William Bertram (of Mitford, Morpeth, Northumberland, England - Abt 1199)
        Alice de Umfreville (m. 1185)
           └─ Roger Bertram (Abt 1194 of Mitford, Morpeth, Northumberland, England - 1242) =>
            + Agnes ( - Aft 7 May 1256)