Descendancy for Mary: NH genealogy

Nielsen Hayden genealogy

- Aft 1235

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1 Mary ^[1] d. Aft 1235
- William de Duston d. Bef 31 Aug 1231
  - 2 Isabel de Duston ^[1.1] d. Between 1304 and 1305
    - Walter de Grey d. 1267
      - 3 Robert de Grey ^[1.1.1] d. Bef 27 May 1295
        
        Joan de Valoines d. Bef 12 Nov 1312
        
        4 Thomas de Grey ^[1.1.1.1] d. Bef 27 May 1295 [ =>]
        
        4 John de Grey ^[1.1.1.2] b. Abt 1272 d. 17 Oct 1311 [ =>]