Nielsen Hayden genealogy
Descendants of Sybil Basset
Abt 1135 -Father: Richard Basset ( - Between 16 Sep 1144 and 29 May 1147 bur.Abingdon Abbey, Berkshire, England)
Mother: Maud Ridel (of Drayton, Staffordshire, England - ??)
Sybil Basset (Abt 1135 of Drayton Basset, Staffordshire, England - ??)
Robert de Cauz ( - Bef 1167)
   └─ Maud de Cauz ( - Bef 25 May 1224)
    Adam de Birkin (of Laxton, Nottinghamshire, England - 1185)
       └─ (Unknown) de Birkin
        Robert le Vavasour (of Addingham, Yorkshire, England - Bef 1228)
            + Theobald Walter ( - Bef 14 Feb 1205 bur.Owney Abbey, Limerick, Ireland)(m. Bef 1201)
            + Fulk III Fitzwarine (of Whittington, Oswestry, Shropshire, England - Bef 22 Nov 1235)
            (m. Bef 1 Oct 1207)
            (m. Bef 1 Oct 1207)