Nielsen Hayden genealogy
Descendants of Simon II de Senlis
Abt 1103 - 1153 (~ 50 years)Father: Simon I de Senlis ( - Between 1111 and 1113)
Mother: Maud of Northumberland (Abt 1072 - Between 1130 and 1131 bur.Scone, Perthshire, Scotland)
Simon II de Senlis (Abt 1103 - Aug 1153 bur.St. Andrew's, Fife, Scotland)
Isabel of Leicester ( - Aft 1190)(m. Bef 1138)
   └─ Isabel de Senlis ( - Aft 1210)
    William Mauduit (Between 1130 and 1135 of Hanslope, Buckinghamshire, England -
    2 Oct 1194 bur.Waverley Abbey, Surrey, England)
    2 Oct 1194 bur.Waverley Abbey, Surrey, England)
       └─ Robert Mauduit (Abt 1172 of Hanslope, Buckinghamshire, England - Bef 19 Jun 1222)
        Isabel Basset (of Thurleigh, Bedfordshire, England - Between 24 Oct 1225 and 11 Dec 1225)(m. Bef 1194)
           └─ William Mauduit (Bef 1194 of Hartley Mauduit, Hampshire, England - Bef 14 Feb 1257) =>
            + Alice de Beaumont (Abt 1197 of Warwick, Warwickshire, England - Between 1246 and 1263)
            (m. Bef 3 Mar 1216)
            (m. Bef 3 Mar 1216)