Nielsen Hayden genealogy
Descendants of (Unknown) de Lacy
Father: Hugh de Lacy (of Meath, Ireland - 25 Jul 1185)
Mother: Rohese de Monmouth (Between 1135 and 1140 - Abt 1180)
(Unknown) de Lacy
William Fitz Alan (Abt 1154 of Oswestry, Shropshire, England - 1210)(m. Abt 1175)
   └─ John Fitz Alan (of Clun, Shropshire, England - Bef 15 Mar 1240)
    Isabel d'Aubigny ( - Bef 1240)(m. Bef 1223)
       └─ John Fitz Alan (Abt 1223 of Clun, Shropshire, England - Bef 10 Nov 1267)
        Maud de Verdun ( - 27 Nov 1283)(m. Bef 1240)
           └─ John Fitz Alan (14 Sep 1246 of Arundel, Sussex, England -
            18 Mar 1272 bur.Haughmond Abbey, Shropshire, England) =>
            18 Mar 1272 bur.Haughmond Abbey, Shropshire, England) =>
            + Isabella de Mortimer ( - Bef 1 Apr 1292 bur.Haughmond Abbey, Shropshire, England)
            (m. Bef 14 May 1260)
            (m. Bef 14 May 1260)