Nielsen Hayden genealogy
Descendants of Roger de Lacy
- 1106Father: Walter de Lacy (Abt 1042 Lassy, Calvados, France - 2 Apr 1084 Hereford, Herefordshire, England)
Mother: Ermeline
Roger de Lacy ( - 1106)
   └─ Gilbert de Lacy ( - Aft 1163 The Near East)
   
       └─ Hugh de Lacy (of Meath, Ireland - 25 Jul 1185)
        Rohese de Monmouth (Between 1135 and 1140 - Abt 1180)(m. Bef 1155)
           │ + William Fitz Alan (Abt 1154 of Oswestry, Shropshire, England - 1210)(m. Abt 1175)
           │ + Margaret de Briouze (Abt 1181 - Aft 25 Jun 1245)(m. Bef 19 Nov 1200)
           └─ Hugh de Lacy (Abt 1176 -
            Bef 26 Dec 1242 bur.Convent of the Franciscan Friars, Carrickfergus, Antrim, Ireland)
            Bef 26 Dec 1242 bur.Convent of the Franciscan Friars, Carrickfergus, Antrim, Ireland)
            + Emeline de Ridelisford (of Bray, Berkshire, England - Between 18 May 1275 and 19 Jul 1276)
            + Lesceline de Verdun (m. Abt 1195)