Nielsen Hayden genealogy
Descendants of Robert Curthose
1050 - Abt 1134 (~ 83 years)Father: William I, King of England (1027-1028 Falais, Calvados, Normandy, France - 9 Sep 1087 St. Gervais, near Rouen, Seine-Maritime, Normandy, France)
Mother: Matilda of Flanders, Queen Consort of England (1032 - 2 Nov 1083 bur.Abbey of Sainte-Trinitie, Caen, Calvados, Normandy, France)
Robert Curthose (in or Aft 1050 - Abt 3 Feb 1134 Cardiff, Glamorgan, Wales)
Sibyl of Conversano ( - 1103)(m. Sep 1100 Italy)
   └─ William Clito (25 Oct 1102 Rouen, Seine-Maritime, Normandy, France -
    28 Jul 1128 bur.Abbey of Saint-Bertin, Saint-Omer, Pas-de-Calais, France)
    28 Jul 1128 bur.Abbey of Saint-Bertin, Saint-Omer, Pas-de-Calais, France)
    + Sibyl of Anjou (1112 - 1165)(m. 1123)
    + Joanna of Montferrat (m. 1127)