Nielsen Hayden genealogy
Descendants of Robert I "The Frisian"
Abt 1035 - 1093 (~ 58 years)Father: Baldwin V (Abt 1010 - 1 Sep 1067 bur.Lille, Nord, Nord-Pas-de-Calais, France)
Mother: St. Adele of France (Between 1010 and 1015 - 8 Jan 1079 bur.Abbey of Messines, Ypres, Flanders)
Robert I "The Frisian" (Abt 1035 - 3 Oct 1093)
Gertrude of Saxony (Abt 1030 - 4 Aug 1113)(m. 1063)
   ├─ Adele of Flanders (Between 1064 and 1065 - Apr 1115)
   │ St. Canute IV, King of Denmark (Abt 1043 - 10 Jul 1086)(m. Abt 1081)
   │    └─ Ingegerd of Denmark (Between 1081 and 1085 - ??)
   │     Folke (Abt 1075 - ??)
   │         +
   └─ Gertrude of Flanders (Abt 1070 - 1117)
    Henry III of Louvain ( - 1095 Tournai, Hainaut, Belgium)(m. Abt 1090)
    :   └─ Adelaide of Louvain ( - Aft 4 Nov 1158)
    :    Simon I of Lorraine (Abt 1076 - 14 Jan 1138)
    :       │ + Renaud III of Burgundy (Abt 1093 - 1148)
    :       │ + Hermann III (Abt 1090 - 16 Jan 1160)(m. Bef 1134)
    :       └─ Matthias I of Lorraine (Abt 1119 - 13 May 1176) =>
    :        + Bertha of Swabia (1123 - Aft Mar 1195)(m. Abt 1138)
    Thierri II of Lorraine ( - 1115)(m. Between 1095 and 1096)
       └─ Thierri III of Lorraine (Abt 1098 - 17 Jan 1168)
        Sibyl of Anjou (1112 - 1165)(m. 1131)
           ├─ Mathieu of Flanders (Abt 1138 - 25 Jul 1173 Driencourt, Somme, Picardy, France) =>
           │ + Marie of England (1136 - 1182 Monastery of Sainte-Austreberthe, Montreuil, France)(m. 1160)
           ├─ Marguerite of Lorraine (Between 1140 and 1145 - 12 Nov 1194) =>
           │ + Baldwin V of Flanders (1150 - 17 Dec 1195)(m. Apr 1169)
            + Mahaud of Burgundy ( - 1192)(m. Abt 1175)