Nielsen Hayden genealogy
Descendants of Baldwin IV "The Bearded"
980 - 1035 (55 years)Father: Arnulf II "The Young" ( - 30 Mar 987 bur.Abbey of Saint-Pierre, Ghent, Flanders)
Mother: Rozala of Italy, Queen Consort of France (Between 945 and 955 - 13 Dec 1003 bur.Abbey of Saint-Pierre, Ghent, Flanders)
Baldwin IV "The Bearded" (980 - 29 May 1035 bur.Abbey of Saint-Pierre, Ghent, Flanders)
Otgiva of Luxembourg (Abt 995 - 21 Feb 1030)(m. Abt 1005)
:   └─ Baldwin V (Abt 1010 - 1 Sep 1067 bur.Lille, Nord, Nord-Pas-de-Calais, France)
:    St. Adele of France (Between 1010 and 1015 - 8 Jan 1079 bur.Abbey of Messines, Ypres, Flanders)
:    (m. 1028 Paris, France)
:    (m. 1028 Paris, France)
:       ├─ Baldwin VI (Abt 1030 - 10 Jul 1070 bur.Abbey of Hasnon, Nord-Pas-de-Calais, France)
:       │ Richilde of Hainaut (Between 1015 and 1020 - 15 Mar 1086 bur.Abbey of Hasnon, Nord-Pas-de-Calais, France)
:       │ (m. Abt 1055)
:       │ (m. Abt 1055)
:       │     + Ida of Louvain (of Louvain, Brabant, Belgium - 1139)(m. 1084)
:       ├─ Matilda of Flanders, Queen Consort of England (1032 - 2 Nov 1083 bur.Abbey of Sainte-Trinitie, Caen,
:       │ Calvados, Normandy, France)
:       │ Calvados, Normandy, France)
:       │ William I, King of England (1027-1028 Falais, Calvados, Normandy, France -
:       │ 9 Sep 1087 St. Gervais, near Rouen, Seine-Maritime, Normandy, France)(m. Abt 1050)
:       │ 9 Sep 1087 St. Gervais, near Rouen, Seine-Maritime, Normandy, France)(m. Abt 1050)
:       │    ├─ Alice ( - Bef 1113 Abbey of St. Leger, Preaux, Normandy, France)
:       │    ├─ Cecily ( - 30 Jul 1126)
:       │    ├─ Matilda
:       │    ├─ Robert Curthose (in or Aft 1050 - Abt 3 Feb 1134 Cardiff, Glamorgan, Wales) =>
:       │    │ + Sibyl of Conversano ( - 1103)(m. Sep 1100 Italy)
:       │    ├─ Richard (Abt 1055 - 1069-1075 New Forest, Hampshire, England)
:       │    ├─ William II "Rufus", King of England (Abt 1060 - 2 Aug 1100 The New Forest, England)
:       │    ├─ Constance (1061 - 13 Aug 1090 bur.St. Melans, Rhedon, Brittany, France)
:       │    │ + Alain Fergant (Abt 1066 - 13 Oct 1119)(m. 1086)
:       │    ├─ Adela of Normandy (Abt 1061 - 8 Mar 1137 Convent of Marcigny-sur-Loire, France) =>
:       │    │ + Etienne Henri (1046 - 19 May 1102 Ramallah, Palestine)
:       │    │ (m. 1080 Chartres, Eure-et-Loir, Beauce, Centre, France)
:       │    │ (m. 1080 Chartres, Eure-et-Loir, Beauce, Centre, France)
:       │    └─ Henry I, King of England (1068 - 1 Dec 1135 Lyon-la-Forêt, near Rouen, Seine-Maritime, Normandy,
:       │     France) =>
:       │     France) =>
:       │     + (Unknown mistress or mistresses of Henry I)
:       │     + Nest ferch Rhys (Abt 1085 - Bef 1136)
:       │     + Sybil Corbet ( - Aft 1157)
:       │     + Edith Forne ( - 1152)
:       │     + Matilda of Scotland, Queen Consort of England (1079 - 1 May 1118 Westminster, Middlesex, England)
:       │     : (m. 11 Nov 1100)
:       │     : (m. 11 Nov 1100)
:       │     + Alice of Louvain, Queen Consort of England (Abt 1103 -
:       │     25 Mar 1151 Afflighem Abbey, Brabant, Belgium)(m. 29 Jan 1121 Windsor, Berkshire, England)
:       │     25 Mar 1151 Afflighem Abbey, Brabant, Belgium)(m. 29 Jan 1121 Windsor, Berkshire, England)
:       └─ 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)
:            + Henry III of Louvain ( - 1095 Tournai, Hainaut, Belgium)(m. Abt 1090)
:            + Thierri II of Lorraine ( - 1115)(m. Between 1095 and 1096)
(Unknown daughter of Richard II, Duke of Normandy) (m. Aft Feb 1030)
   └─ Judith of Flanders (Abt 1033 - 5 Mar 1094 Weingarten Abbey, Ravensburg, Upper Swabia, Germany)
    + Tostig Godwinson ( - 25 Sep 1066)(m. Bef Sep 1051)
    Welf I of Bavaria ( - 6 Nov 1101 Paphos, Cyprus)(m. 1071)
       └─ Henry IX of Bavaria (1074 - 13 Dec 1126 Ravensburg, Upper Swabia, Germany)
        Wulfhilde of Saxony (Abt 1075 - 29 Dec 1126 Weingarten Abbey, Ravensburg, Upper Swabia, Germany)
        (m. Abt 1100)
        (m. Abt 1100)
           │ + Gebhard III of Sulzbach (Abt 1114 - 28 Oct 1188)(m. 1129)
           │ + Rudolf von Bregenz ( - Between 27 Apr 1160 and 28 Apr 1160)
           │ + Gertrud von Süpplinburg (18 Apr 1115 - Abt 18 Apr 1143)(m. 29 May 1127)
           └─ Judith of Bavaria (19 May 1100 - Aft 22 Feb 1130 bur.Waldburg, Heiligen Forst, Alsace) =>
            + Frederick II von Hohenstaufen (1090 - 4 Apr 1147)(m. 1121)