Nielsen Hayden genealogy
Ancestors of Heinrich I of Brandenburg
Abt 1260 - 1318 (~ 58 years) ┌── Otto von Ballenstedt (Abt 1075 - 9 Feb 1123) =>
┌── Albrecht of Saxony (1100 - 18 Nov 1170)(m. Abt 1125)
│ └── Eilica von Sachsen (Abt 1080 - 16 Jan 1142) =>
│
┌── Otto I of Brandenburg (Abt 21 Jun 1126 - 7 Mar 1184)
│ │
│ └── Sophia von Winzenburg ( - 8 Jun 1160)(m. Abt 1125)
│ └── Hedwig von Krain und Istrien ( - 1 Dec 1162) =>
│
┌── Albrecht II of Brandenburg (Abt 1177 - 25 Feb 1220)(m. Aug 1205)
│ └── Adelheid
│
┌── Johann I of Brandenburg (1213 - 4 Apr 1266)(m. 7 May 1255)
│ │
│ │ ┌── Konrad I of Meissen (1096 - 5 Feb 1157)(m. Bef 1119) =>
│ │ ┌── Dedo V von Nieder-Lausitz (Abt 1130 - 16 Aug 1190)
│ │ │ └── Liutgart von Ravenstein ( - 19 Jun 1145)(m. Bef 1119) =>
│ │ │
│ │ ┌── Konrad von Nieder-Lausitz (Abt 1156 - 6 May 1210)(m. Aft 29 Jan 1180)
│ │ │ │
│ │ │ │ ┌── Goswin II of Heinsberg ( - 1170) =>
│ │ │ └── Matilde von Heinsberg ( - 20 Jan 1189)
│ │ │ └── Adelheid von Sommerschenburg ( - Abt 1180) =>
│ │ │
│ └── Mathilde von Nieder-Lausitz ( - 1255)(m. Aug 1205)
│ │
│ │ ┌── Boleslaw III "Wrymouth", King of Poland (20 Aug 1085 - 28 Oct 1138)(m. 1115) =>
│ │ ┌── Mieszko III, High Duke of Poland (Abt 1126 - 13 Mar 1202)
│ │ │ └── Salome von Berg-Schelklingen (Bef 1101 - 27 Jul 1144)(m. 1115) =>
│ │ │
│ └── Elisabeth of Poland ( - 2 Apr 1209)(m. Aft 29 Jan 1180)
│ │
│ │ ┌── Béla II "the Blind", King of Hungary (1108 - 13 Feb 1141)(m. 28 Apr 1127) =>
│ └── Elisabeth of Hungary (Abt 1128 - Bef 1155)
│ └── Jelena of Serbia (Aft 1109 - Aft 1146)(m. 28 Apr 1127) =>
│
Heinrich I of Brandenburg (Abt 1260 - 14 Feb 1318 bur.Chorin Cloister, Chorin, Brandenburg, Germany)
│
│ ┌── Otto von Ballenstedt (Abt 1075 - 9 Feb 1123) =>
│ ┌── Albrecht of Saxony (1100 - 18 Nov 1170)(m. Abt 1125)
│ │ └── Eilica von Sachsen (Abt 1080 - 16 Jan 1142) =>
│ │
│ ┌── Bernhard III of Saxony (1140 - 9 Feb 1212)
│ │ │
│ │ └── Sophia von Winzenburg ( - 8 Jun 1160)(m. Abt 1125)
│ │ └── Hedwig von Krain und Istrien ( - 1 Dec 1162) =>
│ │
│ ┌── Albrecht I of Saxony (Abt 1180 - 8 Nov 1261)
│ │ │
│ │ │ ┌── Boleslaw III "Wrymouth", King of Poland (20 Aug 1085 - 28 Oct 1138)(m. 1115) =>
│ │ │ ┌── Mieszko III, High Duke of Poland (Abt 1126 - 13 Mar 1202)
│ │ │ │ └── Salome von Berg-Schelklingen (Bef 1101 - 27 Jul 1144)(m. 1115) =>
│ │ │ │
│ │ └── Judith of Poland (Abt 1152 - Aft 1201)
│ │ │
│ │ │ ┌── Béla II "the Blind", King of Hungary (1108 - 13 Feb 1141)(m. 28 Apr 1127) =>
│ │ └── Elisabeth of Hungary (Abt 1128 - Bef 1155)
│ │ └── Jelena of Serbia (Aft 1109 - Aft 1146)(m. 28 Apr 1127) =>
│ │
└── Jutta of Saxony ( - 23 Dec 1287)(m. 7 May 1255)
│
│ ┌── Ludwig I of Thuringia (Abt 1090 - 12 Jan 1140) =>
│ ┌── Ludwig II of Thuringia (Abt 1128 - 14 Oct 1172)
│ │ └── Hedwig von Gudensberg ( - 1148) =>
│ │
│ ┌── Hermann I of Thuringia (Abt 1154 - 25 Apr 1217)
│ │ │
│ │ │ ┌── Frederick II von Hohenstaufen (1090 - 4 Apr 1147)(m. Between 1131 and 1135) =>
│ │ └── Jutta of Swabia (Abt 1133 - 7 Jul 1191)
│ │ └── Agnes von Saarbrücken (m. Between 1131 and 1135) =>
│ │
└── Agnes von Thüringen (Abt 1206 - Bef 1247)
│
│ ┌── Otto II of Bavaria (Between 1083 and 1084 - 4 Mar 1156) =>
│ ┌── Otto I of Bavaria (Abt 1117 - 11 Jul 1183)
│ │ └── Heilika von Lengenfeld ( - 14 Sep 1170) =>
│ │
└── Sophie of Bavaria (Abt 1172 - 15 Jul 1238)
│
│ ┌── Ludwig I of Looz ( - 11 Aug 1171) =>
└── Agnes von Looz (Abt 1150 - 1192)
└── Agnes von Metz =>