Nielsen Hayden genealogy
Descendants of Otto I of Bavaria
Abt 1117 - 1183 (~ 66 years)Father: Otto II of Bavaria (Between 1083 and 1084 - 4 Mar 1156)
Mother: Heilika von Lengenfeld ( - 14 Sep 1170)
Otto I of Bavaria (Abt 1117 - 11 Jul 1183)
Agnes von Looz (Abt 1150 - 1192)
   ├─ Sophie of Bavaria (Abt 1172 - 15 Jul 1238)
   │ Hermann I of Thuringia (Abt 1154 - 25 Apr 1217)
   │    ├─ Irmgard von Thüringen (Abt 1197 - Abt 1244)
   │    │ Heinrich I von Anhalt (Abt 1170 - Between 1251 and 1252)(m. Abt 1211)
   │    │    │ + Boleslaw II of Silesia (Between 1220 and 1225 - Abt 26 Dec 1278)
   │    │    │ (m. Between 8 May 1242 and 18 Oct 1242)
   │    │    │ (m. Between 8 May 1242 and 18 Oct 1242)
   │    │    │ + Nikolaus I of Werle (Abt 1213 - 10 May 1277)(m. Oct 1231)
   │    │    ├─ Bernhard I of Anhalt (Abt 1220 - Between 1286 and 1287) =>
   │    │    │ + Sophie Abelsdatter of Denmark & S¢nderjylland (Abt 1240 - Aft 1284)
   │    │    └─ Siegfried I of Anhalt (Abt 1230 - Aft 25 Mar 1298) =>
   │    │     + Katarina of Sweden (1245 - ??)(m. Bef 17 Oct 1259)
   │    ├─ Ludwig II (28 Oct 1200 - 11 Sep 1227 Otranto, Apulia, Italy)
   │    │ St. Elisabeth of Hungary (1207 - 19 Nov 1231)(m. 1220 Wartburg, Eisenach, Thuringia, Germany)
   │    │    └─ Sophia von Thüringen (20 Mar 1224 - 29 May 1275) =>
   │    │     + Henri II of Brabant (1207 - 1 Feb 1248)(m. 1240)
   │    └─ Agnes von Thüringen (Abt 1206 - Bef 1247)
   │     Albrecht I of Saxony (Abt 1180 - 8 Nov 1261)
   │     :    + Johann I of Brandenburg (1213 - 4 Apr 1266)(m. 7 May 1255)
   │     Heinrich of Austria (1208 - 3 Jan 1228)(m. 29 Nov 1225)
   │         + Hermann VI von Baden ( - 4 Oct 1250)(m. 1248)
   ├─ Agnes von Wittelsbach (Abt 1172 - Abt 1200)
   │ Heinrich von Plain und Hardegg ( - Abt 30 Oct 1196)(m. Bef 1177)
   │    └─ Konrad I von Plain und Hardegg ( - Abt 4 Apr 1250)
   │     Berta ( - 1247)
   │         + Heinrich von Pfannberg ( - Abt 24 Jul 1282)
   ├─ Richardis von Scheyern-Wittelsbach (Abt 1173 - 7 Dec 1231)
   │ Otto I van Gelre (Abt 1150 - Aft 30 Apr 1207)
   │    ├─ Irmgarde van Gelre ( - Aft 1230)
   │    │ Adolf I von der Mark (Abt 1194 -
   │    │ 28 Jun 1249 bur.Abbey of Cappenberg, Selm, North Rhine-Westphalia, Germany)
   │    │ 28 Jun 1249 bur.Abbey of Cappenberg, Selm, North Rhine-Westphalia, Germany)
   │    │    └─ Engelbert I von der Mark (Abt 1215 - 16 Nov 1277 Bredevoort, Gelderland, Netherlands) =>
   │    │     + Kunigunde von Blieskastel ( - Bef 1265)(m. Bef 1 May 1251)
   │    │     + Elisabeth van Valkenburg ( - Aft 1277)(m. 1265)
   │    ├─ Mechteld van Gelre ( - Aft 1247)
   │    │ Heinrich II of Nassau (Abt 1180 - Bef 25 Jan 1251)(m. Bef 1221)
   │    │     + Adelheid von Katzenelnbogen ( - 22 Feb 1288 Mainz, Hessen, Germany)(m. Abt 1250)
   │    ├─ Gerhard van Gelre (Abt 1185 - 22 Aug 1229)
   │    │ Margareta of Brabant (Abt 1192 - 5 May 1231)(m. Abt 1206)
   │    │    ├─ Richardis van Gelre ( - Between 1293 and 1298) =>
   │    │    │ + Wilhelm IV (1210 - 16 Mar 1278 Aachen, Westphalia, Germany)(m. Bef 10 Jan 1250)
   │    │    │ + Wilhelm IV (1210 - 16 Mar 1278 Aachen, Westphalia, Germany)(m. 12 Mar 1237)
   │    │     + Philippa de Dammartin ( - Between 14 Apr 1277 and 1281)(m. 1253)
   │    └─ Aleida van Gelre (Abt 1187 - 4 Feb 1218)
   │     Willem I of Holland (Abt 1170 - 4 Feb 1222)
   │        └─ Floris IV of Holland (24 Jun 1210 - 19 Jul 1234) =>
   │         + Machteld of Brabant (Abt 1200 - 21 Dec 1267)(m. Aft 5 Nov 1214)
   └─ Ludwig I of Bavaria (Kelheim, Bavaria, Germany;23 Dec 1174 - 15 Sep 1231)
    Ludmilla of Bohemia (1170 - 5 Aug 1240 Landshut, Bavaria, Germany)(m. Oct 1204 Kelheim, Bavaria, Germany)
       └─ Otto II of Bavaria (7 Apr 1206 Kelheim, Bavaria, Germany - 29 Nov 1253 Landshut, Bavaria, Germany)
        Agnes (Abt 1201 - 16 Aug 1267 Munich, Bavaria, Germany)
           │ + Meinhard V-IV-II von Tirol (Abt 1238 - 1 Nov 1295)(m. 6 Oct 1259)
           └─ Ludwig II of Bavaria (Heidelberg, Baden-Württemberg, Germany;13 Apr 1229 - 1 Feb 1294) =>
            + Mathilde von Habsburg (Abt 1253 Rheinfelden, Aargau, Switzerland -
            23 Dec 1304 Munich, Bavaria, Germany)(m. Oct 1273 Aachen, Westphalia, Germany)
            23 Dec 1304 Munich, Bavaria, Germany)(m. Oct 1273 Aachen, Westphalia, Germany)