Otto I Wittelsbach, Duke of Bavaria
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| PARENT (M) Otto IV, Count of Wittelsbach | |||
| Birth | |||
| Death | |||
| Marriage | to Heilika of Pettendorf-Lengenfeld | ||
| Father | Eckhard I, Count of Scheyern | ||
| Mother | Richardis of Carniola-Orlamünde | ||
| PARENT (F) Heilika of Pettendorf-Lengenfeld | |||
| Birth | |||
| Death | |||
| Marriage | to Otto IV, Count of Wittelsbach | ||
| Father | Frederick III of Pettendorf | ||
| Mother | Heilika of Swabia | ||
| CHILDREN | |||
| M | Otto I Wittelsbach, Duke of Bavaria | ||
| Birth | |||
| Death | |||
| Marriage | ABT 1169 | to Agnes of Loon | |
| F | Hedwig of Wittelsbach | ||
| Birth | |||
| Death | |||
| Marriage | to Berthold I of Istria | ||
| PARENT (M) Otto I Wittelsbach, Duke of Bavaria | |||
| Birth | |||
| Death | |||
| Marriage | ABT 1169 | to Agnes of Loon | |
| Father | Otto IV, Count of Wittelsbach | ||
| Mother | Heilika of Pettendorf-Lengenfeld | ||
| PARENT (F) Agnes of Loon | |||
| Birth | 1150 | ||
| Death | 1191 | ||
| Marriage | ABT 1169 | to Otto I Wittelsbach, Duke of Bavaria | |
| Father | Louis I, Count of Loon | ||
| Mother | Agnes of Metz | ||
| CHILDREN | |||
| F | Richardis of Bavaria | ||
| Birth | |||
| Death | |||
| Marriage | to Otto I, Count of Guelders | ||
+ Agnes of Loon b: 1150 d: 1191
3 Adelaide of Guelders b: ABT 1182 d: 1218
5 Adelaide of Holland, Countess of Hainaut b: ABT 1230
+ Edward III b: 13 NOV 1312 d: 21 JUN 1377
9 John of Gaunt, 1st Duke of Lancaster b: 6 MAR 1340 d: 3 FEB 1399
+ Blanche
10 Henry Beaufort b: ABT 1375 d: 11 APR 1447