Otto Andechs I Duke Merania was born to Berthold Andechs Duke Merania and Agnes Rochlitz.
Otto Andechs I Duke Merania and Beatrice Hohenstaufen Duchess Merania were married. She the daughter of Otto Hohenstaufen I Count Burgundy and Margaret Blois. He the son of Berthold Andechs Duke Merania and Agnes Rochlitz. She a great x 3 granddaughter of King William "Conqueror" I of England. 
Otto Andechs I Duke Merania succeeded I Duke Merania. Beatrice Hohenstaufen Duchess Merania by marriage Duchess Merania.
In 1234 Otto Andechs I Duke Merania died.
[his daughter] Adelaide Andechs was born to Otto Andechs I Duke Merania and Beatrice Hohenstaufen Duchess Merania.
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