William I, Viscount of Béarn

William I, called Guillem de Montcada II, was the Viscount of Béarn from 1171 to 1173 with opposition. William was the eldest son of (ca). William first appears in 1150, witnessing his father's settlement at Arles with the Baux family after Raymond Berengar IV of Barcelona's invasion of Provence. William thereafter appears regularly in the documents of his father. Setting this traditional, probably legendary account, aside, it is likely that William's eldest son Gaston VI inherited Béarn on Mary's death in 1173. William no longer had a direct hand in government after that.

William I, Viscount of Béarn

William I, called Guillem de Montcada II, was the Viscount of Béarn from 1171 to 1173 with opposition. William was the eldest son of (ca). William first appears in 1150, witnessing his father's settlement at Arles with the Baux family after Raymond Berengar IV of Barcelona's invasion of Provence. William thereafter appears regularly in the documents of his father. Setting this traditional, probably legendary account, aside, it is likely that William's eldest son Gaston VI inherited Béarn on Mary's death in 1173. William no longer had a direct hand in government after that.