William I, Viscount of Béarn Viscount of Béarn from 1171 to 1173 (1200–1172) Parents William Ramon of Montcada Beatriu de Montcada Children William Raymond, Viscount of Béarn Gaston VI, Viscount of Béarn Siblings Adelaida de Montcada Ramon I de Montcada i de Montcada Partners Mary, Viscount of Béarn