Roger I Trencavel [SEP] father
Roger I Trencavel
Roger I Trencavel, ("Roger I of Beziers"), (died 1150) was the eldest son of Bernard Ato IV, Viscount of Albi, Agde, Béziers, Carcassonne, Nîmes, and Razès. On his father's death in 1130 he inherited Albi, Carcassonne, and Razès, while his younger brother Raymond inherited Agde and Béziers and his youngest brother Bernard Ato V inherited Nîmes. 
Beginning in Carcassonne in 1141, Roger was the first Trencavel ruler to appoint vicars to go about the
Bernard Ato V
Bernard Ato V (died 1163) was the Viscount of Nîmes of the Trencavel family from 1129 to his death.
In 1138, Bernard Ato swore an oath of fidelity to Alfonso Jordan, Count of Toulouse, along with his brothers Roger of Carcassonne and Raymond of Béziers. Nevertheless, because his father Bernard Ato I had supported William IX of Aquitaine in his attempt to take Toulouse and because his lands controlled the roads between Alfonso's Languedocian and Provençal lands, Bernard Ato and Alfonso were fundamentally at odds