Bernard Ato VI

Bernard Aton VI. Trencavel (* 1159, † after 1214 ) was a viscount of Nîmes and Agde out of the house Trencavel. He was the only son of the Viscount Bernard Aton V. Trencavel († 1058/59 ) and his wife Guillemette de Montpellier.

Bernard Aton was born most likely posthumous and his mother led up to its responsibility the management of his estate, in which he could no longer exercise absolute. In Agde he had to share with the bishop of the city's rule. This was awarded in 1173 by King Louis VII of France granted extensive privileges and control over a third of the vice county. In 1187, Bernard Aton entrusted his possessions to the bishop in Agde, so this de facto the only Lord in this viscounty was. From the 1208 outbreak of the Albigensian Crusade, Bernard Aton held out and did not support his cousin Raymond Roger Trencavel in the defense of Carcassonne 1209. On May 2, 1214 he transferred the Vice counties Nîmes and Agde to the leader of the crusade, Simon de Montfort.

Bernard Aton VI. was not married, his date of death is unknown.