Bernard Ato V

Bernard Aton V. Trencavel († 1158 or 1159 ) was a viscount of Nîmes and Agde out of the house Trencavel. He was the third son of the Viscount Bernard Aton IV Trencavel († 1129 ) and his wife Cecilia of Provence.

When the father's death Bernard Aton was only the Vice- county Nimes, while his two older brothers Roger I. Trencavel and Raimund I. Trencavel took the lion's share of the inheritance. After Roger died in 1150 erbenlos, Raimund I. took his possessions, which for the Vice County Agde to Bernard Aton ceded.

Was married to Bernard Aton since around 1146 Guillemette, a daughter of Mr. William VI. of Montpellier. His only son of this marriage was Bernard Aton VI. Trencavel ( † after 1214 ), who was probably born in 1159 posthumously. According to a document from this year paid homage to a vassal towards Guillemette and their unborn child, which at the same time the already made death Bernard Aton V. implied.