Bernard Ato IV was the Viscount of Nîmes of the Trencavel family from 1074 to his death. Bernard Ato was the son of Raymond Bernard of Nîmes and Ermengarde of Carcassonne.
In 1096, Bernard joined the army of Raymond of Saint-Gilles to fight in the... Wikipedia
Died: 1129
Parents: Ermengarde de Carcassonne
Great-grandparents: Raymond Roger of Carcassonne and Garsende of Béziers
Great grandchildren: Raymond Roger Trencavel, Constance of Toulouse, Geralda, and more
Grandchildren: Bernard Ato VI, Roger II Trencavel, Métheline de Béziers, and more
Grandparent: Peter Raymond of Carcassonne
Children: Raymond I Trencavel, Bernard Ato V, Roger I Trencavel, and more