The Chronicle of Saint-Maxence names "Audeberti comitis Marchiæ…filius Bernardi, qui fuit Audeberti, qui fuit Bosonis, qui Sulpicii, qui fuit Godfredi primi comitis de Karrofo". The Chronicle of Adémar de Chabannes names "Bosonis vetuli de Marca" as father of "Helias Petragoricensi comite", specifying that he and "fratre suo Aldeberto" were captured by Guy Vicomte de Limoges and imprisoned "in castro Montiniaco" and that Audebert was held for a long time "in turre civitatis Lemovicæ". The Chronicle of Adémar de Chabannes names "Aldebertus comes…Petragoricensis" as son of "Bosonis Vetuli ex sorore Bernardi…Emma".
He succeeded his father [before 974] as Comte de la Marche. He succeeded [after 975] as Comte de Périgord, inherited from his mother's family. The Miracula Sancti Bernardi names "Hildebertus…Bosonis filius", stating that he inherited "ex materni avi successione comitatum Petragoricæ urbis". "Guilelmi comitis, Aldeberti comitis, Guidoni vicecomitis, Ecfridi vicecomitis, Geraldi vicecomitis, Bosoni fratris vicecomitis…" subscribed the charter dated 20 Apr 991 under which "Guilelmus…dux Aquitaniensium" granted rights to the abbey of Nouaillé. "Hildeberti comitis…" subscribed the charter dated Dec 992 under which "Willelmus Aquitanorum comes et dux et uxor mea Hemma et filius noster equivocus Willelmus" donated property to Saint-Maixent. He invaded the county of Poitou with the intention of dispossessing Guillaume II Comte de Poitou, captured Gençais and threatened Charroux. He died from an arrow wound received at Gençais, from where he was carried to Charroux. The Chronicle of Adémar de Chabannes records that "Aldebertus comes…Petragoricensis" captured "Gentiaco…castro" but died from an arrow wound at "sancto Carrofo" where he was taken. 1