AUDEBERT [I] de la Marche, son of BOSON [I] "le Vieux" Comte de la Marche & his wife Emma de Périgueux (-killed in battle Charroux 997, bur Charroux Monastery). 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"[22]. 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"[23]. The Chronicle of Adémar de Chabannes names "Aldebertus comes…Petragoricensis" as son of "Bosonis Vetuli ex sorore Bernardi…Emma"[24]. 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"[25]. "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[26]. "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[27]. 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[28]. 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[29].
m ([990]) as her first husband, ADALMODE de Limoges, daughter of GERAUD Vicomte de Limoges & his wife Rothilde de Brosse. The Chronicle of Adémar de Chabannes records that "Aldebertus frater [Helias Petragoricensi comite]" married "sorore Widonis vicecomitis"[30]. Ademar records the second marriage of "Adalmode coniuge…Aldeberti" to Duke William[31]. The Chronicle of Petrus Malleacensis records that Adalmodis was wife of Boson Comte du Périgord and daughter of "Candida", for whom Duke Guillaume promised to expand "fluvium Rhodanum Regni" in return for marrying her daughter[32], but this is inconsistent with the other sources. According to the Chronicle of Maillezais, Adalmode was the daughter of Adelais d'Anjou (presumably by her first husband Etienne de Brioude/Gévaudan), and also widow of Boson Comte du Périgord (brother of Comte Audebert I, whom he survived by several years). Thierry Stasser has shown that this is incorrect[33]. After her first husband was killed, Adalmode sought refuge in the château de Rochemeaux but was forced to surrender by Poitevin forces[34]. She married secondly ([997]) as his first wife, Guillaume V Duke of Aquitaine [Guillaume III Comte de Poitou][35].