The Vita S. Willelmi names “Bernardo…et Gaucelino” as sons of Guillaume. "Willelmus…comes" names "filiabus meis et filiis Barnardo, Witchario, Gotcelmo, Helimbruch" (version two: "filios meos et filias Witcario, Hildehelmo et Helinbruch") in his charter dated 14 Dec 804 (version two: dated 15 Dec 804) for the foundation of the monastery of Gellone, Bernard being named in only one of the versions. Flodoard refers to "Bernardo comiti Tolosano, propinquo suo [Teodulfo comite]". Thegan's Vita Hludowici Imperatoris records that "quondam duce Bernhardo, qui erat de stirpe regali" was accused of violating "Iudith reginam" but comments that this was all lies.
Comte d'Autun until 830. Marquis de Septimanie until 831. He was installed as Count of Barcelona in 827 or before: Einhard's Annales name "Bernhardus…Barcinonæ comes" in 827. It is not certain whether this means that the "March of Spain" was at that time part of the marquisate of Septimania. It is possible that Bernard was appointed to Barcelona after the disgrace of Bero in 820, but no primary source has been identified which confirms that this is correct. Einhard's Annales name "Bernhardus…Barcinonæ comes" in 827. The Annales Fuldenses record that "Barnhardus comes Barcinonensis" was made camerarius in the palace in 829.
Emperor Louis I appointed "Bernard Duke of Septimania" as his chamberlain and entrusted his son Charles to him, but he "recklessly abused the imperial power…and undermined it entirely". He was banished to Septimania in [Apr 830] by the emperor's sons who rebelled against their father. The Annales Bertiniani record that "præfatus Bernardus" fled to Barcelona in 830. The same source records that "Werinus et Bernhardus comites" gathered a force in Burgundy and reached "Matronam fluvium" [in 834].
The Annales Bertiniani record that "Bernardus comes marcæ Hispanicæ" was sentenced to death in 844. The Annales Xantenses record that "Bernhardus comes" was killed "a Karolo" in 844, after which "filio Bernhardi" and "Pippinus rex Aquitainiæ, filius Pippini" defeated the king's army. The Annales Fuldenses record that "Karolus" killed "Bernhardum Barcenonensium ducem" in 844 "incautem et nihil ab eo suspicantem". 1