Guillaume I de Provence, Comte d'Avignon

son of Rotbald I and unknown (perhaps daughter of Guillaume "le Pieux" Duke of Aquitaine & his wife Engelberga de Provence)

-http://fmg.ac/Projects/MedLands/PROVENCE.htm#RotbaldIAgeldied949
2. GUILLAUME [I] (-after Mar 965). "Eius filio Rothboldo et fratre eius Wilelmo comite" consented to the charter of "Bosoni comitis, filii Rothboldi quondam" dated Mar 965, signed by "comes Boso…comes Wilelmus…"[151]. Comte [d%C2%B4Avignon]. "Wilelmus comes" granted property "in comitatu Avenionense" to "Archimbalde filius meus clericus" by charter dated 962, signed by "Boso, comes ad vicem patris sui Wilelmi…Nevelongo vicecomite"[152]. It is not beyond doubt that "Willelmus comes" can be identified with the brother of Comte Boson but the reference to Avignon makes this likely.

m ---. The name of this couple's possible son suggests a family connection between his mother and the family of the Seigneurs de Bourbon. She is shown in Europäische Stammtafeln[153] as the daughter of Aimon de Bourbon but it is not known whether this is speculation based only on onomastics or whether it is based on a primary source which has not yet been identified. Guillaume & his wife had [two] children:

• a) [BOSON (-after 962). "Wilelmus comes" granted property "in comitatu Avenionense" to "Archimbalde filius meus clericus" by charter dated 962, signed by "Boso, comes ad vicem patris sui Wilelmi"[154].]
• b) [ARCHAMBAUD (-[989]). "Wilelmus comes" granted property "in comitatu Avenionense" to "Archimbalde filius meus clericus" by charter dated 962[155].]

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"Eius filio Rothboldo et fratre eius Wilelmo comite" consented to the charter of "Bosoni comitis, filii Rothboldi quondam" dated Mar 965, signed by "comes Boso…comes Wilelmus…"[188]. Comte [d%C2%B4Avignon]. "Wilelmus comes" granted property "in comitatu Avenionense" to "Archimbalde filius meus clericus" by charter dated 962, signed by "Boso, comes ad vicem patris sui Wilelmi…Nevelongo vicecomite"[189]. It is not beyond doubt that "Willelmus comes" can be identified with the brother of Comte Boson but the reference to Avignon makes this likely. m ---. The name of this couple's possible son suggests a family connection between his mother and the family of the Sires de Bourbon. She is shown in Europäische Stammtafeln[190] as the daughter of Aimon de Bourbon but it is not known whether this is speculation based only on onomastics or whether it is based on a primary source which has not yet been identified.