• Married: Bef 1016
• Died: 29 May 1026

  Research Notes:

"Otto comes et uxor mea Adila" donated property to Saint-Vincent de Mâcon by two charters dated to 1015 or before (during the reign of Robert I King of France) both subscribed by "Rainaldi filii sui". "Otto comes et uxor mea Adeleidis et filius meus Rainaldus atque Otto nepos meus" donated property to Cluny by charter dated to [1015]. "Otto comes qui nominatur Willelmus" issued a charter dated 2 Nov 1023 subscribed by "Raynardi comitis, Adheleydis uxoris eius".

Most secondary source genealogies assume that she was Adelais [Blanche] d'Anjou, widow firstly of Etienne de Brioude, widow secondly of Raymond Comte de Toulouse, divorced wife thirdly of Louis V King of the Franks, widow fourthly of Guillaume [II] Comte de Provence, daughter of Foulques II "le Bon" Comte d’Anjou & his first wife Gerberge ---. Adelais's supposed fifth marriage is deduced from the following: Count Othon-Guillaume's wife is named Adelais in several charters, and Pope Benedict VIII refers to "domnæ Adeleidi comitissæ cognomento Blanchæ" with "nuruique eius domnæ Gerbergæ comitissæ" when addressing her supposed husband, Gerberga presumably being Count Othon-Guillaume's daughter by his first wife who was the widow of Adelaide-Blanche d’Anjou's son by her fourth husband. However, the document in question appears not to specify that "domnæ Adeleidi…" was the wife of Othon Guillaume and the extracts seen (the full text has not yet been consulted) do not permit this conclusion to be drawn. It is perfectly possible that Adelais-Blanche was named in the letter only in reference to her relationship to Othon Guillaume’s daughter. If her fifth marriage is correct, Adelais would have been considerably older than her new husband, and probably nearly sixty years old when she married (Othon-Guillaume's first wife died in [1002/04]), which seems unlikely. Another difficulty is presented by three entries dated 1018, 1024 and 1026 which appear to link Adelais to Provence while, if the fifth marriage was correct, she would have been with her husband (whose death is recorded in Sep 1026) in Mâcon. These entries are: firstly, "Adalax comitissa mater Villelmi quondam Provintie comitis et Geriberga eque comitissa…eiusdem principis olim uxor" donated property to Saint-Victor de Marseille for the soul of their late son and husband respectively by charter dated 1018; secondly, "Vuilelmus filius Rodbaldi" donated property "in comitatu Aquense in valle…Cagnanam" to Marseille Saint-Victor by charter dated 1024, signed by "Adalaiz comitissa, Vuilelmus comes filius Rodbaldi"; and thirdly, a manuscript written by Arnoux, monk at Saint-André-lès-Avignon, records the death in 1026 of "Adalax comitissa".

The necrology of Saint-Pierre de Mâcon records the death "IV Kal Jun" of "Adalasia comitissa vocata regali progenie orta". ¹