• Born: Abt 877, Autun, Saone-et-Loire, Bourgogne, France
• Married: Before 898
• Died: 919, San Sisto, Piacenza, Emilia-Romagna, Italy

  Research Notes:

Her parentage and marriage are deduced from her donation to Cluny with her husband dated Jan 917, in which her brother "Ludovico" is named. The Annales Bertiniani record the betrothal in 878 of "filiam Bosonis" and "Karlomanno filio suo [=Hlodowici rex]". It is assumed that this daughter was Engelberga, who must have been an infant at the time, but no proof has been found which confirms that this is correct. "Bosonis" could refer either to the future King Boson or to Count Boson, husband of the adulterous Engiltrudis.... While Boson of Provence had refused to swear allegiance to Louis II "le Bègue" King of the West Franks ("Hlodowici rex") on the latter's accession, it is not known whether he was still in rebellion the following year. Assuming that some reconciliation had taken place, a marriage alliance between the two parties would have been a likely possibility. The other Count Boson was presumably of less political importance and, in addition, his problems with his adulterous wife may have rendered his daughters unmarriageable at the time. The Annales Bertiniani indicate that Engelberga was born from her father´s [second] marriage when they record that "Richardus frater Bosonis" took “uxorem Bosonis et filiam eius” back to “comitatum suum Augustudensem” in 882 after the capture of Vienne by the forces of King Carloman.

Engelberga is named as co-founder with her husband of the monastery of Cluny in a charter dated 11 Sep 910.

The Annales Masciacenses record in 919 the deaths of “Guilelmus famosus dux Aquitanorum...coniunx eius Ingelberga”. She died as a nun at San Sisto, Piacenza. ¹