Research Notes:

"Rotbertus…vicecomes et coniunx mea Ingeltrudis" donated property to Saint-Benoît-sur-Loire by charter dated Dec 958 subscribed by "Lanberti filii eorum, Wichardi, Ugonis, Letaldi, Waloni". The origin of Ingeltrud is unknown. Jackman suggests, for onomastic reasons only, that she may have been Ingeltrud, daughter of Eberhard Graf im Oberlahngau, Pfalzgraf [Konradiner] & his wife ---. However, this appears unlikely from a geographical perspective. In addition, no strikingly typical Konradiner names feature among this couple's descendants. Settipani suggests that Ingeltrud may have been the daughter of Eberhard's younger brother Otto. It is more likely that she was related to the comtes de Mâcon, which would explain why Letald Comte de Mâcon names her son as "Lanbertus consanguineus meus" in his charter dated 944.

http://fmg.ac/Projects/MedLands/BURGUNDIAN%20NOBILITY.htm#RobertChalonB