Bertrada of Prüm

Bertrada castle in Mürlenbach, named after Bertrada of Prüm

Bertrada (b. ca. 670; d. after 721), also called Berthe or Bertree, and perhaps a Merovingian princess, is known to be the mother of Caribert of Laon, with whom she is co-founder and benefactor of the Prüm Abbey. They founded the abbey in 721.

Through Charibert's daughter Bertrada of Laon, wife of Pippin the Younger, Bertrada is the great-grandmother of Charlemagne. Her husband is unknown for certain.

Two alternative solutions to the question of her parentage have been suggested:

• She was daughter of the seneschal and Pfalzgraf Hugobert and Irmina of Oeren.
• She was daughter of Theuderic III, king of Neustria and Austrasia, and Clotilda of Heristal.

References

• Maurice Chaume, "Études carolingiennes I: La famille de saint Guillaume de Gellone", in _Annales de Bourgogne_, vol. I (1929), 27-56 who presents the hypothesis that she was daughter of Theuderic (Thierry).