Charibert of Laon
Charibert (also spelled Caribert and Heribert), Count of Laon, was the maternal grandfather of Charlemagne. He was the father of Charles's mother, Bertrada of Laon. Only his mother is known from contemporary records. In 721, Charibert signed, with his mother Bertrada of Prüm the foundation act of the Abbey of Prüm. The same year, also with his mother, he made a donation to the Abbey of Echternach. By 744, his daughter Bertrada of Laon had married Pippin the Younger, mayor of the palace of Neustria and Burgundy and later king of the Franks. He died before 762, as stated in an act of his daughter and son-in-law.
- Cawley, Charles (7 February 2011), Franks, Merovingian nobility Pepin [II]"le Gros" or "d'Herstal", Medieval Lands database, Foundation for Medieval Genealogy,
Medieval Lands Project on the son of Bertrada of Prüm]