Bertrada of Cologne the maternal grandmother of Charlemagne

Charlemagne

Charlemagne was King of the Franks from 768 and Emperor of the Romans from 800 to his death in 814. He expanded the Frankish kingdom into an empire that incorporated much of Western and Central Europe. During his reign, he conquered Italy and was crowned by Pope Leo III on 25 December 800...

, was the Countess of Laon

Laon

Laon is the capital city of the Aisne department in Picardy in northern France.-History:The hilly district of Laon, which rises a hundred metres above the otherwise flat Picardy plain, has always held strategic importance...

, married to Caribert

Caribert of Laon

Caribert , 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, Caribert signed, with his mother Bertrada of Prüm , the foundation act of the Abbey of Prüm...

, Count of Laon. Their daughter Bertrada of Laon

Bertrada of Laon

Bertrada of Laon, also called Bertha Broadfoot , was a Frankish queen.- Biography :...

 married Pepin the Short, mayor of the palace of Neustria and Burgundy and later the king of the Franks. Charles, the eldest son of their daughter and Pepin the Short, would later be known as Charlemagne.