Here's some Carolingian Empire. The Franks were a Germanic tribe that conquered the Roman province of Gaul and converted to Catholicism. The Carolingians were a dynasty tracing from Charles Martel, whose son Pepin became the first king of the dynasty. Charlemagne was Pepin's son and successor.
Pepin the Younger (c. 714 – 24 September 768), also known as Pepin the Short, was the King of the Franks from 752 until his death. He was the first of the Carolingians to become King.Succeeding his father as the Mayor of the Palace in 741, Pepin reigned over Francia jointly with his elder brother Carloman.In 741, Pepin married Bertrada of Laon. Her father, Charibert, was the son of Pepin II's brother, Martin of Laon. The first of their 8 children was Charlemagne.