Tilpin (or Tulpin,Latin Tilpinus; died 794 or 800), whose name was corrupted in legend as Turpin, was the bishop of Reims from about 748 until his death. He was for many years regarded as the author of the legendary Historia Caroli Magni, which is thus also known as the "Pseudo-Turpin Chronicle". He appears as one of the Twelve Peers of France in a number of the chansons de geste, the most important of which is the The Song of Roland. His portrayal in the chansons, often as a warrior-bishop, is completely fictitious.
According to Flodoard, the tenth-century historian of the church of Reims, Tilpin was originally a monk at the Basilica of St Denis near Paris. He may have served as a chorbishop under Bishop Milo of Trier before becoming full bishop upon Milo's death around 762. The date of Tilpin's election as a bishop is unknown, usually being placed in 748 or 753. According to Hincmar, the later archbishop of Reims, Tilpin occupied himself in securing the restoration of the rights and properties of his church, the revenues and prestige of which had been impaired under the rule of the more martial Milo.
Before Tilpin's episcopate, probably no earlier than 745, a community of priests had formed in the 6th-century basilica that housed the relics of Saint Remigius. It was Tilpin who gave this community a monastic rule and thus founded the abbey of Saint-Remi. He is also credited with founding the scriptorium and library of Reims Cathedral. In 769, Tilpin was one of twelve Frankish bishops to attend the synod of Rome.
In 771, Carloman I, joint king of the Franks with his brother, was buried in a 4th century Roman sarcophagus in the abbey of Saint-Remi in Reims. Tilpin presumably performed the funeral. As a result, the city of Reims was neglected during the long reign of Carloman's brother and rival, Charlemagne. Despite the apparent coolness between Tilpin and Charlemagne, the latter did confirm several of his brother's donations to Saint-Remi.