Frankish Christian monks

Bertin (; 615 – c. 709 AD), also known as Saint Bertin the Great, was the Frankish abbot of a monastery in Saint-Omer later named the Abbey of Saint Bertin after him. He is venerated as a saint by the Catholic and Orthodox Churches. The fame of Bertin's learning and sanctity was so great that in a short time more than 150 monks lived under his rule. Among them were St. Winnoc and his three companions who had come from Brittany to join Bertin's community and assist in the conversions. Nearly the whole Morini region was Christianized.

Abbot of Bobbio

Richarius of Celles (; ;  – April 26, 645 AD) was a Frankish hermit, monk, and the founder of two monasteries. He is venerated as a saint in the Catholic and Eastern Orthodox Churches.

abbot of Saint-Denis (9th c.)

ninth-century Frankish monk

"Sigirannus” is also the name of a 7th-century abbot of St. Cales in the department of Sarthe.