Belcinac Monastery[1] was founded in the second half of the 7th century by Saint Condède, a monk of Fontenelle Abbey.
The monastery was built on an island in the river Seine in France, called Belcinac in ancient texts.
The island, which sank in 1330, was donated by Theuderic III, King of Neustria, and son of Clovis II and Balthild.
This island, located on the Seine opposite Villequier and downstream from Caudebec-en-Caux, was referred to as lutum (lotus) in the donation charter.
In the 7th century, the island was approximately three miles long and five hundred yards wide and had often been partially submerged.