Ansbert of Rouen was a 7th-century Frankish monk, abbot, and bishop who served the Merovingian court before entering religious life. Born in Chaussy, he initially held high-ranking positions as a chancellor and referendary for King Clotaire III. Following the king's death in 673, he joined the Benedictine order and eventually led Fontenelle Abbey as abbot. He later became the archbishop of Rouen, though he was eventually removed from this position and died in exile at Hautmont Abbey.
Life and career

After renouncing his secular career, Ansbert oversaw significant growth at Fontenelle Abbey, where he expanded the library and founded hospitals for the needy. He also served as a confessor to King Theodoric III. His tenure as archbishop of Rouen ended around 690 when he was dismissed following accusations from Pepin of Heristal, possibly due to his strict lifestyle or political friction. He spent his final years at Hautmont Abbey.
Veneration and legacy

He is recognized as a saint in both the Catholic and Eastern Orthodox traditions, with his feast day observed on 9 February. Following his death, reports emerged of a sweet fragrance emanating from his tomb and a red cross appearing on his skin. While accounts regarding the location of his remains vary, he remains a significant figure associated with the history of Fontenelle Abbey.
