Wikipedia
Cellanus
Cellanus (fl. ca. 675-706) was the abbot of Péronne in Picardy. At the time, Péronne was known as Perrona Scottorum on account of its fame as a home to Irish peregrini.
He was a penfriend and correspondent of Aldhelm, and it is from a surviving letter that much of our knowledge of Cellanus originates. Ludwig Traube believed him to be identical with the Abbot Cellanus whose obit is recorded in the Annales Laureshamenses under 706; and was probably the Cellan mac Sechnusaigh, sapiens, recorded in the same year in the Annals of Ulster (pp. 96–119, 1900). Traube furthermore attributed two hexameter poems to Cellanus (Traube, pp. 105–08, 1900).