Canovium was built at an ancient river crossing and was an important post on the Roman road and ancient drovers road via Bwlch-y-Ddeufaen to Abergwyngregyn and the Menai Strait.
He is the patron saint of many churches in Gwynedd in north-west Wales, such as St Mary and St Bodfan Church in Llanaber and St Bodfan church in Abergwyngregyn.