 A similar name can be recognized in Blainville-sur-l'Eau ("Villa Bladini" 10th century) 'the estate of "Bladinus" '

Crevon is a former parrish ("Chevron" 1068 - 76, "Kevron" 13th century, "Quevron" → 16th).Crevon is the metathesis of the Norman "Quevron", that is "chevron" 'beam' in French, that is to say "beam to cross the stream".Now the stream itself is called Crevon.