According to Herder's Lexikon der Heiligen und Heiligenverehrung Vol 1, Exuperius (according to tradition) was the first bishop of Bayeux (4th cent.)
The "Heiligenlexikon" (
www.heiligenlexikon.de) gives "he who devotes himself" as the meaning of his name. I couldn't find anything matching in my Greek dictionaries, but maybe somebody else does.