In his book on the O Dwyer family, “The Dwyers of Kilnamanagh” Sir Michael O Dwyer says that after the battle of Kinsale and the Flight of the Earls some of the O Dwyer family moved to France.
There the name became francized as Haudaoire (which if you pronounce with a good french accent comes out very like the Irish O Duibhir)

I Googled the name out of idle curiosity this morning and was pleased to discover that the French branch was also involved in the culinary arts.