<P> Keller is a surname that in most cases is of German origin . In modern German Keller means cellar or basement but historically it designates a cellarer or winemaker . A Latinized form of "Keller" is "Cellarius". </P> <P> Keller my also be the Anglicized version of the Old Gaelic surname Ó Céilechair (meaning descendant of Céilechair). Céilechair was descended from Cennétig mac Lorcáin King of the Dál gCais in modern - day Clare, which was at that time the Gaelic Kingdom of Thomond . Cennétig mac Lorcáin was the ancestor and progenitor of the Keller family, and also of the Kennedys and O'Briens of Munster . </P>

Where did the last name keller come from