Is The Last Name Gannon Irish?
Gannon Family History Variants of the name Gannon include McGannon and Gannan. These names are derived from the Gaelic Mag Fhionnain sept that was located in County Mayo. … The American actress Mary McGannon, 1829-1868, was of Irish parentage. Nicolas John Gannon, 1829-1875, the famous poet, was born in Kildare.Read More →