Gaffigan is a surname of Irish origin. It is an Anglicized form of the surname O’Gavigan and an alternate spelling of Gaughan, which in turn comes from Ó Gáibhtheacháin.https://books.google.com/books?id=hiGyDgAAQBAJ&pg=PT113&dq=gaffigan+irish+last+name&hl=en&newbks=1&newbks_redir=0&source=gb_mobile_search&sa=X&ved=2ahUKEwj954mDs_-TAxWDk2oFHfOBJM8Q6AF6BAgNEAM Notable people with the surname include:
James Gaffigan (conductor) (born 1979), American conductor Jeannie Gaffigan (born 1970), American actress, producer and comedy writer Jim Gaffigan (born 1966), American stand-up comedian, actor, writer, and producer
See also Gavigan McGaffigan
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