The Clancy Brothers And Tommy Makem was an Irish folk music singing group that formed in America in 1956. Widely credited with popularising Irish traditional music in the United States, and revitalising it in Ireland (paving the way for an Irish folk boom with groups like The Dubliners and The Wolfe Tones), Tommy Makem left the group in 1969, after which the three brothers (Patrick "Paddy" Clancy, Tom Clancy, and Liam Clancy) became The Clancy Brothers subsequently joined by the fourth Clancy brother (Bobby Clancy).