Ryan's Fancy was a musical group of the '60s, '70s and '80s. The three members were all Irishmen who had emigrated to Canada. Denis Ryan, Fergus O'Byrne, and Dermot O'Reilly, were originally members of the Sons of Erin. The original Sons of Erin line-up featured Dermot and Fergus along with Gary Kavanagh and band leader Ralph O'Brien. When the band broke up Dermot, Fergus and Gary continued on for one tour as O'Reilly's Men and upon returning to Toronto met up with Don Sullivan to form the original Sullivan' Gypsies.