Caiseal Mór was born in Australia of Irish parents and grew up surrounded by the traditions of storytelling and music that are so much a part of the Gaelic culture. As a child he learned to play the harp, a skill that had been passed down in his family over many generations. He gained a degree in Performing Arts from the University of Western Sydney in 1990 and has since worked as an actor, a teacher and as a musician. Caiseal's family is from Youghal, County Cork.