Micheal O Muircheartaigh was born in 1930 in Dun Sion, near Dingle, Co. Kerry. He was educted in the Presentation Convent and the Christian Brothers School in Dingle, at Colaiste Iosagain in Baile Bhuirne, Co. Cork, and at UCD. He was a primary and secondary school teacher for many years. Besides his renowned work as a radio commentator, he has long been a champion of the Irish language. He and his wife, Helena, live in Dublin. His memoir, From Dun Sion to Croke Park, was the best selling hardback book in Ireland in 2004.