Muireann Rionach Prince (nee Barratt) was born in Killarney, Kerry County to Daire Barratt and his wife, Gormlaith.
Muireann was born on a May 12. The first sign of magic she showed was levitating a heather bloom from a table beside her crib to show her mother. Her brother adored her and would insist on watching over her. Muirrean would later joke that she was more his baby than anyone's.