Mary Byrne, 50, is a supermarket worker from Ballyfermot, Dublin. She is the oldest of the final 12 contestants in the 2010 X Factor. She says she wanted to be a singer all her life but never had the confidence until now. She is a single mother to her 23-year-old daughter Deborah. She has performed with her brother Tommy under the name The Tommy Lee Experience. In 2008 she won the Irish television singing contest Nollaig No. 1 using the name Mary Lee, releasing the single "Siúil Leat".