Mark Geary, born in Dublin, Ireland in 1973 to a large family with seven siblings. In 1992, Geary emigrated to New York at the age of 19. He gradually established himself as a respected and popular singer-songwriter in that area, playing frequently in venues such as Sin É. In 1999, Geary released his eponymous debut album on Paradigm Records.
Geary has since released two other albums: 33 1/3 Grand Street in 2003 on sonaBLAST! Records and Ghosts in 2004 on Signature Sounds.