Denis Leary was born and raised in Worcester, Massachusetts, the son of Nora (Sullivan) and John Leary, Irish immigrants who had grown up together. His mother was a maid and his father was an auto mechanic. After a childhood in the 1960s, Leary went to Emerson College in Boston, where he tried his hand at acting and writing. He was a charter member of Emerson's Comedy Workshop, and taught at the college for five years after graduating. By that point, he had written several pieces for magazines and had worked at
