|Born||1956 (age 60 or 61) 
|Occupation||Breakfast television presenter|
|Known for||Ireland AM|
|Spouse(s)|| Ann (deceased)
Born in Cork, Ireland, Cagney was one of eight children in the family; he left home at age 15 because of difficulties with his father, who he described as a "remarkable man": an inventor, a musician, a welder, a mechanic, and a lecturer in electronics.
Cagney learned how to take care of himself as a result of being on his own so early. He longed to have some musical ability, but settled for working with a variety of bands. He also learned about audio and audio studio processes; this got him a job as a shore-based radio operator. He devoted quite a bit of his paycheck to visiting night clubs; when a disk jockey did not show up for work, Cagney was asked to fill in, doing well enough at it to become a regular at the pirate radio station and now had two jobs. Before long, he was at RTÉ Radio Cork.
He joined RTÉ in 1977, and was part of the original line-up of 2FM, broadcasting on its first night on air. During his time with 2FM, he called himself "Mark Anthony" and presented a variety of shows, from the seminal Night Train to the Drivetime show. In 1985 he won a Jacobs' Award for his midnight radio show. In 1989 he joined the new 98FM, staying there for seven years. He joined Today FM in 1998 and then joined TV3 Ireland. He won the TV Personality of the Year Award in 2005 at the 3rd Irish Film and Television Awards. Today he hosts the breakfast show Ireland AM on TV3.
He lives in Sutton in north County Dublin with his second wife Audrey and their four children. His first wife, Ann, whom he met when he was 19, died of a brain haemorrhage; the couple had been married 11 years. When Ann died, Cagney was devastated; Audrey, who worked with him at 98 FM, provided emotional support which turned into love. When Cagney discovered he was having difficulty hearing, he went for testing; the results showed he had a hearing loss. He was fitted with a hearing aid, and in 2008, chose to make the information public. Cagney was a heavy user of cocaine in the 1980s.
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- "HE'S A MARKED MAN; Ireland AM star Cagney tells of his anguish at losing wife and fears for his kids.". Retrieved 14 March 2013.
- Jackson, Joe (4 December 2005). "Cagney live and uncovered". Irish Independent. Retrieved 14 March 2013.