1986: Communications degree at university in Dublin.
Set up Comedy Cellar above pub with two friends, who performed sketches together under the name of The Trellis: "We thought we were the most hilarious people in the world," O'Hanlon recalls.
Late 80s-early 90s: Did various jobs to supplement income as stand-up, including a day as an extra on My Left Foot. "I also worked at Dublin airport as a check-in clerk and dressed up as a butler to give out free samples of Hennessy cognac.''
1994: Came to London to develop career as stand-up. "Only when I came to London did I put up my hand and say, `Yes. I too am a comedian.' It's like Comedians' Anonymous.'' Won Comedy Newcomer of the Year Award for stand-up act within a week of his arrival. Won role of Father Dougal in Father Ted.
1995: Won Top Comedy Newcomer Award for Father Dougal at British Comedy Awards.
1996: National stand-up tour.Reuse content