Broadway credits: The Seafarer and Stones in His Pockets. Off-Broadway credits include Shadow of a Gunman, The Playboy of the Western World, Pigtown at The Irish Repertory Theatre, Trust at The Kirk Theatre and Paddywack at The Mint Theatre.
Regional credits include The Seafarer and A Christmas Carol at The Alley Theatre in Houston, Dancing at Lughnasa, The Pitmen Painters and The Weir at Palm Beach Dramaworks and The Seafarer at Capital Repertory Theatre. He has also toured the US with Belfast's Lyric Theatre in their production of Philadelphia, Here I Come!
Film and Television: Can Hitler Happen Here?, Kings on NBC, Sunburn with Cillian Murphy.
Declan is a graduate of The Neighborhood Playhouse School of the Theatre in New York City.