Hailing from Navan, Co. Meath, Domhnall works as a travel journalist, columnist and author. He writes extensively for the Irish and British media, with work regularly appearing in the Belfast Telegraph, Woman’s Way, The Sunday Times and the Irish Examiner. Domhnall has received many prestigious honours for his writing, including the 2025 Travel Extra Travel Journalist of the Year award.

Mercier Press published his novels Crazy for You and Colin and the Concubine. His début novel, Sister Agatha: the World’s Oldest Serial Killer, was released in 2016.