Brian O'Sullivan

Brian O'Sullivan was born in county Cork, Ireland. On completing a degree at University College Cork, he went on to travel extensively. Now based in New Zealand, he runs a small publishing company (Irish Imbas Books) with his family but returns to Ireland on a regular basis. Updates on his writing and articles on aspects of Irish culture, can be found at the Irish Imbas Books website or through his monthly newsletter (Irish Imbas Substack).

Brian writes fiction that incorporates strong elements of Irish culture, language, history and 'mythology'. These include contemporary versions of the Fionn mac Cumhaill/ Fenian legends (The 'Fionn mac Cumhaill Series' and the 'Irish Woman Warrior Series'), mystery thrillers (The Beara Trilogy/ The Beara Series) and literary short stories (The Irish Muse collection etc.). Brian also produces non-fictional content to help explain the fundamentals of 'Irish mythology'.

Although he writes predominantly for an Irish audience, Brian's unique style and plotting twists, his attention to cultural and historical accuracy, and his humour have made his books firm favourites for readers around the world.

The sixth book in the Fionn mac Cumhaill Series (Fionn: The Betrayal) was released in the first quarter of 2025.

Brian is currently working on 'Liath Luachra: The Quiet One' and 'Beara: Cry of the Banshee - Part One'. Both books are expected to be released towards the end of 2026.