He was born in Bantry, Co.. Cork, Ireland. , 1979, 1980, 1981, 1982, 1991, 2001. His work has been published in numerous literary reviews and anthologies. Several of them can be consulted in Harvard University Library. His work appears in "The King's English". "En Mal de Fleurs" is a suite of poems written directly in French. O'Sullivan's poem ` Blip' was incorporated in Bantry, Co.. Cork, with the artists Cleary & Connolly. O'Sullivan is married and has three children. He has taught English at the Sorbonne, the Institut Supérieur d'Electronique de Paris. He is a senior examiner for the International Baccalaureate. Among other projects he co-founded the Festival Franco-Anglais de Poésie. O'Sullivan's friend, provided the cover art of three of his poetry collections, as well the portrait on the right.