Seán Ó Ríordáin was an influential Irish poet, born in 1916 in Cork, Ireland. He is best known for his contributions to the Irish language literature and is considered one of the leading figures of modern Irish poetry. His work often explores themes of identity, culture, and the complexities of life in Ireland. Ó Ríordáin's poetry is characterized by its emotional depth and innovative use of language. He published several collections, including An tOileánach and Caoineadh Airt Uí Laoghaire. His legacy continues to inspire new generations of poets and writers in both the Irish and English languages.