Finguine Beag was the third son of Domhnal Duiv O Donoghue of the O Donoghue of the Glen royal line and Honora McCauliffe. His niece was Mauire ni Dhuibh, grandmother of Daniel O Connell, the Liberator. Finneen was
much feared by the Establishment, making life difficult for them in Killarney and Glenflesk. He married Catherine Barry in 1711 and lived in Killeen Townland.