Oisin

Oisín is a name of ancient Irish origin, derived from the Old Irish word 'os', meaning 'deer' or 'fawn', combined with the diminutive suffix '-ín'. This gives it the meaning 'little deer' or 'fawn'. The name is most famously associated with Oisín, the legendary warrior-poet of Irish mythology, son of Fionn mac Cumhaill and the goddess Sadv. He is a central figure in the Fenian Cycle, a body of heroic tales concerning the exploits of the Fianna, a band of mythical warriors.

The legend of Oisín and Niamh of the Golden Hair tells of his journey to Tír na nÓg (the Land of Youth), where he lived for 300 years, believing only three years had passed. Upon his return to Ireland, he found his homeland transformed and his companions long dead. This tale has cemented Oisín's place as a romantic and poignant figure in Irish folklore, contributing to the name's enduring popularity and cultural significance in Ireland and among the Irish diaspora.