"of Oisin"

 

Oisin is the son of Fionn mac Cumhaill and Sadhbh, he is regarded as the greatest poet of Ireland.

In the most well known legend involving Oisin, he meets a fairy woman called Niamh Chinn Oir, who falls in love with him and takes him to Tir na nOg, (the land of the young.)