OISIN IN TIR-NA-N-OG.

One morning in Summer Fionn and the Fianna were hunting with Oisin by the shores of Loch Lein in Kilarney. Out of the mist came a beautiful young woman, riding a snow white horse.
Fionn spoke to her and she told him that she was Niamh Chinn Oir, daughter of the King of Tir-na-n-Og and that she had come for Oisin.
Oisin climbed on the white horse and off they went, over bog and mountain until they came to the sea. The horse galloped out over the water and after a long journey they reached Tir-na-n-Og.
The King had great welcome for them and that day they were wed.
Oisin was very happy here and did not feel 300 years going by but he longed to see Fionn and the Fianna once more.
Niamh agreed to let him go but warned him not to step on the soil of Ireland or he would never be able to return.
Oisin rode the white horse to Ireland to discover that everything had changed and that Fionn and the Fianna were long dead. He decided to return to Tir-na-n-Og. As he traveled through Gleann na Smol he saw some men trying to lift a heavy rock. He bent down to help them, his saddle strap broke and he fell to the ground.

A great change came over Oisin and suddenly he was 300 years old. They brought him to St Patrick and Oisin told Patrick all about Fionn and the Fianna and the warriors of Ancient Ireland and about Tir-na-n-Og. When he had told him everything St Patrick baptised him and Oisin died.