The most famous, Oisin in Tir na nOg belongs to the Fenian Cycle, but several free-standing adventures survive, including The Adventure of Conle, The Adventure of Bran mac Ferbail and The Adventure of Laegaire.
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When the Irish hero, Oisin, is taken to the Land of Youth, he sees himself mounted on a white horse, pursuing a beautiful girl on a dark horse who bears in her hand a golden apple.
James Macpherson claimed to have found old poems from Ossian (or Oisin).
In Blood of the Isles, Bryan Sykes gives the populations associated with Y-DNA Haplogroup R1b the name "Oisín" for a clan patriarch, much as he did for mitochondrial haplogroups in his work The Seven Daughters of Eve.
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In Shadowmagic, a novel and podiobook by John Lenahan, Oisín is the king of Tír na nÓg and the father of Connor, the lead character.
Jos mä oisin sä | Oisin | The Wanderings of Oisin and Other Poems | The Wanderings of Oisin | Oisin Fagan | Oisín | Jos mä oisin sun mies |
Aubrey Gwynn concludes that Ua Oisin was not a Bishop immediately prior to his investiture as the first Archbishop of Tuam and of Connacht.
Former broadcasters on CRY who have moved onto national broadcasting include Derek Kiely, Will Downing and Oisin Langan while Thomas Breathnach moved to South Africa to work with Cape Town station Heart 104.9.
"Jos mä oisin sun mies" is a song by a Finnish pop singer Jontte Valosaari.
Produced by multi-instrumentalist Steafan Hannigan and recorded at his Oisín Studios, Not to Scale was released on the newly founded RootBeat Records on 14 June 2003, to coincide with the band's appearance at the first Festival of the Peak, a festival held at Carsington Water in Derbyshire.
It featured musicians such as Oisín Mc Auley and Éamonn Doorley from Danú, Gerry O Beirne, and John Doyle from Solas.
The group of Irish scholars emerged from competing societies, such as the Celtic Society and the Irish Archaeological Society, focusing on the translation of Irish literature from the "Fenian period of Irish history", specifically, the mythological works of Oisín and the Fianna, and the promotion of the Irish language.
Oisín, the son of Finn mac Cumhail, is taken across the sea to the Land of Youth by Niamh, the daughter of the king of that country, and he returns to Ireland a few weeks later only to find that many hundreds of years have passed in his absence.