Irish folklore leprechaun, banshees, changelings and many others. The origin of these Irish fairies could be dated back to the ancient Celtic beliefs of pagan Gods and supernatural beings. However, there is no linear path that traces the development of fairy lore in Ireland from its origin. Irish fairy lore has influenced many English authors, such as Jonathan Swift, who wrote Gulliver's Travels while living in Ireland. Ó Súilleabháin was part of the Irish Folklore Commission, "Béaloideas". Not long after the foundation of the commission he created two books for the collectors. The first, in 1937, a shorter volume in the Irish
Irish folklore Gaelic tradition and the tradition of story-tellying. He played particular attention to the stories of Fionn Mac Cumhail and the Fianna, and looked into how stories were told in Irish and in other languages across Europe. His work was and still is very important in the study of Irish Folklore for the masses. When Christianity was first brought in Ireland during the 5th century by missionaries, they were not able to totally wipe out the pre-existing folklore and beliefs in God-like fairies. But folklore didn’t remain untouched, and the myths and Christian beliefs were combined such that Irish folklore would