Fenians were founded in 300 bc by Fiachadh the High King of Ireland. While the tales of Arthurian Knights and their code of chivaley clearly belong to the midieval concept of an armed and mounted warrior of nobility or land holding class. With knight-hood only being bestowed by the King. the basis for the "Knights of the Round Table" does have a foundation in Celtic culture. It is argued that the tales of Arthur and his knights have more parralles with Fionn Mac Cumhaill and his Fianna
The stories of Finn (Irish: Fionn) mac Cumhaill and his band of soldiers the Fionna, appear to be set around the 3rd century in Gaelic Ireland and Scotland. They differ from other Gaelic mythological cycles in the strength of their links with the Gaelic-speaking community in Scotland and there are many extant texts from that country.
In Irish mythology, Dian Cécht, also known as Cainte, Canta, was the God of healing to the Irish people. He was the healer for the Tuatha Dé Danann and the father of Cian, Cu, and Cethé. His other children were Miach, Airmed, Étan the poetess, and Ochtriullach.