Before the coming of Christianity Ireland held to the belief that it had been found and colonised by a race of perfect godlike beings (if not Gods themselves) or super humans called the Tuatha De Danann. They rule the land in a generally benevolent way defeating it’s major enemies such as the fish like Formorians. Their tales are passed down through oral tradition by bards and poets. When the Monks of christianlty come to Ireland they tried to make sense of the tales to create a cohesive and realistic version of Irish history. They also sought to incorporate some of the legends into Christian works as well.
The Tuatha De Danaan were a mixture of Gods and their Demi-God children who eventually retreated to Tir Na Og to live out eternity. However is there any real substance in the tales and what might they be based on? Ireland has a rich history and culture with lots of Ancient sites but also modern inventions known all over the world such as Guiness and Mens Aran Sweaters like those from Shamrock Gift.
They come to Ireland on “flying boats” and use magic to blot out the Sun. They are tall and Blond of Hair or Strawberry blond and soon subdue the locals. Some have suggested that they are like the Atlantians, a race of Aliens that teach humans to develop. Or they could have just been the first wave of Nordic settlers from Norway. Whilst no physical evidence remains of their existence there are plenty of stories, still, to give us some idea of who they might have been.