In The Dàn Cycle series – The first Druid was the Tuatha God All-Father. In the days when the Gaels first came to Erin from the coastal region of the Spanish region once known as Galicia, Dagda created five sects. He passed his magic to them once the Tuatha Dé Danann and the Gaels forged the Great Agreement, where they both would halt their battles in exchange for the Gaels paying homage to the Tuatha Gods. In turn, the Tuatha ceded the land of Erin to the Gaels, with some Tuatha remaining in the underhalls of Erin that Danu, All-Father, Badb, and Lugh had created. Dagda’s Druids were the skilled guides who ensured the Gaels remembered the myths and legends of the Tuatha and continued their worship of the adopted gods.