Realm of the Tuatha de Danann
Long before their people fought religious wars over Christianity, the Tuatha de Danann were revered as the gods of Ireland, larger-than-life figures who inspired as much by their squabbles and intra-family troubles as by their awesome prowess in combat. Descended from the Great Mother Danu, they freed Ireland from the depredations of the Fomorians (their Titans) and ruled it in relative peace for centuries before the invasion of new peoples and religions eventually forced them to follow their Great Mother and High King into the fairy mounds and depart from the world for all but the most important of matters.
Some of the Tuatha de Danann Deities
Manannan mac Lir is the son of Lir, an ancient ocean god believed by many to be of an older generation than the other Tuatha, born of some long-lost line of Danu or even a sibling or close relation to her. Indeed, his son certainly seems different from the other Tuatha; Manannan is the god of the sea that beats against the rocky shores of Ireland and of the restless dead, a figure of dread, confusion, and mystery. Despite the dark realms he moves through, he is an honorable god and is often sought for the fairness of his rulings, a fact that seems at odds with his occasional decision to act as a trickster to open the eyes of his fellow deities. He makes travel possible, whether by sea or atop a land steed, and often seems to possess an answer when no others can solve a problem without his knowing help.