In Irish folklore, the Tuatha Dé Danann signifies the mythical ancestors of the Irish people, embodying mythic royalty and supernatural prowess. They are often associated with ancient gods and represent the transition from a world of magic to one dominated by mortals. Their stories emphasize themes of heroism, conflict, and the struggle for power. The Tuatha Dé Danann are also linked to various locations in Ireland associated with their legends, serving as a connection between the past and present. Their lore continues to shape Irish identity and cultural heritage.