The Éoganacht is a historical dynasty in ancient Ireland, known for its significant influence in the region of Munster. This lineage is believed to have descended from Éogan, a legendary figure in Irish mythology. The Éoganacht rulers were prominent during the early medieval period, often associated with the kingship of Munster. The dynasty is divided into several branches, including the Éoganacht Chaisil and Éoganacht Glendamnach. They played a crucial role in the political landscape of Ireland, often engaging in alliances and conflicts with other dynasties, such as the O'Brien and MacCarthy families. Their legacy is reflected in various historical texts and genealogies.