Éogan Mór was a prominent figure in early Irish history, believed to have lived around the 1st century AD. He is often regarded as the founder of the Éoganachta dynasty, which played a significant role in the political landscape of ancient Ireland. Éogan Mór is associated with the region of Munster, where his descendants would later become influential kings. His legacy is reflected in various historical texts and genealogies, which trace the lineage of the Éoganachta back to him. Éogan Mór's descendants, including notable figures like Brian Boru, contributed to the shaping of Irish culture and governance during the medieval period.