The Ulaid, also known as the Ulaidh, were an ancient people who inhabited the region of Ulster in present-day Ireland. They are often associated with the legendary tales of Cú Chulainn and the Táin Bó Cúailnge, which highlight their significance in Irish mythology. The Ulaid were known for their warrior culture and played a crucial role in the early history of Ireland. The Ulaid were one of the major kingdoms in Ireland during the early medieval period. Their territory included parts of modern-day County Antrim and County Down. The Ulaid were known for their contributions to the Gaelic culture, including language, art, and social structure, which influenced the development of Irish society as a whole.