Niall of the Nine Hostages was a legendary Irish king from the 4th or 5th century, often associated with the Uí Néill dynasty. He is best known for his military prowess and for uniting various tribes in Ireland. His reign is marked by the establishment of a powerful kingdom and the expansion of influence over neighboring regions. The title "Nine Hostages" refers to the practice of taking hostages from rival tribes to ensure loyalty and peace. Niall's legacy includes the spread of Christianity in Ireland, as he is believed to be an ancestor of several notable saints, including Saint Patrick.