Niall of the Nine Hostages

Niall Noígíallach (pronounced [ˈn̠ʲiːa̯l̪ n̪oːi̯ˈɣʲiːa̯l̪əx]; Old Irish "having nine hostages"), or Niall of the Nine Hostages, was a legendary, and possibly historical, Irish king. He was reputedly a High King of Ireland, and the progenitor of the Uí Néill dynasties who dominated Ireland from the 6th to the 10th centuries.

Source: Wikipedia — Niall of the Nine Hostages (CC BY-SA 4.0)