Niall
Niall (name) means a masculine given name of Irish origin, meaning "champion" or "cloud," the source of the English name Neil. Example: “Niall of the Nine Hostages was a legendary Irish king.”
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_____ of the Nine Hostages was a legendary Irish king.
Etymology
Borrowed from Irish Niall or Scottish Gaelic Niall, ultimately from Old Irish Níall, whose original meaning is uncertain. Suggested sources include nél ('cloud') and nïa ('champion'), the latter from Proto-Indo-European *h₃neyd- ('to revile'). It is a doublet of Neil.