The Genetic Legacy of Niall of the Nine Hostages.

A Y-Chromosome Signature of Hegemony in Gaelic Ireland. By Laoise T. Moore et al. American Journal of Human Genetics, Vol. 78 No. 2 (February 2006). Also here and here.

Are you a descendant of Irish King Niall of the Nine Hostages. Florida Irish Heritage Center, August 19, 2011.

Medieval Irish warlord boasts three million descendants. New Scientist, January 18, 2006.

High King Niall: The most fertile man in Ireland. By Jan Battles. Sunday Times of London, January 15, 2006.

Niall of the Nine Hostages: DNA meets a legend. Irish Genealogy Toolkit.

The Death of Niall of the Nine Hostages. Celtic Literature Collective.

Niall of the Nine Hostages. Wikipedia.

Annals of the Four Masters. CELT.

List of High Kings of Ireland. Wikipedia.

The Death of Niall of the Nine Hostages