Dublin, IR -- Scientists in Ireland may have found the country's most fertile male, with more than three million men world-wide among his offspring.
The scientists, from Trinity College Dublin, have discovered that as many as one in 12 Irish men could be descended from Niall of the Nine Hostages, a fifth-century warlord, head of the most powerful dynasty in an ancient Ireland.
An earlier study has shown that Genghis Khan, the Mongol emperor who conquered most of Asia in the 13th century, could have nearly 16 million descendants.
PhD student Laoise Moore tested the Y chromosome which is passed on from fathers to sons, and examined DNA samples from 800 males across Ireland.
Modern surnames tracing their ancestry to Niall include Gallagher, Boyle, O'Donnell and O'Doherty. Niall reportedly had 12 sons, many of whom became powerful Irish kings themselves.