Doolan Explained

Doolan (Irish: Ó Duibhleachain) is a surname of Irish origin. They were chiefs of the Clan Breasail Mac Duileachain in the Ulaid sub-kingdom of Dál Fiatach, specifically located in what became the barony of Castlereagh.[1]

Notable people

See also

References

  1. [John O'Hart]