Doolan
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]
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]