Ó Dubhurthuile
Ó DUBHURTHUILE—I—O Dorhilly, O Durley, O Dowrley, Dufferly, Doorley, Doorly; 'descendant of Dubhurthuile' (black Urthuile); the name of a family of Ui Maine in Co. Galway, who were seated near Loughrea. It is still common in Connacht.
Alphabetical Index to Irish Surnames