Irish:: shortened Anglicized form of Gaelic Ó Dubhshláin ‘descendant of Dubhshlán’ a personal name composed of the elements dubh ‘dark black’ + slán ‘challenge’.

shortened Anglicized form of Gaelic Ó Dubhlainn ‘descendant of Dubhfhlann’ a personal name composed of the elements dubh ‘black’ + flann ‘blood-colored red’.

shortened Anglicized form of Gaelic Ó Dúnlaing a North Leinster name meaning ‘descendant of Dúnlang’.

See Dowling.