This verse of the song also ties it to Co. Wexford,

The boys will sorely miss you,
When Moneyhore comes round,
And grieve that their bold captain,
Is nowhere to be found.

Moneyhore is a townland about two miles SW of Enniscorthy, Co. Wexford. In his "Enniscorthy: History and Heritage" (1998) Micheál Tóibín says, "That fine ballad 'The Bantry Girls' Lament' calls to mind the celebrated Fair of Moneyhore. The passing of a century has brought to an end these old village fairs and lent to them a romantic glow which will linger on in popular memory long after the dates of the gatherings and locations of the [fair] greens are forgotten".

(Re duplication of place names, there are dozens of Dublins in the US! See "Sweet Liberty" by Josephy O' Connor).