Drogheda's out on the east coat. Road runs straight from there into Dublin.
Just so happens that my people regularly traveled the south coast of england. Road between Brighton and Poole, even as far as Exeter.
So, if ~ for the sake of comparison ~ we apply that stencil to your folks; We have a precedent that it may be entirely possible that they traveled between any two points, up and down their own coast road.
In fact, the entire East Coast Road. Anywhere between Dundalk and Wexford falls within their realm of feasibility. Dublin would be easy, peezy.
Maybe something worth putting in ye shoe box?