Pictures of Usshers

Many years back, my auntvisited Ireland and came back with copies of paintings that had been done of John Ussher (b 1771) and John Ussher (b 1806) at Eastwell. Of course, she did not note the source of the images.

I have attempted to search online databases, but I understand that those types of things are expensive to maintain, so have had no luck.

Any notions of where would be a good place to inquire? Galway archives? A historical society?

Andrea