Hi there,
I remember Dan Brennans Forge in Graigue-cullen, and Dan himself. He was such a colourful character. His grand-daughter is my sister in law. I know her sister is researching family also. I have a photo of Dan, pictured outside his forge with some local children taken circa 1965. If you are interested, I can forward it to you. Dan passed away, but he has sons and at least one daughter still living in the area.