According to Griffith's, the Marquis of Thomond owned land in Kilkeedy parish occupied by my gggrandfather. The marquis died that same year, 1855, and the land passed to the D'Arcy family as the marquisate became extinct. One son of the marquis, William Smith O'Brien, was an Irish revolutionary politician sentenced to death for sedition but subsequently pardoned. I'm wondering the the extinction of the marquisate was a result of O'Brien's revolutionary activities. I'd be interested in learning more about this family. (I like the thought that my ancestors rented from people who were sympathetic to their tenants.) Diane Culhane