Monica,
Thanks so much for finding that information about the family grave and posting it. It definitely matches the census information and must be the same family, having the granddaughter's name at the bottom from 2011 should really help in tracing someone connected to the family. I will share this information on the site that posted the original request.
It seems poor James died very young, just 2 years after he carried out the carpentry work on Butlers Medical Hall in Wicklow but it is nice to think that over a century later someone cares enough to try and reunite his signed piece of woodwork with a family member. Thanks Again Margaret