For Shaun Bryan-- I was perusing the FTM CD of Griffith's Valuation Index, and happened to find a Michael and a Thomas BYRNE listed at Ballymacar, which shows as located in the parish of Oldross. Also listed in Ballymacar is a Thomas WALSH. Did you already have this info? Tried to search the Index for a placename of Grasscur, but came up with nothing. Regards, B.J. Thiele