I have had the pleasure of using the National Library - Enaclann - OMS collaboration "Ask About Ireland" website and its Griffiths Valuation and the place name search tool. As Claire said, there is a problem however, and I was hoping someone out there in the netherland could help us solve it. I will use the example of my gggrandfather, Patrick McCosker (c. 1813 - 1868). It took a lot of searching to locate him mainly because of the spellings that were used. All records, and that includes my great grandmother's name, indicated that we were looking for a McCusker (and a variant that included McKuscar, but not McCosker). It further developed that we were looking for the townland of Augaronan, with a variant of Augharonan. I would probably be in the parish of Donacavey because we had an oral record of Catherine McCusker's marriage to Owen McCarroll in the Roman Catholic church in Donacavey. (The two parishes seem to break apart going to Donacavey (Fintona) and Clogher at this point), We finally located Catherine's father Patrick, but it was as a McCosker. (Just a little difference between an "O" and a "U".) And it became clear that he was a farmer living in Agharonan (another spelling "error," but made it hard to locate him). Because we had been successful in locating the McCarroll homesite in Corkhill (and we do have pictures just as it was being torn down in 1982), we wanted to see where Catherine's beginning were, now that we had finally survived the challenge of her name (she went by McCusker all of those years). The problem was that the map citation was incorrect because the western portion of the townland of Agharonan was not on sheet number 51. So I attempted to bring up various townlands, such as Garvallagh and Derrybard, in order to locate the missing western portion of the townland we were interested in, those properties or holdings, numbered 34 and 35 in the townland. But, to no avail and we still do not know just where to go from here. Regards, Jim Carroll