Rich Shea: I have a Richard Welch/Walsh in the 1845 census of Nunda, Livingston Co., NY newly married to Bridget Mary Dwyer, both b Ireland. The explanation I heard for the Welch/Walsh confusion is that they were born Walsh, but pronounced it Welch, so the census enumerators all too often wrote it down that way. I have plenty of information on them, but no proof of their parents. Would be glad of help. Mary Fallon Richards