Thanks very much for your contribution. I will go ahead and add Thomas to my notes.
Are you sure he is a Rigsby, though? I checked the census, and I don't see an "s" in the name. Also, I can't see this Thomas on any of the earlier censuses.
There were very few Rigsby families in New York. A James Rigsby and his wife Ellen McGoldrick immigrated there about 1851, and there were a few more Rigsby immigrants there on the 1900 census. There were several families named Bigsby and Rigby in NY, but so far I haven't found any connection between them and the Rigsbys.
I suspect this Thomas is actually a Rigby, but I will keep checking on him just in case. Do you know any other records that show him as Rigsby?