Yes it is the same person you have been corresponding with.
When I mentioned the names Nathan and Isaac, it was because the 1850 census for Louisville Kentucky, shows Eanmel Sale 34, Caroline 25, Simon 7, Nathan 4, and Isaac 1. I had never heard of Nathan and Isaac, but my Grandfather Andrew Sale was born Louisville Kentucky May 28, 1849. To the same family. You are probably right Isaac coud have been Andrew. The other thing is I don't find Nathan after that census, and I don't find him at Mount Sinai cemetery with the rest of the family.
I was writing an e-mail to you, when you posted this message, so I will get back to it.