Dean-
thanks for your response.
About all we know about our grandfather George Lhamon is that his DOB is 8/12/1874 in New York state, he served in the Spanish American war, and I think he had a brother. That's about it.
My mother told us the name in French would be L'Hamon, but it was pronounced like lay-mon or layman. I, too have seen many variations.
If you learn anything more, please keep the board posted.