I just stumbled on this message board, here several years after the first inquiry.
I am a member of the Gambone family from Montella. My great-grandparents, Guiseppe and Maria, emigrated from Montella in the early 1900's, I don't have an exact year. Eventually they settled in the coal mining region of Fayette County in Southwestern Pennsylvania. I am told that Gambone is a very common name in Italy, so your search may be a challenge. Ruth, you may contact me for other questions. I am learning about my great-grandparents and their decendants are numerous and mostly along the eastern US.
Lisa Kurcina