I know this is an old post, but I'm answering anyway.
I believe your grandmother was correct. Joachim Sambola and his wife Theresa Coulon had a son J.J. Sambola; it's mentioned in Joachim's obituary which is attached. The obituary also mentions the macaroni business.
According to Orleans Parish marriage records, Joseph John Sambola married Mary Catherine Phillips in 1905. You can order the marriage license, which will list their parents, from the state archives. It's in the 1905 Orleans Parish Marriage Records, Page: 525 Volume: 26.