As I said in a post on another section on this board, we have done a good job of researching Bay Area boxing during this period, so he should be in the database if he had any sort of career.
I also read an article in the Fresno Bee about fighter aliases, that would lead me to believe that about 40% of the boxers who were active during the four-round era, were using aliases. It was very common if you did not have an Anglo-Saxon name.