I noticed in the search,there appears to be three seperate Bull Montana's listed
for 3 seperate fights,1925,1928 and 1931.
I believe this Bull Montana is the well known wrestler and Hollywood stuntman during the silient era
(best known for have played the missing link in 1926 classic THE LOST WORLD.
Bull Montana also appeared in the 15 chapter serial, DAREDEVIL JACK starring Jack Depsey in 1920.
He was also a wrestler,and acccording o the book FLAME OF PURE FIRE,
Jack Dempsey wrestled him(and pinned him)probably a goof exhibition,
just before the Carpientier fight in 1921.
For more about Bull Montana's career,check out http://www.imdb.com