Correct. If my info is right, this is not the same Leoluca from NOLA, though both were Corleonesi. The one who was a mafioso in NO I believe was born in Corleone around 1888 to a Salvatore Trombatore and Lucia Streva. There was also another Leoluca Trombatore in NOLA, to confuse things further, born about 1886 in Corleone, father named Placido. I have no idea if he was also connected.
The one in Illinois I have as born 1891 in Corleone to Carmello Trombatore and Bernarda Freia. This Leoluca (who went by Louis or Luke also) married Lucy Di Puma of Corleone. By 1940 Luca and Lucy had moved Rockford to Chicago, where they seem to have stayed. Luca died 1979 in Chicago.
I wasn't able to confirm a Stefano Trombatore as a brother, however. The Stefano Trombatore referred to above was likely born about 1900 in Corleone, but I'm not sure who his parents were. In 1928 his wife Martina Fiducio gave birth to a daughter in Chicago, and then by the 1930 census they were living in Rockford. Two of their kids seem to have subsequently been born in Sicily, so there was maybe some back and forth migration. Stefano died 1977 in Whittier, CA.
There was also a bunch of other Trombatores in Chicago from Corleone. I wonder if any were connected guys.