He is my GGG-Grandfather. We have found Argentine census records from 1855 that list him as 60 years old, and from Genova, although it is very hard to make out the portion of Genova. It looks like Mairana, but I cant tell. I have posted it below.

Any help in deciphering this name, as well as any info on how to get more information on Bartolo would be greatly appreciated!