Hi. My family OSTROFSKY may have come to Argentina with the Baron de Hirsh Foundation (aka Jewish Colonization Association) in 1891-1894. Some came to the USA but there were at least 10 children and I have not been able to track all of them. I am descended from Bessie Ostrofsky (gmother) who married Max Cytron. The rest of the Cytron family also may have come with this group although the original name was TZITVARIN.