I am trying to contact family who moved to South America from Sicily around 1910. When my grand parents came to the United States from Sicily, my grand fathers brother moved to Brazil, and later to Argentina. So I am trying to connect with any Ledda's there. My grandfathers name was Angelo Ledda. Any help would be appreciated.
You can search the surname in the current white pages for Argentina. Possibly you can somehow narrow down the area in Argentina where your ancestors lived before you try contacting some of these people.
The following site has passenger lists to Brazil, in case you need those.