hi there, i dont know if this is of any relevance to yourself, but my mother born in 1958 fairly near to naples (foggia) is a schiavone, Maria Schiavone, daughter of Mattia Schiavone born 1936. My mum has 2 sisters and a brother ( valervadina, antonetta and bellisario) and my grandadhas 11 brothers and sisters. some of whom still live in the naples area, and others who have moved to milan. i am aware that there are schiavones we are related to living in the USA and also canada.
if i am able to help in any way, dont hesitate to mail, i'd be happy to help.