After many years on this search, have located the Belgian records for the marriage of Rosalie Mercier and Francois/Francesco Rossio. Also found two children who died before Rosalie and Frank came to the USA with son Theophil. Frank Rossio (Roscio) was born in Favria, Italy as per marriage certificate. His parents are also listed on the certificate. Please view RD Rossio's family tree on Ancestry.com as he has now added the new information. A heartfelt thank you to Jean Luc Courbronne for locating these Belgian records not available in the US.