Burt Gervasi was an associate of the Soprano crime family, the cousin of Carlo Gervasi, and the husband of Lorraine Gervasi. He is shown in 2006, becoming a made man in the same time that Gerry Torciano was made capo in the Lupertazzi family. He later joined the Soprano crew and worked alongside with Patsy Parisi making weekly collection of money from stores. He was probably friends with Christopher Moltisanti since he visited his bachelor party and was at his funeral.
This may have led to Carlo becoming an FBI informant, in addition to help his son who was arrested for drug dealing.