Because family is at the heart of the Mafia
The fearsome criminal known as “The Clutch Hand,” because of the birth defect that crippled his right hand, was not a builder in the literal sense, but his Co-op was one of the earliest developers of Italian neighborhoods in East Harlem and the Bronx.
There are three first cousins from Corleone who immigrated to New York around the same time, and had the same name: Stefano la Sala. One would become known as Steve LaSalle, a high-ranking member of the Lucchese crime family for half a century.
Mafia Genealogy 