William "Black Bill" Tocco was the detroit mob boss from 1932 70 1936,married Rosalia Zerilli the sister of Joseph "The Old Man" Zerilli boss from 1936 to 1977.
Another Black Bill son (Jack Tocco) become boss from 1979 to 2014.
The current boss Jackie Giacalone was the son of Vito William "Billy Jack" Giacalone (April 16, 1923 – February 19, 2012) a longtime capo.

Can say that the Detroit mob is based on the Zerilli-Tocco-Giacalone families.