Gambino later moved to a modest house located at 2230 Ocean Parkway in Brooklyn; his Long Island residence, located at 34 Club Drive in Massapequa, served as his summer home. The two-story brick house, surrounded by a low fence with marble statues on the front lawn, was at the end of a cul-de-sac in Harbor Green Estates, overlooking the South Oyster Bay. In 1932, Gambino married one of his cousins, Catherine Castellano, sister of Paul Castellano. They raised four children – sons Thomas, Joseph (died February 2020 ) and Carlo, and a daughter, Phyllis.