Alfred Gwynne Vanderbilt, Jr. (September 22, 1912 – November 12, 1999) was a member of the prominent Vanderbilt family, a son of the first Alfred Gwynne Vanderbilt, who died a hero in the sinking of the RMS Lusitania. His mother, Margaret Emerson (daughter of the Bromo-Seltzer inventor Isaac E Emerson), was one of America's wealthiest women and most sought-after hostesses, operating at least seven large estates around the country. His grandfather, Cornelius Vanderbilt II, had been one of America's most revered businessman; his great-grandfather, William Henry Vanderbilt had been the richest man in the world. "Commodore" Cornelius Vanderbilt started the family fortune in shipping and railroads as the founder of the New York Central Railroad and builder of Grand Central Terminal in New York.