John Jacob Astor II (1791-1869), first prominent member of the Astor family and the first multi-millionaire in the United States
John Jacob Astor III (1822-1890), elder son of William Backhouse Astor, Sr. and the wealthiest member of the Astor family in his generation; founder of the English branch of the Astor family
John Jacob Astor IV (1864-1912), American millionaire businessman, real estate builder, inventor, writer, lieutenant colonel in the Spanish-American War; died on the RMS Titanic
John Jacob Astor V (1886-1971), British military officer, statesman, and newspaper proprietor
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