John Jacob Astor IV was an American business magnate, real estate developer, investor, writer, lieutenant colonel in the Spanish–American War, and a prominent member of the Astor family. He was among the most prominent American passengers aboard RMS Titanic and perished along with 1,500 people when the ship sank on her maiden voyage. Astor was the richest passenger aboard the RMS Titanic and was thought to be among the richest people in the world at that time, with a net worth of roughly $87 million when he died.

Caroline Webster "Lina" Schermerhorn Astor was a prominent American socialite of the second half of the 19th century who led the Four Hundred. Famous for being referred to later in life as "the Mrs. Astor" or simply "Mrs. Astor", she was the wife of yachtsman William Backhouse Astor Jr. They had five children, including Colonel John Jacob Astor IV, who perished on the RMS Titanic. Through her marriage, she was a prominent member of the Astor family and matriarch of the male line of American Astors.