John Jacob Astor IV Alida Rebecca Armstrong, Astor was also a great-grandson of Senator John Armstrong, Jr. and Alida Livingston of the Livingston family. His maternal grandparents were Abraham Schermerhorn, a wealthy merchant, and socialite Helen Van Courtlandt White. He was also a nephew of financier and philanthropist John Jacob Astor III, and grandnephew of occasional poet John Jacob Astor, Jr. His sister Helen's husband was diplomat James Roosevelt "Rosey" Roosevelt, half-brother of President Franklin Delano Roosevelt of the Roosevelt family. Another sister, Carrie, a noted philanthropist, was the wife of Marshall Orme Wilson (brother of banker Richard Thornton Wilson, Jr. and socialite Grace
John Jacob Astor III John Jacob Astor III John Jacob Astor III (June 10, 1822 – February 22, 1890) was an American financier, philanthropist and a soldier during the American Civil War. He was a prominent member of the Astor family, becoming the wealthiest family member in his generation and the founder of their English branch. Astor was the eldest son of real estate businessman William Backhouse Astor, Sr. (1792–1875) and Margaret Alida Rebecca Armstrong (1800–1872). His younger brother, businessman William Backhouse Astor, Jr. (1829–1892), became the patriarch of the male line of American Astors. His paternal grandparents were fur-trader John Jacob Astor (1763–1848)