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
Caroline Schermerhorn Astor "the Mrs. Astor." With the death of John Jacob Astor III in 1890, William Waldorf Astor had inherited his father's share of the Astor holdings and, titularly, became the head of the Astor family. In his mind, this made Mamie ""The" Mrs. Astor." However, Mamie was eighteen years younger than Lina and lacked Lina's social power. His further attempts at challenging Lina's preeminence in New York society, however, were thwarted, and he soon moved with his family to England, where he later became a viscount. In retaliation for his aunt's intransigence, William Waldorf Astor had his father's house torn down