I know this thread is a little stale, but I just discovered it so it's fresh to me!
Alice Astor was once married to Prince Serge Obolensky of Russia whose first wife, Catherine Yourievsky, was a daughter of Tsar Alexander II. Obolensky, one of many members of the Russian nobility impoverished by the Revolution, became a popular member of Cafe Society after his marriage to Alice Astor. They had two children. Later, after they divorced, Obolensky had a successful career in hotel management, managing, among other properties Colonel Astor's St. Regis in New York.
His autobiography, One Man in His Time, contains lots of Astor references and would be a great read for anyone interested in that family and that era.
Now a question. Does anyone know a descendant of J.J. by the name of Jackie Astor? My parents met this attractive woman in about 1978 on a QE2 crossing. They were introduced by the Chief Engineer who was hosting a party in his cabin. Of course my parents had their picture made with her for my benefit!