Ava Alice Muriel Astor (July 7, 1902 - July 19, 1956) was the daughter of John Jacob Astor IV and Ava Lowle Willing and sister of Vincent Astor.
Alice Astor was born on July 7, 1902 and was the only daughter of John Jacob Astor IV and Ava Lowle Willing. Her grandparents on her paternal side were Mr. and Mrs. William Astor of New York City.
Alice Astor married Prince Serge Obolensky on July 24, 1924 in the Savoy Chapel in London. The marriage was considered the event of the season in England that year. Her brother Vincent gave her a Palladian Revival stone residence on his estate near Rhinebeck, New York. The house was north of his own "Ferncliff Casin" ("Astor Courts") and also overlooked the Hudson River. Alice named it "Marienhuh" and retained it through her life. Out of this marriage, a son, Prince Ivan Obolensky, was born in London in May 1925. The couple later had a daughter, Sylvia Obolensky.
After their divorce, Alice married Raimund Hoffmann, Edler von Hofmannsthal (1906 - 20 March 1974), the son of Hugo von Hofmannsthal. The couple was married on January 21, 1933, in the city court of Newark, New Jersey.