Ava Lowle Lister, Baroness Ribblesdale (née Willing, later Astor; September 15, 1868 – June 9, 1958) was an American socialite.

[1] Ava Lowle Willing was born on September 15, 1868, in Newport, Rhode Island, to Edward Shippen Willing (1822–1906) and Alice Caroline Barton (1833–1903).

In 1909, after returning from England, Ava sued Jack for divorce on November 19, and four months later on March 5, 1910, the State of New York decreed in her favor.

While Vincent was in his second year at Harvard, Jack was on the maiden voyage of the RMS Titanic, and became one of the casualties while returning from his honeymoon with his new bride, Madeleine Talmage Force.

In June 1940, she returned to the United States on the liner SS President Roosevelt as a war refugee, reclaimed her American citizenship, and became known as Mrs. Ava Willing Ribblesdale.