Ryan served in the United States Navy during World War II under Admiral James Forrestal.
The Directors of EDC included Ryan, Frederic W. Lincoln IV, who married into the Rockefeller family, and Morehead Patterson of American Machine and Foundry (AMF).
[13][14] In 1935, Ryan was introduced to Countess Maria Anna Paula Ferdinandine von Wurmbrand-Stuppach (1914–2003), known as Etti, by Prince Chlodwig Hohenlohe.
[11] Jean, whose younger half-brother was actor James Harder, attended the Ethel Walker School in Simsbury, Connecticut and at the time of their marriage, served on the staff of the Civic Information Bureau.
Together, they were the parents of: In 1949, he purchased The Cliffs, a forty-three-acre estate in Oyster Bay held by the Beekman family for more than a century.
"[1][27] After a funeral at St. Jean Baptiste Roman Catholic Church, located on Lexington Avenue at 76th Street, he was buried in the family plot at St. Andrew-on-Hudson in Poughkeepsie, New York.