When was John Gardner Coolidge's aunt born?
John Gardner Coolidge John Gardner Coolidge (July 4, 1863 – February 28, 1936) was an American collector, diplomat, author, and nephew of Isabella Stewart Gardner.
Harold Jefferson Coolidge, Sr. Harold Jefferson Coolidge (January 22, 1870 – July 31, 1934) was an American lawyer. He was the brother of Archibald Cary Coolidge and father of Harold Jefferson Coolidge, Jr.