When was John Gardner Coolidge's aunt born?
Isabella Stewart Gardner Isabella Stewart Gardner (April 14, 1840 – July 17, 1924) was a leading American art collector, philanthropist, and patron of the arts. She founded the Isabella Stewart Gardner Museum in Boston.
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.