(John) Calvin 1872-1933; 30th president of the U.S. (1923-29)
See Coolidge in American Heritage Dictionary 4
First lady of the United States (1923-1929) as the wife of President Calvin Coolidge. She was known for her outgoing manner.
The 30th President of the United States (1923-1929), who took office after the death of Warren G. Harding. A strong supporter of business, he encouraged speculation that led to a stock market boom in the 1920s, followed by economic collapse.