Clemenceau arrived in the United States after fleeing France due to involvement in radical political activism.He taught at a girls school in Stamford, Connecticut, which Mary Plummer attended. The two wed in 1869 and moved to France a year later. They had three children but separated in 1876.
Clemenceau had many mistresses, but when his wife took as her lover a tutor of their children, he had her put in jail and sent her back to America on a steamer third class. He divorced her, obtained custody of their children and had her stripped of her French nationality.