The town takes its name from a monastery situated where the River Yonne flows into the River Seine. It was in Montereau that John the Fearless, Duke of Burgundy and co-regent of the Throne, was murdered in 1419. The episode led to the Treaty of Troyes when the country fell under English rule in 1420. On 18 February 1814, Napoleon fought his last battles against the Prussians and Austrians at Montereau. The town, famous for its earthenware, is now part of the suburbs of the capital.