Text: Washington was named after President George Washington by an act of the United States Congress during the creation of Washington Territory in 1853. The territory was to be named ''Columbia'', for the Columbia River and the Columbia District, but Kentucky representative Richard H. Stanton found the name too similar to the District of Columbia (the national capital, itself containing the city of Washington), and proposed naming the new territory after President Washington. Washington is the only U.S. state named after a president.

Question: is washington the only state named after a president?
yes