Source: Greater Greater Washington
Today, Truxton Circle is a phantom circle. It used to sit at the intersection of North Capitol St., Florida Ave., and Q St. It was constructed in 1900 and named for Commodore Thomas Truxton. The decision to name the circle after him was made because the land on top of which it was built originally was owned by the Truxton family.
Truxton was born on Long Island in 1744 and is notable for being a naval officer in the early days of the U.S. Navy. He was appointed one of the first six commanders appointed to the navy by President George Washington to command the six original frigates: Chesapeake, Constitution, President, United States, Congress, and Constellation. Truxton was the first commander of the Constellation, and also commanded the President.
As a side note, Constitution, is the oldest commissioned naval vessel that’s still afloat. She sits in Boston harbor, and is regularly used for ceremonies.
Here is the Google Map of the neighborhood today.