See The Fleet. So called as early as the 13th century.
Described by Hatton (1708) as in his time a spacious street and indeed like two large streets, divided by the ditch. A fine market house for corn there, erected about 1703.
In Strype's maps shown extending from Ludgate Hill south to the Thames on the western boundary of Farringdon Ward Within.
The portion between Holborn Bridge and Fleet Street was arched over 1737.
A Dictionary of London. Henry A Harben. 1918.