Haydon Street heads east from the Minories.
The earliest mention of Haydon Street seems to be on Greenwood’s map, 1827. Earlier forms of the streetname were "Heydons Yard" (1677). "Heydon Yard" (Rocque, 1746). "Haydon Yard" (Horwood, 1799).
The name is derived from the family of Heydon, who were well known in the district. Captain John Heydon occupied the Minories officially as Master of the Ordnance 1627-1642, and took a great interest in the precinct.