1) West out of Aldersgate Street in Aldersgate Ward Without, south of Long Lane (Rocque, 1746-Boyle, 1799).
First mention: "Black Horse Alley" (O. and M. 1677-Strype, 1755).
2) West out of Old Change, in Castle Baynard Ward (O. and M. 1677-Boyle, 1799).
The site is now occupied by offices and business houses.
A Dictionary of London. Henry A Harben. 1918.