West out of the Minories about the middle. In Portsoken Ward (O. and M. 1677-Boyle, 1799).
In Strype, ed. 1720, I. ii. 28 and map of Portsoken Ward, Black Horse Alley is shown further south, on the site of Crown Alley, Minories (q.v.).
The western side of the Minories seems to have been largely rebuilt towards the end of the 18th century, and many small courts were removed at that time.
See Nag's Head Alley, Minories.
A Dictionary of London. Henry A Harben. 1918.