North out of White Street, Houndsditch. In Portsoken Ward (Horwood, 1799-O.S. 25 in. 1880).
Former name: " Black Horse Yard," Harrow Alley (O. and M. 1677-Rocque, 1746).
Cleared away for Met. Railway extensions (O.S. 1894-6).
A Dictionary of London. Henry A Harben. 1918.