In Black Horse Alley, Fleet Street, at its northern end, in Farringdon Ward Without (P.C. 1732-Elmes, 1831).
Lockie says it communicated with Fleet Market.
"Hart Court" in O. and M. 1677.
Described on a tradesman's token issued 1649-72 as "Harpe Alley end at Ditch side" (Burn, 98).
Perhaps = Harp Alley, Farringdon Street.
A Dictionary of London. Henry A Harben. 1918.