Between Snow Hill and Newgate Street, in Farringdon Ward Without (P.C. 1732-Boyle, 1799).
Former name : "Hart Street" (Hatton, 1708).
Afterwards called Snow Hill, now Holborn Viaduct.
So called because it represents the shape of a human heart! (W. Stow, 1722).
More probably named after an owner or builder, or after the sign of the Hart.
A Dictionary of London. Henry A Harben. 1918.