South out of Great Tower Street to Lower Thames Street (P.O. Directory). In Tower Ward.
Earliest mention: "Harpe Lane," 34 H. VIII. 1543 (L. and P. H. VIII. XVIII. Pt. 1, p. 129).
Other name : "Hart lane" (S.135).
"Hart lane," called at first "Harp Lane," 1657 (Howel, p. 49,).
There was a messuage with a garden in the parish of St. Dunstan in the East in Tower Street in 1543 called "le Harpe" adjoining Harpe lane, giving name to the lane.
It is interesting to note that there is now at No. 13 a public house called the "Harp," which might conceivably be on the site of part of the garden of this messuage see L. and P. H. VIII. D.S. Vol. XVIII. Pt. 1, p. 129).
A Dictionary of London. Henry A Harben. 1918.