Akademik

Pentecost Lane
   North out of Newgate Street, leading to the Bagnio, in Farringdon Ward Within, in parish of St. Nicholas Shambles, afterwards Christ Church, Newgate Street (S. 314).
   First mention: " Pentecostelane," 1280 (Ct. H.W. I. 50).
   Other forms: " Pentecosteslane," 22 Ed. I. (West. Abbey MS. Parcel 44 (12)). Pestcostlane," 1361 (Ct. H.W. II. 63). " Penthecoste Lane," 1539 (L. and P. H. VIII. XIV. (2), p. 101). " Pintottes " alias " Penticotes Lane," 1594 (Lond. I. p.m. III. 179). Pincock Lane" (O. and M. 1677-Strype, 1755).
   See Roman Bath Street.
   Possibly named after the original owner and corrupted in course of time to "Pin-cock."

A Dictionary of London. . 1918.