North out of Great Tower Street to Fenchurch Street at No. 42 (P.O. Directory). In Tower and Langbourne Wards.
Earliest mention: "Menechinelane," 1273-4 (Ct. H.W. I. 17).
Other forms of name : "Mengenelane," 1290-1 (ib. 95). "Mangonelane," 1291 (ib. 96). "Monechenelane," 1291 (ib. 101). "Menchenelane," 1294-5 (ib. 119). "Manionelane," 1295 (ib. 121) and 1311 (Cal. L. Bk. D. p. 77). "Menchonelane," 1304 (Ct. H.W. I. 162). "Manchonlane," 1306-7 (ib. 184). "Menionelane," 1312 (ib. 230). "Mangonelane," 1320 (ib. 288). "Mengonelane," 1321 (ib. 292). "Mengeoneslane," 1324 (ib. 309). "Mengeonlane," 1330 (ib. 361). "Myniounlane," 1349 (ib. 577). "Munchenlane," 1348-9 (ib. 528). "Monechunelane," 1349 (ib. 553). "Manchonelane," 36 Ed. III. (Ch. I. p.m. pt. 2, 71). "Minchonlane," 1393 (Ct. H.W. II. 299). "Mynchenlane," 1398-9 (ib. 337). "Mynchyn lane," 28 H. VIII. (Lond. I. p.m. Lond. and Midd. Arch. Soc. VII. (p. 55). "Mynsing Lane," 1601 (H. MSS. Com. Salisbury, XI. 315).
The A.S. word "mynechenu" = female of "munuc" = monk.
Halliwell in his Dictionary of Archaic and Provincial Words gives "Minch" = a nun, and it is suggested that this street derives its name through this word from the A.S. "mynechenu," the "mynchens" or nuns of St. Helens who held property there.
At the north-eastern end of this lane remains of a Roman bath, hypocaust, etc., have been found, and Roman pavements on the western side of the street.
A Dictionary of London. Henry A Harben. 1918.