A wharf on the Thames so called at the south end of Haywharf Lane, now Campion Lane, in Dowgate Ward.
Earliest mention: 19 H. III. "del Heywarf " (Anc. Deeds, A. 1791).
Other forms : "La Heywarwe," 1296 (Ct. H.W. I. 128). "le Heghwharf," 1331-2 (ib. 373). "Heywharf," 12 H. VII. (Lond. I. p.m. I. 13).
Probably used for the loading and unloading of hay from early times.
A Dictionary of London. Henry A Harben. 1918.