Hobnail
a nail with enlarged head, usually domed, for sole protection. [Thornton/Swann, 1983]
OED2
1. A nail with massive head and short tang, used for protecting the
soles of heavy boots and shoes.
1594 1st Pt. Contention (1843) 64, I beseech God thou maist fall into some
smiths hand and be turn'd to hobnailes.
Did they Use Hobnails in the Middle Ages?
Maybe/Maybe not.
Archaeological evidence:
There is no archaeological information that says they used them after the fall of Rome,
and before the early 1500s (and dates that early are arguable). There are plenty of
examples of soles left by the Romans that show evidence of hobnails, but none from the
middle era. There is one example of a patten from London [TL 74
[368]<1258>, Group G15, c.1440] that has an extra layer of leather nailed to an
earlier patten that was stitched together. This is clearly a repair though, as the
wear on the heel appears beneath the repair. Also, hobnails both in the Roman era,
as well as after the 16th century, were not used for construction. Clinch nails were.
Unfortunately, since I have not actually examined this patten, it is not
clear to me if the nails used here are flat headed or rounded, and how deeply pressed into
the leather the head is. However, it is unlikely that these are hobnails.
(illustration after Mitford).
Artistic evidence:
None of the artwork from the medieval period that I know of depicts hobnails, of course
this does not mean that they weren't used.
Literary Evidence:
There are two literary references that could be interpreted as referring to hobnails
(or to other things completely):
Alexandri Neckam De naturis rerum. There is a description of what someone
who is to travel by horse will need, and describes "shoes that are well fastened with
with iron nails". It is likely, however, this refers to the horse's shoes.
"Piers the Plowman's Crede", line 424. "With his knopped schon
clouted full thykke" The point being the definition of "knopped",
which an examination of the MED tells us is "knobbed", or knobby, gnarled,
bumpy, lumpy, thickened, calloused, or bark-like. Although this is sometimes
translated as "With his lumpy shoes stuffed with rags" (See Piers the
Plowman's Crede, Edited by James Dean. Originally Published in Six
Ecclesiastical Satires. Kalamazoo, Michigan: Western Michigan University for
TEAMS, 1991 http://www.lib.rochester.edu/camelot/teams/crede.htm#f39)
This could refer to the patches on the shoes (the usual definition of
'clouted'), or hobnails, or something else entirely.