Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
PICKMAN
As described in historical dictionaries
Patronymica Britannica (1860)
PICKMAN. 1. A pike-man; foot soldier. Tlie arms contain pole-axes. 2. A man who draws up coals from a mine in ' picks ' or baskets. Cheshire.