Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
DICKMAN
As described in historical dictionaries
Patronymica Britannica (1860)
DICKMAN. 1. From residence near a dyke, or possibly a constructor of dykes, locally called dicM. 2. The same as Dykeman.
Surname type: Occupational name
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English