Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
NICOL
As described in historical dictionaries
Patronymica Britannica (1860)
NICOL. 1. The patriarch of the Nicols, Macnicols, and Nicolsons, was Mackrj'cul or Gregall, lord of Assint, co. Sutherland, who flourished in the XII. cent. Skene thinks the clan Nicail of Gaelic origin. ii. 298. 2. See Nicholas.
Surname type: From given name or forename
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic