Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
CADELL
As described in historical dictionaries
Patronymica Britannica (1860)
CADELL. CADDELL. 1. (Welsh.) Warlike, stout. 2. Probably a corruption of Caldwell. An ancient family, Caldwell of that Ilk, flourished in co. Renfrew, down to the ejid of the XVII. century.