Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
CHAD
As described in historical dictionaries
Patronymica Britannica (1860)
CHAD. CPIADS. The A-Sax. personal name, rendered illustrious in England by St. Chad or Cedde, third bishop of Lichfield, in the VII. century.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English