Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
RIDEOUT
As described in historical dictionaries
Patronymica Britannica (1860)
RIDEOUT. Possibly from redouht, a military fortification. Fr. redu'it ; Ital. ?■?dotto; Span, rcduto. The H.R. Ridhut Avill, however, hardly bend to this etymology.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English