Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
RIDDELL
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Local) From lands in the county of Yorkshire, formerly called the Ryedales.
Patronymica Britannica (1860)
RIDDELL. Of that Ilk, in the parish of Lilliesleaf, co. Roxburgh. There is a tradition of great antiquity, ascending to the VII. or VIII. century. See Lay of the Last Minstrel, notes — but documentary evidence goes back to the XII. only. Richard Basset, justiciar of England, temp. Hen. L, married the heiress of Riddell, and his eldest son assumed his mother's surname. Genealogists differ as to the extraction of the family. See Douglas's Baronage. Betham's Baronetage, Nisbet's Heraldry, &c.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Surname type: Location or geographical feature
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic