E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Codgers. Thackeray says, The Cisterciau lads call the poor brethren of the Charterhouse codds, adding, but I know not wherefore. (Turkish, kodjah, an old man or woman.) We say Well, old boy, without referring to age.
I say, do you know any of the old codds ? Colonel Newcome is going to be a codd.Nineteenth Century, October, 1893, p. 589.