E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Kid (A).
A young child. A facetious formation from the Anglo-Saxon ci[l]d, a child. The l is often silent, as in calm, half, golf, etc. At one time fault was prononnced faut.
1
Are these your own kids? I inquired presently. Yes, two of them: I have six, you know.H. A. Beers: Century Magazine, June, 1883, p. 282.