"All sorts of terms are used to indicate this condition, but the word "bastard" is not used anything like so often as its various synonyms; this is as it should be, as the word (of doubtful etymology) is more properly applied to the "bye-blows" of the great than to the produce of proletarian promiscuity. The earliest known application of the term is to the Conqueror, who styled himself, "Ego Wilhelmus Cognomine Bastardus.""
January 1, 1970
https://en.wikiquote.org/wiki/Legitimacy_(family_law)