Walter Alison Phillips, 1911 Encyclopædia Britannica, Volume 27… (1911)
“ At the outset, “valet” had meant no more than “youth” or “boy.” Thus Wace in the Roman de Rou (III. v. 2903) , speaking of William the Conqueror, says: Guillaume fu vadlet petiz (“William was a little boy”) . The various developments of the word are closely parallel with those of some of its synonyms. Youth suggested both strength and service, the qualifications for nobility in a primitive society, where service in arms was the title to rank. ”
