William Faulkner

(male) Probably the most successful of all the Old French names of Germanic origin that were introduced to England by the Normans. It is derived from Germanic wil ‘will, desire’ + helm ‘helmet, protection’. The fact that it was borne by the Conqueror himself does not seem to have inhibited its favour with the ‘conquered’ population: in the first century after the Conquest it was the commonest male name of all, and not only among the Normans. In the later Middle Ages it was overtaken by John, but continued to run second to that name until the 20th century, when the picture became more fragmented.

English: occupational name for someone who kept and trained falcons (a common feudal service). Falconry was a tremendously popular sport among the aristocracy in medieval Europe, and most great houses had their falconers. The surname could also have arisen as metonymic occupational name for someone who operated the siege gun known as a falcon.