William Miller

(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 and Scottish: occupational name for a miller. The standard modern vocabulary word represents the northern Middle English term, an agent derivative of mille ‘mill’, reinforced by Old Norse mylnari (see Milner). In southern, western, and central England Millward (literally, ‘mill keeper’) was the usual term. The American surname has absorbed many cognate surnames from other European languages, for example French Meunier, Dumoulin, Demoulins, and Moulin; German Mueller; Dutch Molenaar; Italian Molinaro; Spanish Molinero; Hungarian Molnár; Slavic Mlinar, etc.