William Loftus

(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 (Yorkshire): habitational name from Loftus in Cleveland, Lofthouse in West Yorkshire, or Loftsome in East Yorkshire. All are named from Old Norse lopt ‘loft’, ‘upper storey’ + hús ‘house’, the last being derived from the dative plural form, húsum. Houses built with an upper storey (which was normally used for the storage of produce during the winter) were a considerable rarity among the ordinary people of the Middle Ages.