William Allerton

(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: habitational name from any of several places so called. Allerton on Merseyside, Chapel Allerton in West Yorkshire, and others in West Yorkshire were named in Old English as alra tūn ‘settlement by the alders’. One in Somerset (Alwarditone in Domesday Book) is ‘Ælfweard's settlement’; one in West Yorkshire (Allerton Mauleverer, Alvertone in Domesday Book) is ‘Ælfhere's settlement’.