William Jordan

(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, French, German, Polish, and Slovenian; Spanish and Hungarian (Jordán): from the Christian baptismal name Jordan. This is taken from the name of the river Jordan (Hebrew Yarden, a derivative of yarad ‘to go down’, i.e. to the Dead Sea). At the time of the Crusades it was common practice for crusaders and pilgrims to bring back flasks of water from the river in which John the Baptist had baptized people, including Christ himself, and to use it in the christening of their own children. As a result Jordan became quite a common personal name.