(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.
Short forms: Will, Bill.
Pet forms: Willy, Willie, Billy.
Cognates: Irish: Uilliam. Scottish Gaelic: Uilleam. Welsh: Gwilym. German: Wilhelm. Dutch: Willem. Scandinavian: Vilhelm. French: Guillaume. Spanish: Guilermo. Catalan: Guillem. Portuguese: Guilherme. Italian: Guglielmo. Czech: Vilém. Slovenian: Viljem. Hungarian: Vilmos. Lithuanian: Vilhelmas. Latvian: Vilhelms.
English (of Norman origin): nickname denoting someone who behaved in a regal fashion or who had earned the title in some contest of skill or by presiding over festivities, from Old French rey, roy ‘king’. Occasionally this was used as a personal name.
English: nickname for a timid person, from Middle English ray ‘female roe deer’ or northern Middle English ray ‘roebuck’.
English: variant of Rye (1 and 2).
English: habitational name, a variant spelling of Wray.
Scottish: reduced and altered form of McRae.
French: from a noun derivative of Old French raier ‘to gush, stream, or pour’, hence a topographic name for someone who lived near a spring or rushing stream, or a habitational name from a place called Ray.
Indian: variant of Rai.