Billy

Short form of WILLIAM. This spelling was first used in the 19th century. The change in the initial consonant may have been influenced by an earlier Irish pronunciation of the name. Famous bearers include basketball player Bill Russell (1934-), comedian Bill Cosby (1937-), American president Bill Clinton (1946-), and Microsoft founder Bill Gates (1955-).

From the Germanic name Willahelm, which was composed of the elements wil "will, desire" and helm "helmet, protection". Saint William of Gellone was an 8th-century cousin of Charlemagne who became a monk. The name was common among the Normans, and it became extremely popular in England after William the Conqueror was recognized as the first Norman king of England in the 11th century. It was later borne by three other English kings, as well as rulers of Scotland, Sicily (of Norman origin), the Netherlands and Prussia.

Other famous bearers include William Wallace, a 13th-century Scottish hero, and William Tell, a legendary 14th-century Swiss hero. In the literary world it was borne by dramatist William Shakespeare (1564-1616), poet William Blake (1757-1827), poet William Wordsworth (1770-1850), dramatist William Butler Yeats (1865-1939), author William Faulkner (1897-1962), and author William S. Burroughs (1914-1997).