This was the name of a 9th-century ruler of Bulgaria. It was also borne by an 11th-century grand prince of Kyiv, Vladimir the Great, who is venerated as a saint because of his efforts to Christianize his realm. Other notable bearers include the revolutionary and first leader of the Soviet state Vladimir Lenin (1870-1924), the Russian author Vladimir Nabokov (1899-1977), and the Russian president and prime minister Vladimir Putin (1952-).
A famous bearer of the name was the English courtier, poet and explorer Walter Raleigh (1552-1618). It was also borne by Walter Scott (1771-1832), a Scottish novelist who wrote Ivanhoe and other notable works.
This name 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 (called Wilhelm in German, Guillaume in French and Guglielmo in Italian). 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).
In the American rankings (since 1880) this name has never been out of the top 20, making it one of the most consistently popular names (although it has never reached the top rank). In modern times its short form, Liam, has periodically been more popular than William itself, in the United Kingdom in the 1990s and the United States in the 2010s.