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-).
Due to the saint's popularity, the name came into general use in medieval Europe, especially in Spain and France. It was also borne by a 16th-century king of Portugal who died in a crusade against Morocco.
As an English name, it became popular due to the Fleetwood Mac song Rhiannon (1976), especially in the United Kingdom and Australia.
In England the name became rare after the Middle Ages, but it was revived in the 19th century, more commonly in the spelling Beatrice. Famous bearers include the British author and illustrator Beatrix Potter (1866-1943), the creator of Peter Rabbit, and Beatrix of the Netherlands (1938-), the former queen.