Very rare as an American given name before 1980, it increased in popularity in the 1980s and 90s. It got a boost in 2004 after the debut of the television series Lost, which featured a character by this name.
Due to the renown of Saint Paul the name became common among early Christians. It was borne by a number of other early saints and six popes. In England it was relatively rare during the Middle Ages, but became more frequent beginning in the 17th century. In the United States it was in the top 20 names for boys from 1900 to 1968, while in the United Kingdom it was very popular from the 1950s to the 80s. It has also been heavily used in Germany and France and continues to be popular there, though it is currently on the decline in the English-speaking world.
A notable bearer was the American Revolutionary War figure Paul Revere (1735-1818), who warned of the advance of the British army. Famous bearers in the art world include the French impressionists Paul Cézanne (1839-1906) and Paul Gauguin (1848-1903), and the Swiss expressionist Paul Klee (1879-1940). It is borne by actor Paul Newman (1925-2008) and the musicians Paul Simon (1941-) and Paul McCartney (1942-). This is also the name of the legendary American lumberjack Paul Bunyan and the fictional Paul Atreides from Frank Herbert's novel Dune (1965).
This name was not regularly given to people until the 19th century [4][3]. It was used by George Eliot for a character in her novel Daniel Deronda (1876).
This name can also be given in reference to the city in Italy, as in the case of Florence Nightingale (1820-1910), who was born there to British parents. She was a nurse in military hospitals during the Crimean War and is usually considered the founder of modern nursing.
Because Elijah was a popular figure in medieval tales, and because his name was borne by a few early saints (who are usually known by the Latin form Elias), the name came into general use during the Middle Ages. In medieval England it was usually spelled Elis. It died out there by the 16th century, but it was revived by the Puritans in the form Elijah after the Protestant Reformation. The name became popular during the 1990s and 2000s, especially in America where it broke into the top ten in 2016.
In America, this name received boosts in popularity from main characters in the movies The Jackal (1997) and Leap Year (2010).
The most notable bearer of the name was Cyrus the Great, the founder of the Achaemenid Persian Empire in the 6th century BC. He is famous in the Old Testament for freeing the captive Jews and allowing them to return to Israel after his conquest of Babylon. As an English name, it first came into use among the Puritans after the Protestant Reformation.
This is also the name of an Irish county, which was itself probably derived from Irish clár meaning "plank, level surface".
In Britain the parallel form Alice, derived via Old French, has historically been more common than Adelaide, though this form did gain some currency in the 19th century due to the popularity of the German-born wife of King William IV, for whom the city of Adelaide in Australia was named in 1836.