The name Avalon has its roots in the Brythonic Celtic language, which was spoken in ancient Britain during the Iron Age and Roman eras. It is derived from the word "aval," meaning apple, and is believed to be a reference to the legendary Isle of Apples, a mythical island paradise associated with King Arthur and the Holy Grail.

The earliest recorded use of the name Avalon dates back to the 12th century, when it appeared in the writings of Geoffrey of Monmouth, a Welsh cleric and one of the first writers to describe the legendary tales of King Arthur. In his work "Historia Regum Britanniae" (History of the Kings of Britain), Monmouth refers to Avalon as the island where King Arthur was taken after being mortally wounded in battle.

Throughout the Middle Ages and Renaissance period, Avalon became a popular subject in Arthurian literature and folklore, with various authors and poets depicting it as a mystical realm of enchantment, healing, and eternal youth. One of the most famous references to Avalon is found in the 15th-century work "Le Morte d'Arthur" by Sir Thomas Malory, which recounts the legend of King Arthur and his knights of the Round Table.

While the name Avalon is primarily associated with Arthurian legends, it has also been used as a given name throughout history. One of the earliest recorded individuals with this name was Avalon Morell (1593-1657), an English politician and member of parliament during the English Civil War era.

Other notable figures with the name Avalon include Avalon Daggett (1826-1902), an American lawyer and politician who served as a member of the United States House of Representatives, and Avalon Bassett (1898-1986), an American stage and film actress who appeared in several Hollywood productions during the 1920s and 1930s.

In the realm of literature, Avalon Somerville (1858-1928) was an Irish novelist and playwright known for her works exploring social and political issues in Ireland, while Avalon Woodruff (1874-1944) was an American author and editor who contributed to numerous publications in the early 20th century.

More recently, Avalon Hubbard (1938-2021) was an American entrepreneur and philanthropist who founded the Hubbard Broadcasting Corporation, one of the largest privately-held broadcasting companies in the United States.