The daughter of Zeus, she was said to have sprung from his head fully grown after he impregnated and swallowed her mother Metis. Athena is associated with the olive tree and the owl.
This name also appears in southern Germanic legends (often spelled Perchta or Berchta) belonging to a goddess of animals and weaving.
In the Middle Ages this name was common in England due to the popularity of medieval tales about the Trojan War. It subsequently became rare, but was revived in the 20th century.
The name was originally used among early Christians in honour of the saint, as opposed to the classical character. In England it was commonly spelled Ellen during the Middle Ages, and the spelling Helen was not regularly used until after the Renaissance. A famous bearer was Helen Keller (1880-1968), an American author and lecturer who was both blind and deaf.
In the English-speaking world this name has been occasionally given since the early 20th century. It started rising in America after the variant Lorelai was used for the main character (and her daughter, nicknamed Rory) on the television series Gilmore Girls (2000-2007).
In Norse mythology Odin is the highest of the gods, presiding over war, wisdom and death. He is the husband of Frigg and resides in Valhalla, where warriors go after they are slain. He is usually depicted as a one-eyed older man, carrying two ravens on his shoulders who inform him of all the events of the world. At the time of Ragnarök, the final battle, it is told that he will be killed fighting the great wolf Fenrir.
In England, it began to be used as a given name after the Protestant Reformation. It was moderately common in the 19th century. It began to rise in popularity again in the late 1980s, probably helped along by characters on the American television shows Friends (1994-2004) and Charmed (1998-2006). It is currently much more common in the United Kingdom, Australia and New Zealand than the United States.
A moon of Saturn bears this name, in honour of the Titan.
As an English name, it became popular due to the Fleetwood Mac song Rhiannon (1976), especially in the United Kingdom and Australia.