Oberon

Oberon () is a king of the fairies in medieval and Renaissance literature. He is best known as a character in William Shakespeare's play "A Midsummer Night's Dream", in which he is King of the Fairies and spouse of Titania, Queen of the Fairies.
Etymology.
Oberon is derived from Alberich (from Old High German "alb-" "elf" and "-rîh-", "ruler", "king"), the name of a dwarf from Germanic mythology. In the "Nibelungenlied", a Burgundian poem written around the turn of the 13th century, Alberich guards the treasure of the Nibelungen, but is overcome by Siegfried.
French heroic song.
The name Oberon is first attested to in the early 13th century "chanson de geste" entitled "Les Prouesses et faitz du noble Huon de Bordeaux", wherein it refers to an elven man of the forest encountered by the eponymous hero. Huon, son of Seguin count of Bordeaux, passed through the forest inhabited by Oberon. He was warned by a hermit not to speak to Oberon, but his courtesy had him answer Oberon's greetings and so gain his aid in his quest. Huon had murdered Charlot, the Emperor's son, in self-defense, and so he must visit the court of the amir of Babylon and perform various feats to win a pardon. He succeeds only with Oberon's aid.
This elf is dwarfish in height, though very handsome. He explains that, at his christening, an offended fairy cursed him to dwarfish height (an example of the wicked fairy godmother folklore motif) but relented and gave him great beauty as compensation. Alberich features as a dwarf in the "Nibelungen"; the dwarfish height was thus explained.
The real Seguin was Count of Bordeaux under Louis the Pious in 839 and died fighting against the Normans in 845. Charles l'Enfant, a son of Charles the Bald, died in 866 of wounds inflicted by a certain "Aubouin" in the circumstances of an ambush similar to the "Charlot" of the story. Thus, Oberon appears in a 13th-century French courtly fantasy that is based on a shred of 9th century fact. He is given some Celtic trappings, such as a magical cup (similar to the Holy Grail or the cornucopia) that is ever full for the virtuous. "The magic cup supplied their evening meal; for such was its virtue that it afforded not only wine, but more solid fare when desired", according to Thomas Bulfinch. In this story, he is said to be the child of Morgan le Fay and Julius Caesar.
A manuscript of the romance in the city of Turin contains a prologue to the story of "Huon de Bordeaux" in the shape of a separate romance of Auberon and four sequels and there are later French versions as well.
Shakespeare saw or heard of the French heroic song through the translation of John Bourchier, Lord Berners, called "Huon of Burdeuxe". In Philip Henslowe's diary, there is a note of a performance of a play "Hewen of Burdocize" on 28 December 1593.
"A Midsummer Night's Dream".
In William Shakespeare's "A Midsummer Night's Dream", written in 1595/96, Oberon is the king of all of the fairies and is engaged in a dispute with his wife Titania, the fairy queen. They are arguing over custody of a child whom Oberon wants to raise to be his henchman. Titania wants to keep and raise the child for the sake of her mortal friend and follower who died giving birth to him.
Because Oberon and Titania are both powerful spirits connected to nature, their feuding disrupts the weather. Titania describes the consequences of their fighting:
Oberon tricks Titania into giving him back the child using the juice from a special flower that makes you "madly dote upon the next live thing that it sees". The flower was accidentally struck by Cupid's arrow when he attempted to shoot a young maiden in a field, instead infusing the flower with love. Oberon sends his servant, Puck, to fetch the flower, which he does successfully.
Furious that Titania will not give him the child, he puts juice from a magical flower into her eyes while she is asleep. The effect of the juice will cause Titania to fall in love with the first live thing she sees. Titania awakens and finds herself madly in love with Bottom, an actor from the rude mechanicals whose head was just transformed into that of a donkey, thanks to a curse from Puck.
Meanwhile, two couples have entered the forest: lovers Hermia and Lysander are pursued by Demetrius, who also loves Hermia, and Helena, who loves Demetrius. Oberon witnesses Demetrius rejecting Helena, admires her amorous determination, and decides to help her. He sends Puck to put some of the juice in Demetrius's eyes, describing him as “a youth in Athenian clothing”, to make him fall in love with Helena. Puck finds Lysander – who is also a youth wearing Athenian clothing – and puts the love potion on Lysander's eyes. When Lysander wakes, he sees Helena first and falls in love with her. Meanwhile, Demetrius has also been anointed with the flower and awakes to see Helena, pursued by Lysander, and a fight breaks out between the two young men. Oberon is furious with Puck and casts a sleeping spell on the forest, making Puck reverse the potion on Lysander, admonishing Puck to not reverse the effects on Demetrius. Both couples awake and begin the journey back to Athens.
Oberon now looks upon Titania and her lover, Bottom, and feels sorry for what he has done. He reverses the spell using a magic herb. When she wakes, she is confused, thinking that she had a dream. Oberon explains that the dream was real and the two reunite happily. They then return to Athens in the epilogue to bless the couples, becoming once again the benevolent fairy king and queen.
Other historical and cultural references.
A fanciful etymology was given for the name "Oberon" by Charles Mackay in his book "The Gaelic Etymology of the Languages of Western Europe" along with many other theories on words found in the English language that have not found mainstream acceptance.