[zilti]

To my knowledge, Oberon was named after Oberon, the king of elfs.

[eterps]

The information provided in the literature on Oberon contradicts this claim. Furthermore, the moon is depicted on the covers of some books about it.

[madcaptenor]

Worth mentioning here that some moons of Uranus are named after Shakespeare characters - the moon is named after Shakespeare's depiction of Oberon in A Midsummer Night's Dream.