Corellon
The Elven deity, Corellon, is worshipped as part of the monotheistic religion known as 'the Duty. This religion is followed by both High Elves and Wood Elves, who both believe that Corellon was the deity who led them (along with the Gnomes) to turn against their tyrannical masters, the Eladrin, and to flee the Feywild and settle on Oberon.
Corellon is usually depicted as an androgynous Elf, armed with a longsword and longbow and wearing a sky blue cloak over a suit of shining mithril armour. Corellon's skin and hair colour changes depending on whether his depiction is that of a High Elf or Wood Elf but is always shown with bright blue opalescent eyes.
Generally speaking, Corellon urges the Elven people to live a life of self-reliance, never expecting anyone to assist them, but also to freely give assistance where it is required. The appreciation of the function and beauty in the natural world is also a strong feature of the worship of Corellon and, indeed, of 'the Duty'.
Many (mostly non-Elven) people with a basic understanding of the teachings of Corellon often mistakenly see parallels with the deity Apollo. Whilst there may be some overlap between the two, due to the depiction and spheres of influence, they are not the same deity - Corellon is the embodiment of 'the Duty' and how it should be manifest by Elven worshippers, whereas Apollo is more about the spreading Imperial culture.