Urthemiel

Urthemiel, the Dragon of Beauty, was a draconic creature worshiped as the god of beauty in the Tevinter Imperium. Urthemiel was awakened by darkspawn and transformed into an Archdemon in 9:30 Dragon, shortly before the events in Dragon Age: Origins, which revolve around the Fifth Blight.

Among the ancient Tevinter people, Urthemiel was the fairest and most graceful of the Old Gods. His beauty is now a horrid mockery of the being he once was. If not religious canon of the Tevinters, at least some dragon cults believed Urthemiel sired a daughter, Urzara.

Background
There was a holiday dedicated to Urthemiel back in the times when the Old Gods were still widely revered. It was called "Urthalis" but this holiday is now known as Wintersend and is dedicated to the Maker. It is celebrated at the beginning of Pluitanis.