Deku Royal Family

The Fate of the Deku Royalty
The owl near Woodfall speaks of horror and terror destined to befall the Dekus, and says that the Deku were doomed to begin with. He also mentions that this was so ever since their deity (much like how the Zoras have Jabu-Jabu) went missing. The only hints towards who their deity could be is the manga for Majora's Mask, which states that Odolwa is their deity. It may also be the giant of Woodfall, given Tael's speech at the scene before entering the moon. Although the manga usually twists the stories, it is possible that this is correct, and that Majora created a clone of the god.