Tia Dalma

Tia Dalma, also known as Calypso was the goddess of the sea, daughter of Atlas and lover of Davy Jones. She was the one who sent Bilbo to their world via the sea and later resurrected Thorin Oakenshield, knowing both of them would be the key to releasing her.

History
Originally the goddess Calypso, she was the lover of Davy Jones and gave him the duty to watch over those lost at sea and had him serve for ten years. When Jones went on shore, Calypso remained unfaithful to him and caused him to bind her into Human form for all eternity. However, there was a way to reverse it by re-performing the ritual used to bind Calypso at first.