King Taranis, King of Light and Illusion
One of the two courts of the sidhe, the royalty of the fae. The Seelie court is the court of light and beauty.
The Seelie Court is said to be more into illusions than truth.
The Seelie Court is far more likely to ape human sensibilities than their counterparts in the Unseelie Court.
When first exiled from Europe, and after establishing a sithen in the US, the Seelie mound recognized Aisling as it's preferred king, not Taranis, for which Taranis banished him from the Seelie Court.