Constanza Manuel of Villena's Throne

Origin
Constance of Penafiel was the daughter of the Duke of Penafiel when she was married to future Portuguese King Alfonso XI of Castille; both were children at the time. Constance then remarried Peter I of Portugal out of mistreatment by her first husband. When she arrived in Lisbon, Peter fell in love with her lady-in-waiting, Ines de Castro; they had an affair that lasted until Constance’s death.

Effects
It is highly sensitive to the Crowns of Ines and Pedro and will react strongly when either one is nearby.

When the crown of Pedro is united with Ines' and removed from the tomb, anyone placed on the throne becomes locked in a cycle of misery and dejection, literally wasting away in their own guilt and regrets.

When the crown of Ines de Castro comes into the vicinity of the throne, it entraps anyone who sits in the chair with ten times as much as emotional torment and irrational fear as the chair would release normally, where they question their spirit and existence.