Before ‘Ghost in Vermont’ -the historical oc

They are my original characters.
The world setting settled in old Spanish Empire.
Osvaldo was the King.
Antonio was his younger brother.
Lorenzo was the ambassador from Italy.
After a series of events happened, Antonio refused to die. He became an old ghost wandering in the world, finally he possessed on one of the main character from ‘Ghost in Vermont’
And the partner in the new story helped Antonio discovered the truth of his death from hundreds years ago.