It reads as follows:
"The Zakarum high priests in Kurast proclaimed Leoric king of Khanduras many years ago. He ruled well until Diablo's influence drove him mad, and the loyal knight Lachdanan was forced to slay him. Afterward, Diablo himself raised Leoric from the dead as the Skeleton King until the monarch's son Aidan vanquished him."
— Deckard Cain(unsourced)