Owyl Soriason
Look, I'm really desperate to make it clear to my father that he is wrong and I'm right. If I could impress him with rare archeological knowledge, it would certainly change his mind. I know where to get the book I need, but I can't get it without the help of a third party. If you wanted to help me, I'd be prepared to do you a great service.
Oh? You want the secret of the spell for the orb of Fir Bolg? Hmm ... I will help, but you must not tell anyone, and if the gem disappears, I will know it's your handiwork and won't hesitate to report you.
Deal? Perfect! The spellbook I want is in the ruins controlled by the Molin family. I will show you where it is on your map.
Vinard's Grimoire
The secret of the Soriason spell