the gelert prince has the key because its his family crypt.

The thing is, that the werelupe necklace is in werelupe woods, and you don't need a
key.That basement thing in Meridell is locked, but you go behind the alley ways were you
chased that meericka and theres this door.When it says "knock on door" click the X button
and thos bandits open it and stuff.If this isn't enough information, i'll just post more
later.Hope I helped!