Stráhek the Stout retreated after encountering a wizard in Thornholt while collecting supplies.
'The Wizard! I saw him while collecting wood in Thornholt. He beckoned me closer, but I know better than to trust a strange wizard among the trees. He is dangerous, he must be! I, Stráhek the Stout, have too many expeditions to go on and wealth to gain to meet my end at the hands of some mad wizard!
'You may go see what he wants, if you wish to throw your life away. Not I!'
You should search the Thornholt woods, south of Skarháld, for the odd wizard Stráhek the Stout encountered.
The wizard stands among the wood of Thornholt, south of Skarháld.
You should talk to the not so odd, actually familiar wizard in the woods.