You can find captain ralf to the south of stormfist castle. He's in the building there.

About Tingalf: have you told Markus that you found the goods? Or didn't you have that option? I told Markus, but didn't tell a guard. Then later,I accidently clicked on a guard there, and I had the option of telling about the stolen goods. So I told him, and to my surprise I got xp! hehe