Unfortunately I cannot help you with your direct connection, but I do have a feeling that your Beisel might be a Bichsel. My maiden name is Bixler and I have gone back to the 1500s where they spelled it Bichsel. I did look and did not find a Catherine Bichsel or an Emanuel Derk in my data base. Good luck, and let me know if I can be of further help. Rhonda