Knute of Denmark pipes are said to be made by Karl Erik, see his listing herein.
Karl Erik Ottendahl was born in Aalborg in 1942, just a few miles from the very northernmost tip of Denmark. He began his career as a Lithographer as an apprentice in the craft at the age of 16. While working as an apprentice he began hand carving pipes as a hobby and to give as gifts to his more senior colleagues. He began his career making pipes for various labels in Denmark and the United States. Often he would make the higher grade pipes for a well known brand that was known for their midrange or low end pieces such as Wally Frank. While doing this he administered a factory of fifteen craftsmen. During this period he did make of some of his own handmade pipes, but he felt that the responsibility of managing the factory did not give him the freedom he wished he had.
Other brands confirmed to be from Karl Erik are: Champ of Denmark, HTL, Jobey Dansk, Knute, Golden Danish, Lars of Denmark, Larsen & Stigart (Copenhagen pipe shop), Shelburne, Sven Eghold and Wenhall (for Wenhall Pipes, New York), some Ben Wade and pipes marked IS and IIS.