For Kuhlen there are 70 on Yasni with different names.
Among the most common last names on Yasni Kuhlen is on position 4457.
The name of the Lower Rhine Kuhlen comes from the lower Rhine manor "diggin, Kaul, kauhlen, couler," which belonged to the abbey Knechtsteden later. The "Honnschaftsname" that appears in Electoral Cologne cards yet, is now gone (brown coal mining?). References I will submit yet.
(Sent from: Dr. Franz-Josef Kuhlen, geb. 7.1.1949, in Willich/Rhld., jetzt 61191 Rosbach)