In the 1800's in Denmark is it common to give children a last name that is different than the last name of their birth father?
The short answer is yes. You may find this article about the use of patronymics helpful. https://www.sa.dk/en/genealogy/danish-names/
Thank you so much for your prompt and thorough response!! The above link about patronymics took the mystery out of why Denmark surnames were so difficult to understand in the early to mis 1800's.
Happy to help @Tom Doody