There are a number of pre-1500 Danish merges awaiting completion. However, I believe most of them have the surnames incorrect. Danish patronymic naming should have the father's first name followed by "sen" for son and "datter" for daughter. See https://www.nordicnames.de/wiki/Danish_Surnames
Most of the pending merges have westernized spelling and use "son" and "dotter" in the surname rather than the correct spelling. Some of the males have an extra letter 's' in the surname.
Given that the merging instructions state: "Do not complete this merge unless Surname-1 is the correct Last Name at Birth. If Surname-2 is correct, click here to reverse the merge. If neither is correct, change the Last Name at Birth on Surname-1 before doing the merge" I am unable to complete the merges as I can not change the surnames.
I don't see a Danish project, but did notify the profile managers at the free-space page for Scandinavian Nobility about the issue in one particular case. I'm not Danish at all, but was working as an arborist to clear some pre-1500 pending merges and encountered this problem. I'm mainly posting this so that those interested in these early Danish profiles are alerted to the issues.
Edited to add that care must be taken as Swedish names do end in "dotter" and "son".