Over time, the surname Summr has undergone some changes in its spelling or pronunciation.
The fact that there was no unified spelling for the surname Summr when the first surnames were formed allows us to find many surnames similar to Summr.
Errors in writing, voluntary changes by the bearers, modifications for language reasons... There are many reasons why the surname Summr may have undergone changes or modifications, and from those modifications, surnames similar to Summr may have appeared, as we can see.
Discerning whether the surname Summr or any of the surnames similar to Summr came first is not always easy. There are many reasons that could have led to the surname Summr being written or pronounced differently, giving rise to a new, different surname Summr with a common root.