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