What we seem to have is a farm name with a grammatical form presuming a standard only found among farms cleared in the Middle Ages, and likely around the 12th century. But the Grane farm was not cleared before the mid-17th century and there is otherwise nothing to suggest a prior settlement. Thus we find a basic disparity without any easy explanation. Of course farm names sometimes follow environmental descriptions given in the vernacular of the time, but it is quite difficult to see what environmental aspect would yield the name form of "Grane" in the speech of the 17th century.