Have you written to any other profile managers involved and discussed your concerns? It's not appropriate to make changes on WikiTree just because your DNA test doesn't support what has already been entered. It would be okay to add comments to the appropriate profiles explaining what you're thinking, and ask for suggestions/comments from others. You might want to check the Wiki IDs you've entered in your question. Julius Beard is Beard-537, not Beard-539. That seems to be adding confusion to your question. Also, it would be okay to contact a Witherspoon descendant about comparing DNA even if you haven't changed the information on WikiTree. The general procedure for using DNA on WikiTree is that we use it to confirm paper trails, not to create paper trails based only on DNA evidence.