Hi--I have looked at Samuel Morris/Rebecca McDonald before but have not found any connections yet. I have not looked into Clement/Clemuel Morris. It would be great if we could find a connection. As you can see from previous posts, I have been trying to put Frisby and Mahlon's family together for a long time. So far have been able to confirm that Frisby and Mahlon were brothers. Documents related to bounty land Frisby received in about 1850 lists Mahlon as a brother.
I have not found anything else that would connect Samuel, Clemuel, or Carville. I really think Carville must be related, but have not found any proof.
Sorry I don't really have any new info. Thanks for your post :-)