Tommy, you found the others. I just went through the relationships and I agree that those are the other 2 that need to be sourced. I added Research Notes to state the relationships for George Washington's wife and Mary's family, which, I agree, is that they are 1st cousins.
One issue that will happen, I suspect, is that one of those PMs are inactive. When a merge is proposed, both PMs / Trusted List have 30 days to approve, reject or postpone a merge. If both profiles approve the merge before then, the last person approving can complete the merge, but they can close the 'merge' page and then anyone can complete it. If both PMs have not approved by 30 days, then it is given a 'default' approval. At that time anyone can complete the merge. Before completing any merge, the person doing that 'should' review the profiles, sources, check for other sources, if there are not clear enough sources before they complete the merge. The person completing the merge has to decide on which parents to use, if they don't match (we don't recommend a merge to be done until parents are the same), what dates / locations to use, if they are different, and what should be included in the biography, since the 'text' of both profiles is 'merged' together. Check the Help page on Merging. Arborists group works with many merges.
Discrepancies between profiles should be entered into a Research Notes section on a profile, such as Middle Name, birth location, etc., if needed.
Tommy, you started this question 'is this unsourced?' Once we found a duplicate, it did go off on a different tangent, but it also shows why sourcing can be so important on profiles, if a duplicate is found.
Hope this has helped.