Confirming family with DNA matches

Question

I did my test through ancestry, the first 2 matches I recall popping up were my first cousin, and my great uncle? (My grandmothers brother) both on my moms side.

And then just recently got a match from my half first cousin (we have the same grandpa) and his daughter on my dads side.

I guess what Im asking is, are these relationships enough to mark my mother, father, paternal grandfather and maternal grandmother as confident?

Answer 1

Here is what the DNA Help page says about using a first-cousin to confirm either your mother or father; it doesn't address the situation of a half-first cousin, but I think that may not be close enough to mark your parent as confirmed with DNA:  

• If your match is a first cousin on your father's side you can confirm your relationship to your father and his relationships to both his parents. If your match is a first cousin on your mother's side you can confirm your relationship to your mother and her relationships to both her parents.

Here's the link to the full DNA Confirmation Help page:

Help:DNA Confirmation (wikitree.com)

Comments

I'm not the downvoter, but I will say I think the supposition here is incorrect. Since the match is a half 1st cousin,  you can mark your father and his father as confirmed, if the amount of shared DNA is consistent with that relationship.

Answer 2

There is a handy app to help you create source citations for your DNA confirmation:  DNA Confirmation Citation Maker