Ok my Y test suggests that I am connected to a different surname and I have no other direct males that tee in the tree where I need them to, to test and figure out if this is an ancient of modern connection. So I think the best route to figure out the maternal DNA line. My great grandfather's paternity is the subject in question. OK here is the scenario: I have 2 females I research with, one is connected though 2 maternal common ancestors though some family inter marrying, and they happen to be both of my greatgrandfather's grandmothers.
If we tested Mt DNA from my line and her line would the results be clear enough to suggest 2 recent common female ancestors, thereby proving both his lines? or would it be better to find someone on the paternal side we know we should only share 1 recent common female ancestor, thereby proving his paternity?
I have never seen any Mt DNA results so I am a little confused.