Heaps of Clues: Navigating DNA to Uncover Your Mystery Match 

Any small rural community with residents whose families have lived in the same area for 100+ years will have intertwining trees. My mother's two sisters married distant cousins to my father. My mother and brother-in-law are 5th cousins. My dad's first cousin married a woman who is related to him 2 ways via ancestor T, and a shared common ancestor W and C. That means their children are related to themselves 5 different ways. My mother's tree shows 9 ancestral couples in her tree more than once. My father's tree shows 4 ancestral couples in his tree more than once. This is a common occurrence anywhere in the US, especially in rural and small towns.

Hey, just a great video! Could you please share with us the links mentioned that were posted on the zoom chat?

I'm less than 10 minutes in at this point, so maybe it's answered later in the video, but why, if the possible candidates for MRCA were based soley on that shared match, were Alvah's parents considered but not Devin's parents?

How do I find my half-sister?