I've already gotten an answer from Melissa (Warner-915) that James and Sarah are our mutual ancestors. She has confirmed that one of the son (Thomas) is her ancestor. I have requested she extend me trust on Thomas' profile so we can link/merge. She already knew about James and Sarah but had stopped entering info at Thomas' generation. So I thought that I would extend trust to her for James & Sarah's profiles. However, aside from adding her using the anonymous person form for trust, I can't figure out how to extend the trust to her. Somehow I had thought there would be a way to go into James and Sarah's profiles and just add Warner-915 to the trusted list. What am I missing? Thanks.
Looks like maybe Melissa's email address on Wikitree is not the same email address I have. Anyway when I enter her email address, wikitree kicks me into the anonymous form