We have strong reason to believe we know who my aunt's half first cousin is. However, he is not matching her with autosomnal dna test on ancestry.
Its fair to say ok forget it but there are so many things that point that way.
Is it possible that its just not showing up?
He would be my half first cousin once removed.
Might he show up with me if i took a test?
Also it's his grandfather that is thought to be my dad's and aunt's grandfather. Obviously different grandmothers.