In this age of online DNA testing putting us in touch with numerous "DNA cousins", I have found that there is a good possibility that who we have come to know as my maternal grandfather (on paper, "Father A") might be someone other than who my maternal grandmother was married to.

But the odd thing is, there appears to be a large number of "DNA matches" of the suspected "Father B"...Over "60" DNA matches in common with Father B..., (at least two DNA matches as close as 2nd cousins). I happen to know the identity of Father B from my mother (who always suspected him to be her biological father), hence I was later able to enter his family tree and discover these numerous "mystery" DNA matches.

Father A seems to have only three "trace amounts" of DNA "cousin matches" (of course we don't know how many descendants of this ancestor have taken the DNA test, but we do know there are "numerous descendants").

How can this be? How can both my mother and I have seemingly inherited DNA from both Father A and Father B? Hence, my researching everything I can find about Microchimerism and Telegony.

Why isn't more known about this? I'm sure there would be many people (such as myself) willing to share the DNA data for further study. As a genealogist, I'd like to have answers to this matter without resorting to the expense of exhuming Father B's body and having an expensive DNA test procured, not to mention the costs of re-internment.

Thank you to anyone who reads this that can help me with answers to these questions. On a side note, it appears that my mother is showing signs of Alzheimers/Dementia at age 72.