[MRussell]

Thank you all for your comments. I think a plan is emerging--maybe. I like the hypothetical questioning idea, and I'm going to see what his adoptive birth certificate says. Is this where it would say that he is adopted? I'm so new to this area of research.

A bit more history:
I have only met my father-in-law once, to introduce him to his first grandchild. He was instantly a wonderful grandfather. He has only had intermittent contact with my husband throughout his life. But, the grandchild and the genealogy search has brought the family closer together. My father-in-law has been supportive of my reasearch, lending me all the family photos, letters, bibles, etc. One of my fears is that if I tell him it might compromise our new relationship, especially his relationship with his grandson.

My husband was a bit disappointed that I told him about the adoption theory. His first comment was, "I wish you didn't tell me." Then he rebounded and said that at least his father, he, and our son are "related." My mom is adamantly against telling. She's of the it's-not-your-place school.

Thanks again for the help. It gives me a better perspective.
M