Hi, thanks. I should have been more clear. Via MyHeritage, FamilySearch, Census records, Korean War records, Birth records, newspaper clippings, etc. I have built my trees on MyHeritage (I'm a Premium Member) and FamilySearch. I know every bit of his information including his University, his PhD, his career, his published works, I know his siblings, parents, first wife, second wife and those children...I lose the trail in the early 20th and late 19th centuries, thus my question. I'm looking for any trail and any potential paternal link. My DNA relatives thus far are maternal and through King Richard III.