Any Hallworth from Texas or Washington, USA from the early 20th Century?

Question

I'm adopted and have my biological mother's name and an alleged biological father's name. There is a picture of his grave in San Antonio Texas and current familysearch information shows he was born in Washington, USA. The trail gets very unclear in the late 19th Century. My DNA is on file.

Comments

If you have a picture of his grave and know his name, you could look him up at familysearch.org . If the tombstone has his date of birth and date of death, that would be more input at familysearch.org .

It's a free site. Was he born in the state of Washington or Washington D C?

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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.