Re: Preston Dolphus O'BRIANT
I'm 99% certain he's one and the same based on process of elimination, deduction and following/studying the paper trails. I don't know if your involved with the DNA genealogy testing research for the O'B lineages but that would be a certainty.
Based on my research and the resources verified with this family group I'm going to connect the dots with Calvin Lee O'Briant - Anna Iva Dixon being the parents but will follow up to be on the look out for further resources when the time permits.
What 1st caught my eye was the name pattern...daughters: Anna Clara & Iva Lucille O'BRIANT and the coincidence to Calvin Lee O'BRIANT's 1st wife Anna Iva DIXON
I'm always on the look out researching O'Br* in my quest to research beyond our forefather Patrick O'Brian b. 1740.
I find so many clues become available when least expected when looking into the surrounding families of the individual I may be stuck on.
For instance while reviewing land deeds and such for Dennis O'Briant, Sr in Caswell Co., NC, I happened across Calvin's 3rd wife "widow" Emma Manly-O'Briant residing w/her sister Mollie B. Manly-Page then after digging further found out her given name is Lucy Emma Manly, d/o George W. Manly + Mary A. Page and that widow Lucy Emma Manly-O'Briant died/buried in Yanceyville, Caswell Co., NC.
Perseverance is the key and to look beyond the center.