I am currently trying a free version of BanyanDNA to explore some possibilities on the generation of connection for the Pennsylvania O'Brien branch that is connected in some way to my 3rd-great-grandfather John O'Brien. I tried a similar approach using WATO around this time last year.
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| BanyanDNA. |
Using a tree with John O'Brien as a father of a mystery son born 1807-1829, who was the father of James O'Brien (1843), the head of the Pennsylvania O'Brien group, returned really promising possible results.
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| BanyanDNA validation calculation. |
As someone born in the early 1790s, it does seem likely that John O'Brien had a family before he arrived in La Salle County, Illinois about 1850. James O'Brien's 1914 death certificate says that James' father was also named James.
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