Testing BanyanDNA

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.

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.

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.