I have two marriages which I think are both for John, 1st to Grace Brinson in 1813 at Blandford, they had 5 children. Grace died in 1825 and John married again to Hannah Old in Melcome Regis in 1826. It is possible that Hannah's maiden surname was Bartlett. They had 4 children including Sophia who is my 3x great grandmother.
I'd be interested to know how your friend and I are related. I have done a DNA test which is registered on Ancestry and MyHeritage, if they are on there too. Feel free to send me a direct message if you want to talk details.