I am interested in communicating with
cousins and anyone else with an interest in genealogy.
My family tree is at <https://www.ancestry.com/family-tree/tree/69994126/family?cfpid=42207044753&fpid=362135542164&usePUB>.
DNA testing is far more powerful than most people realize, especially when we collaborate (please bring your tests to GEDmatch.) You can't get very far with your own test alone. Recruit a group of siblings, aunts, and cousins to share though and major sections of chromosomes can be reconstructed for a great grandparent born 150 years ago. Next, by understanding the way chromosomes are recombined and passed on, we can discover grandparents of the great grandparent -- our 3rd-great grandparents -- sometimes with remarkable clarity. Many trees have been guessed wrong at this distance and can be corrected. Evidence from our chromosomes can be stronger than evidence from scant records.
It may be possible to confirm family relationships by comparing test results with John or other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
It is likely that these autosomal DNA test-takers will share DNA with John: