Your very welcome, sounds like you have done alot of research already on your family history. That is awesome it is amazing the things you can discover.
I think years ago, and talking more like 50+ years family histories were passed down more verbally from generation to generation. If someone wrote it down then at least today we have it. But you figure 50+ years ago no internet or email or social media. Our social media were family gatherings where we engage in things such as eating hot dogs and home cooked baked beans. Aunts would bring the potatoe salad and uncles their stories of winter storms and hunting trips.
Our grandmother who was born around the turn of the century always claimed we had Native American ancestry although no one knew for sure if she was right or not as they could not figure out where it came from. Although a clue from my father was that when he was young they would visit a reservation in Maine.
Sure enough, the Ancestry DNA testing shows a small % of Native American. I think the Ancestry DNA is well worth it, if you wait until it goes on sale it is only $49.95 and there is a ton of information in the App that they keep updating and linking new family members that come online. Just remember if you order before Christmas it does take several months to get the results, atleast for us as they must sell alot of kits around that time.