I have had a few aunts and cousins on both sides of the family create a family tree. They say the hardest part is keeping it up to date.
Yep ... my dad was really into it, since nobody had traced the family back.
He found a removed cousin who had been in an asylum since childhood. From when they put kids in asylums for being "too disruptive". My dad found the nearest living relatives, and they went and got the guy out and he was able to live out his final years with relatives.
He also found we are distant relatives of Walt Disney. But since we don't get any benefits, it's just a trivia topic.
My mom's family passes down oral history ... which she was able to confirm using Ancestry.com.
I can't remember which side, but one of my ancestors was relatively wealthy - but gave most of their land up to develop a city where the railroad was going through. We went back one year and saw their "plains manor" and was taking pictures of it, when the occupants came out to ask what we were doing. (This was late 1970s) We discovered they were also descendants of the couple - and the home had stayed in the family for generations.
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Another of my relatives was John Milburn Davis. The creator of the Davis Memorial is Hiawatha Kansas.
That's an interesting story.
https://www.cityofhiawatha.org/visitors/what-to-see-do/davis-memorial#:~:text=John%20Milburn%20Davis%20erected%20this,in%20their%20detail%20and%20accuracy.
From our family history, the reason he spent all that money on her memorial, is because her family demanded any money he didn't spend on her funeral be "returned" to them. (They had given it as a wedding gift, but never liked John as he came from a poor family and she came from a wealthy one.)