You also have to realise that only partial family history can ever be truly handed down, particularly when there are no official records. Look back 6 generations in your family and there are 64 direct ancestors (if you're lucky and there was no inbreeding). There's no way all of those names and personalities get preserved. I went looking for family history in parish records and thought that I found a goldmine. Turns out there are about 5 people with the same name in the relatively sparsely populated town that my great great great grandfather was born in. Maybe some were cousins. Maybe one of them was a first-born son who died in childhood, so the traditional first-born name was recycled. It sounds cold hearted, but that shit happened.