Maybe some minor things end up different, but I would think for the person to be the same, their parents have to be the same, because that DNA is what makes up them.

[She holds out the book to the newest page and their a sketch drawing of a man and a woman in regal attire.]

That's Queen Arianna and King Frederick. They rule the kingdom of Corona. And every year, there is an anniversary they pay special attention to. And on that day, every year, they asked their people to make a lantern and release it into the night sky, creating a stream of lights that can be seen for miles around.