Mum-Zi, 17
This particular story is said to have happened in the 1800’s, so it’s not sure whether it’s true or not. Supposedly, Mum-Zi was only 8 when she had her first daughter. Then her daughter went on to get pregnant and have her first child at 9, making Mum-Zi supposedly the youngest grandmother at the shocking age of 17-years. But there has been no guarantee that this story is even true or not.