I know the past 3 generations of my family but don't know where they fit in. My father Petrus Johannes Jacob du Plessis (married to a Burger), grandfather Andries van Rooyen du Plessis (married to a Du Randt).As understood my great grandfather was also Petrus Johannes Jacob and was married to a Van Rooyen (that the reason for my grandfathers name). All from the Free State - Zastron-area. Any info?