My mother Anne McKenzie (Springbok athlete 89y/o) nee Joubert thinks Maria Magdelena vd Merwe married her (my mother's) grandfather - Daniel Jakobus Joubert b 9 August 1860. Her father was named Izak Wilhelmus Joubert (b29 Sept 1890 d 29 Jan 1931 on farm Morceaux in Ceres) after Boerneef - or so my Mom thinks.
I am trying to build up a family tree - I have not found Boerneef's family tree so far. My Mom is keen to know whether Magdalena vd Merwe was Boernee'f sister.
Thank you, Ken