Complex sentence: In 1779, she moved with her family to another farm owned by Cornelius Muller, and later on to another farm he owned near the Gambtoos River, and on the wagon trail to Cape Town.
Split into simpler sentences: In 1779, she moved with her family to farms owned by Cornelius Muller. They ended up on a farm he owned near the Gamtoos River, and on the wagon trail to Cape Town.