Complex sentence: Pieter was Lord of Oudshoorn, Ridderbuurt and Gnephoek, the only son of Barend Cornelis van Reede van Oudtshoorn (1690--1750) and his wife Catharina Cornelia van Eys.
Split into simpler sentences: Pieter was Lord of Oudshoorn, Ridderbuurt and Gnephoek. He was the only son of Barend Cornelis van Reede van Oudtshoorn (1690--1750) and his wife Catharina Cornelia van Eys.