Complex sentence: From 1814 to 1821 the Strandfontein farm, which later became the Summerstrand beach suburb of Port Elizabeth, was in possession of Piet Retief, who later became a Voortrekker leader and was killed in 1837 by Zulu king Dingane during negotiations about land.
Split into simpler sentences: From 1814 to 1821 the Strandfontein farm, which later became the Summerstrand beach suburb of Port Elizabeth, was owned by Piet Retief. He later became a Voortrekker leader and was killed in 1837 by Zulu king Dingane during negotiations about land.