Complex sentence: The Manor of Stratfieldsaye was made up from the property of two much older manors, in the 12th century it was owned by the Stoteville family but this then passed through marriage to the de Saye family at the start of the 13th century.
Split into simpler sentences: The Manor of Stratfieldsaye was made up from the property of two much older manors. In the 12th century it was owned by the Stoteville family and was then passed, through marriage, to the de Saye family at the start of the 13th century.