In 1798, the house and estate were bought by the Jamaican-born Manasseh Masseh Lopes, the son of a rich plantation owner, whose family later gained the title of Baron Roborough: their seat remained at Maristow until 1938.
The Lopes family, descendents of Jamaican-born Tory Member of Parliament and Baronet of Sephardic-Jewish Portuguese origin Sir Manasseh Masseh Lopes, 1st Baronet, lived in Roborough and acquired the title Baron Roborough in the twentieth century, after moving from nearby Maristow House on the River Tavy and before relocating to Gnaton, a smaller mansion on the coast near Noss Mayo.
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