Complex sentence: Robert Furze Brettingham (1750-1806?) was an English architect, the nephew of Matthew Brettingham the Elder, who practised in London with great success, and erected many mansion houses throughout the country.
Split into simpler sentences: Robert Furze Brettingham (1750-1806?), was an architect. Brettingham was the nephew of Matthew Brettingham the Elder, practised in London with great success, and erected many mansion houses throughout the country.