Complex sentence: One of his sons was a Huguenot who took refuge in Switzerland and his grandson, Jean Antoine de Teissier, 3rd Baron of Marguerittes, was guillotined 20 May, 1794.
Split into simpler sentences: One of his sons was a Huguenot who took refuge in Switzerland. His grandson, Jean Antoine de Teissier, 3rd Baron of Marguerittes, was guillotined 20 May, 1794.