Complex sentence: After having studied at the Catholic College of Juilly, Charles-Louis de Secondat married his wife, Jeanne de Lartigue, a Protestant, brought him a substantial dowry when he was 26.
Split into simpler sentences: After having studied at the Catholic College of Juilly, Charles-Louis de Secondat married. His wife, Jeanne de Lartigue, a Protestant, brought him a substantial dowry when he was 26.