Complex sentence: Jean Androuet du Cerceau, a French architect, the son of Jean Baptiste, (ca 1585--1650), the outstanding Parisian architect of his generation, is known for his "hôtels particuliers" in Paris.
Split into simpler sentences: Jean Androuet du Cerceau (c.1585--1650) was a French architect, the son of Jean Baptiste Androuet du Cerceau, the outstanding Parisian architect of his generation. Cerceau the younger is known for his "hôtels particuliers" in Paris.