Complex sentence: Pierre was born July 20,1369, in Ligny-en-Barrois, Meuse, France and was the second of the six children of Guy of Luxembourg, Count of Ligny, and Saint-Pol, and Mahaut de Châtillon.
Split into simpler sentences: Pierre was born July 20,1369, in Ligny-en-Barrois, Meuse, France. He was the second of the six children of Guy of Luxembourg, Count of Ligny, and Saint-Pol, and Mahaut de Châtillon.