History Saint-Germain-lès-Arpajon:
During the Gallo-Roman period, the common name Chastres and was not separated from what is now Arpajon and Norville. In the Middle Ages, "said Saint-Germain-lès-Châtres or Saint-Germain near Châtres. In the 13th century, Saint-Germain was a dependency of castellany Montlhéry. In the 16th century, the town became lord of Graville with Louis Malet de Graville, a wealthy and powerful lord named admiral of France a few years earlier. In the 18th century, it was the Noailles who made their lordship.
Finally, Saint-Germain-lès-Arpajon took its current name in 1723 following the acquisition of common Châtres by Louis de Severac, Marquis of Arpajon-sur-Cere. Note that during the revolution, the village was known for fifteen months, Germinal-sur-Orge.
