Barons of Massy Barões de Massy Records #7 Holders Family filter On/Off Antoine Coëffier, marquis of Effiat * 1581 Antoine d' Estourmel, baron of Massy Antoine, baron of Massy * 1997 Antoinette, princess of Monaco * 1920 Christian Louis, baron of Massy * 1949 Christine Alix, baroness of Massy * 1951 Elisabeth-Anne, baroness of Massy * 1947 Corrections and Updates To suggest a correction or an update. Click Here