Breteuil's secret correspondence with Louis XVI and Marie Antoinette was recently discovered in an Austrian castle by British historian Professor Munro Price.
布勒特伊与路易十六和玛丽·安托瓦内特的秘密通信最近被发现于一个奥地利城堡，由英国历史学家蒙罗·普赖斯（Munro Price）教授发现。