Catherine of Cleves
...that Henry III of France took to calling Catherine of Cleves "the mistress of Saint-Mégrin", in reference to a young nobleman killed by her illustrious husband?
...that <a href="./Henry_III_of_France" id="mwDs8" rel="mw:WikiLink" title="Henry III of France">Henry III of France</a> took to calling <b id="mwDtA"><a href="./Catherine_of_Cleves" id="mwDtE" rel="mw:WikiLink" title="Catherine of Cleves">Catherine of Cleves</a></b> "the mistress of Saint-Mégrin", in reference to a young nobleman killed by <a href="./Henry_I,_Duke_of_Guise" id="mwDtI" rel="mw:WikiLink" title="Henry I, Duke of Guise">her illustrious husband</a>?