Duke Xuan of Chen
... that after his favourite concubine gave birth to a son, Duke Xuan of Chen killed the crown prince and made the newborn his heir apparent?
... that after his favourite concubine gave birth to a son, <b id="mwC9U"><a href="./Duke_Xuan_of_Chen" id="mwC9Y" rel="mw:WikiLink" title="Duke Xuan of Chen">Duke Xuan of Chen</a></b> killed <a href="./Yukou" id="mwC9c" rel="mw:WikiLink" title="Yukou">the crown prince</a> and made <a href="./Duke_Mu_of_Chen" id="mwC9g" rel="mw:WikiLink" title="Duke Mu of Chen">the newborn</a> his heir apparent?