Amboise conspiracy
The Amboise conspiracy , also called Tumult of Amboise , was a failed attempt by Huguenots in 1560 to gain power over France by abducting the young king Francis II and arresting Francis , Duke of Guise and his brother , the Cardinal of Lorraine . 
<triplet> Francis, Duke of Guise <subj> Cardinal of Lorraine <obj> sibling <triplet> Cardinal of Lorraine <subj> Francis, Duke of Guise <obj> sibling