Premise: Margaret of Valois . A daughter of King Henry II of France and Catherine de ' Medici , Margaret was the sister of kings Francis II , Charles IX and Henry III , and of Elisabeth of Valois Queen of Spain , as well as Claude of Valois . A queen of two kingdoms , Margaret was subjected to many political manipulations , including being held prisoner ( albeit at a comfortable castle ) by her own brother , Henry III of France , for many years .
Hypothesis: Margaret of Valois was an only child.
Label: CONTRADICTION