Henry III of France was the last Valois King of France and reigned during the French Wars of Religion. He is often referred to as the most capable son of Henry II and Catherine de'Medici. He was in his youth a successful general, defeating a large Protestant army at Jarnec in 1569 and considered a hardline Catholic during this period. During much of his reign, however, Henry associated himself with favorites that were associated with the Politique movement, which advocated that only a Strong and Powerful religiously moderate King could bring peace and order to France. For much of Henry's reign his younger brother and presumptive heir Francis, Duke of Alencon sought to undermine his brothers authority. The Duke of Alencon's position at court was strengthened by Henry's lack of a male heir. In 1584, The Duke of Alencon fell ill and died leaving the distant cousin and Protestant Henry of Navarre as heir.
In the months immediately following the Duke of Alencon's death, a number of leading nobles and courts favorites pressured Henry to divorce his wife Louise of Lorraine, who many believed as sterile following a miscarriage in 1576. If Henry had listened to their requests and divorced his wife, who would be some leading candidates to become his main consort?
Assuming Henry III lives longer and has a son that will eventually succeed him what effect would a surviving House of Valois have on the French Wars of Religions and the development of the French Monarchy?