Question: Who is Anna Of Austria, Queen Of Spain's mother-in-law?
Sentence (from "Philip II of Spain"): On 31 December 1584 Philip signed the Treaty of Joinville, with Henry I, Duke of Guise signing on behalf of the Catholic League; consequently Philip supplied a considerable annual grant to the League over the following decade to maintain the civil war in France, with the hope of destroying the French Calvinists.
Relevant evidence: No