Le grande mademoiselle, Anne Marie (Anne_Marie_Louise_d'Orléans,_Duchess_of_Montpensier) desired to wed Ferdinand III after the death of Maria Anna of Spain, but it appears Mazarin blocked putting out feelers for such a match. What if say Mazarin wasn't influential enough to block the outreach, how would the court in Vienna respond? If such a wedding were to take place how does this affect things?
Alternatively there was also the possibility of a marriage between her and Ferdinand Cardinal-Infante proposed by Anne of Austria, Queen of France. What if mademoiselle was open to it. How would it work out? Philip iv was very suspicious of him but Ferdinand III appears to have had a good relationship with the cardinal-infante so he could also support the match.
Alternatively there was also the possibility of a marriage between her and Ferdinand Cardinal-Infante proposed by Anne of Austria, Queen of France. What if mademoiselle was open to it. How would it work out? Philip iv was very suspicious of him but Ferdinand III appears to have had a good relationship with the cardinal-infante so he could also support the match.