unprincipled peter
Donor
Wiki says C II's first marriage was arranged by John of Austria, who had briefly seized power from the Queen. C II was 16ish at the time. a healthier lad might have been declared in his majority. Any way you slice it, IF those in charge desire a match with France, and Louis XIV has an appropriate aged daughter available (no real reason a POD of a healthy C II would make a surviving Louis daughter, though), it would logically stand that she is first in line to be offered. Spain is a top prize to make a match with.It would depend on the queen as you can't simply remove the regency.