Question: Who is the paternal grandmother of Maria Anna Vasa?
Sentence (from "John II Casimir Vasa"): In 1638 he embarked at Genoa for Spain to negotiate a league with Philip IV against France, but suffering shipwreck on the coast of Provence, he was seized and by order of Cardinal Richelieu imprisoned at Vincennes, where he remained two years, and was only released on promise of his brother the king of Poland never to wage war against France.
Relevant evidence: No