 Yet the daughters of Francis I of France were promised elsewhere or sickly.Perhaps to remind Francis of his obligations James's envoys began negotiations for his marriage elsewhere from the summer of 1529, both to Catherine de' Medici, the Duchess of Urbino, and Mary of Austria, Queen of Hungary, the sister of Holy Roman Emperor Charles V. The English diplomat Thomas Magnus raised the possibility of his marriage to Princess Mary with Adam Otterburn in December 1528.But plans changed.