6 June -
Charles X Gustav succeeds his cousin
Christina on the Swedish throne. After her abdication on the same day, Christina, now the former reigning queen of a
Protestant nation, secretly converts to
Catholicism.
^Davenport, Frances Gardiner; Paullin, Charles Oscar (2004), European Treaties Bearing on the History of the United States and Its Dependencies, The Lawbook Exchange, Ltd., p. 43,
ISBN1-58477-422-3