Frederick of Hesse-Darmstadt (28 February 1616 – 19 February 1682) was a German protestant and soldier who converted to Catholicism, became a cardinal and was appointed Crown-cardinal of Austria.
Frederick of Hesse-Darmstadt (28 February 1616 – 19 February 1682) was a German protestant and soldier who converted to Catholicism, became a cardinal and was appointed Crown-cardinal of Austria.