Excommunication of Holy Roman Emperor Frederick II (1227)
My latest for The Rebel: https://www.youtube.com/watch?v=5cpmg0t5Dzk
The audio-only version is available here: [podcast title="Rebel, September 29, 2016"]http://www.thejohnrobson.com/podcast/John2016/September/160929Rebel.mp3[/podcast]