![Pope Alexander treading on the neck of Emperor Frederick, illustration from 'Acts and Monuments' by John Foxe, ninth edition, pub. 1684 (litho) by English School, (17th century) Pope Alexander treading on the neck of Emperor Frederick, illustration from 'Acts and Monuments' by John Foxe, ninth edition, pub. 1684 (litho) by English School, (17th century)](https://images-cdn.bridgemanimages.com/api/1.0/image/600wm.STC.2822740.7055475/469103.jpg)
Pope Alexander treading on the neck of Emperor Frederick, illustration from 'Acts and Monuments' by John Foxe, ninth edition, pub. 1684 (litho) by English School, (17th century)
![Image of FREDERICK II (1194-1250). Holy Roman Emperor, 1215-1250. The Excommunication Of Frederick II By Pope Gregory IX. Oil On Canvas By Giorgio Vasari (1511-1574). From Granger - Historical Picture Archive Image of FREDERICK II (1194-1250). Holy Roman Emperor, 1215-1250. The Excommunication Of Frederick II By Pope Gregory IX. Oil On Canvas By Giorgio Vasari (1511-1574). From Granger - Historical Picture Archive](https://www.granger.com/wmpix/por2/fdk/0005843-FREDERICK-II-1194-1250-Holy-Roman-Emperor-1215-1250-The-excommunication-of-Frederick-II-by-Pope-Gregory-IX-Oil-on-canvas-by-Giorgio-Vasari-1511-1574.jpg)
Image of FREDERICK II (1194-1250). Holy Roman Emperor, 1215-1250. The Excommunication Of Frederick II By Pope Gregory IX. Oil On Canvas By Giorgio Vasari (1511-1574). From Granger - Historical Picture Archive
![Pope Pius II and the Emperor Frederick III seated on one throne, 1493 by Michael Wolgemut, Wilhelm Pleydenwurff :: | Art Gallery of NSW Pope Pius II and the Emperor Frederick III seated on one throne, 1493 by Michael Wolgemut, Wilhelm Pleydenwurff :: | Art Gallery of NSW](https://www.artgallery.nsw.gov.au/media/collection_images/6/6451%23%23S.jpg)
Pope Pius II and the Emperor Frederick III seated on one throne, 1493 by Michael Wolgemut, Wilhelm Pleydenwurff :: | Art Gallery of NSW
![FREDERICK II (1194-1250). /nHoly Roman Emperor, 1215-1250. The excommunication of Frederick II by Pope Gregory IX. Oil on canvas by Giorgio Vasari (1511-1574 Stock Photo - Alamy FREDERICK II (1194-1250). /nHoly Roman Emperor, 1215-1250. The excommunication of Frederick II by Pope Gregory IX. Oil on canvas by Giorgio Vasari (1511-1574 Stock Photo - Alamy](https://c8.alamy.com/comp/FF6P63/frederick-ii-1194-1250-nholy-roman-emperor-1215-1250-the-excommunication-FF6P63.jpg)
FREDERICK II (1194-1250). /nHoly Roman Emperor, 1215-1250. The excommunication of Frederick II by Pope Gregory IX. Oil on canvas by Giorgio Vasari (1511-1574 Stock Photo - Alamy
![Submission of Frederick Barbarossa before Pope Alexander III during the signing of the Treaty of Venice (detail), c.1563 - Francesco de' Rossi (Francesco Salviati), "Cecchino" - WikiArt.org Submission of Frederick Barbarossa before Pope Alexander III during the signing of the Treaty of Venice (detail), c.1563 - Francesco de' Rossi (Francesco Salviati), "Cecchino" - WikiArt.org](https://uploads4.wikiart.org/00291/images/francesco-de-rossi-francesco-salviati/francesco-salviati-e-giuseppe-porta-detto-il-salviatino-riconciliazione-di-papa-alessandro-iii-e-2.jpg!Large.jpg)
Submission of Frederick Barbarossa before Pope Alexander III during the signing of the Treaty of Venice (detail), c.1563 - Francesco de' Rossi (Francesco Salviati), "Cecchino" - WikiArt.org
![Religious, Schedel, Pope Aeneas Silvio Piccolomini, Pius II, meets Fre – Philographikon Antique Maps and Prints Religious, Schedel, Pope Aeneas Silvio Piccolomini, Pius II, meets Fre – Philographikon Antique Maps and Prints](https://lovelyantiqueprints.com/cdn/shop/products/IMG_5127_1024x1024.jpg?v=1577632217)
Religious, Schedel, Pope Aeneas Silvio Piccolomini, Pius II, meets Fre – Philographikon Antique Maps and Prints
![Frederick III "the Peaceful", 21.9.1415 - 19.8.1493, Holy Roman Emperor 16.3.1452 - 19.8.1493, coronation in Rome by Pope Nicholas V, woodcut to "Weisskunig", 1510 - 1513 Stock Photo - Alamy Frederick III "the Peaceful", 21.9.1415 - 19.8.1493, Holy Roman Emperor 16.3.1452 - 19.8.1493, coronation in Rome by Pope Nicholas V, woodcut to "Weisskunig", 1510 - 1513 Stock Photo - Alamy](https://c8.alamy.com/comp/G5FX97/frederick-iii-the-peaceful-2191415-1981493-holy-roman-emperor-1631452-G5FX97.jpg)
Frederick III "the Peaceful", 21.9.1415 - 19.8.1493, Holy Roman Emperor 16.3.1452 - 19.8.1493, coronation in Rome by Pope Nicholas V, woodcut to "Weisskunig", 1510 - 1513 Stock Photo - Alamy
![August 22 – The pope who preached a Crusade against the German Emperor Frederick II - Nobility and Analogous Traditional Elites August 22 – The pope who preached a Crusade against the German Emperor Frederick II - Nobility and Analogous Traditional Elites](https://nobility.org/wp-content/uploads/2011/08/images.jpg)
August 22 – The pope who preached a Crusade against the German Emperor Frederick II - Nobility and Analogous Traditional Elites
![The Submission of the Emperor Frederick Barbarossa to Pope Alexander III | Master Works on Paper from Five Centuries | 2022 | Sotheby's The Submission of the Emperor Frederick Barbarossa to Pope Alexander III | Master Works on Paper from Five Centuries | 2022 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/94e7dd3/2147483647/strip/true/crop/1748x2000+0+0/resize/2048x2343!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2F0e%2F8a%2F0e2fd50b4f46990edb9b02be07a7%2F061n10904-c4jnl-t1-04.jpg)
The Submission of the Emperor Frederick Barbarossa to Pope Alexander III | Master Works on Paper from Five Centuries | 2022 | Sotheby's
![Pietro Malombra | The Emperor Frederick Barbarossa Submitting to Pope Alexander III in the Presence of a Doge | The Metropolitan Museum of Art Pietro Malombra | The Emperor Frederick Barbarossa Submitting to Pope Alexander III in the Presence of a Doge | The Metropolitan Museum of Art](https://images.metmuseum.org/CRDImages/dp/original/DP801422.jpg)
Pietro Malombra | The Emperor Frederick Barbarossa Submitting to Pope Alexander III in the Presence of a Doge | The Metropolitan Museum of Art
![Crown prince of Germany (future Frederick III) being received by Pope Leo XIII in the Throne room, Stock Photo, Picture And Rights Managed Image. Pic. DAE-B8013515 | agefotostock Crown prince of Germany (future Frederick III) being received by Pope Leo XIII in the Throne room, Stock Photo, Picture And Rights Managed Image. Pic. DAE-B8013515 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/4390ab5eb2ff41a6b4b8d09552364001/dae-b8013515.jpg)
Crown prince of Germany (future Frederick III) being received by Pope Leo XIII in the Throne room, Stock Photo, Picture And Rights Managed Image. Pic. DAE-B8013515 | agefotostock
![Pope Innocent IV ordering the excommunication and deposition of Frederick II of Hohenstaufend, Stock Photo, Picture And Rights Managed Image. Pic. DAE-10234743 | agefotostock Pope Innocent IV ordering the excommunication and deposition of Frederick II of Hohenstaufend, Stock Photo, Picture And Rights Managed Image. Pic. DAE-10234743 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/f03c38e62b7fe4fdedeef61f03d93cc4/dae-10234743.jpg)