The house where Francis of Assisi lived when young — Born to a prosperous silk merchant, Francis led a privileged life as a youth
Photo Credit: By Tetraktys - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=8497711

Francis of Assisi — cropped The oldest surviving depiction of Saint Francis is a fresco near the entrance of the Benedictine abbey of Subiaco, painted between March 1228 and March 1229.
Photo Credit: By Anonymous - da web, FAL, https://commons.wikimedia.org/w/index.php?curid=6382528

Pope Gregory IX —
Photo Credit: By Raphael - http://www.2artgallery.com/gallery/gregory-ix-approving-the-decretals-1511-by-raphael-p-5638.html?osCsid=ac17d37966aa52b020eb8f8e86d9f940, Public Domain, https://commons.wikimedia.org/w/index.php?curid=14726944

Pope Gregory IX — cropped from The Lives and Times of the Popes by Chevalier Artaud de Montor
Photo Credit: By Artaud de Montor (1772–1849) - https://archive.org/details/thelivesandtimes00montuoft, Public Domain, https://commons.wikimedia.org/w/index.php?curid=52369578

Pope Innocent IV sends Dominicans and Franciscans out to the Tartars (Mongols) —
Photo Credit: By Master of the City of Ladies - Vincent of Beauvais, Le Miroir Historial (Vol. IV)., Public Domain, https://commons.wikimedia.org/w/index.php?curid=9893798

The 1246 letter of Güyük to Pope Innocent IV — Letter of the Great Khan Güyük Güyük Khan to Pope Innocent IV, Persian version, brought to Europe by John de Carpini.
Photo Credit: By Güyük Khan - Dschingis Khan und seine Erben (exhibition catalogue), München 2005, p. 221, Public Domain, https://commons.wikimedia.org/w/index.php?curid=4223975

Innocent IV's coat of arms — Innocent IV (1243-1254) was probably the first pope who used personal arms
Photo Credit: By GretazImage created for the Blazon Project of the French Wikipedia. - Own workiThe source code of this SVG is valid.This vector image was created with Inkscape by Gretaz., CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2772990

Guyuk Khan — cropped
Photo Credit: By Unknown - http://old.news.mn/r/276459, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=72759560

Model of the Khan Palace in Karakorum — Model of the Khan Palace called Tumen Amgalan Ord, Wanangong (萬安宫) in Chinese in the National Museum of Mongolian History in Ulan Bator
Photo Credit: By Brücke-Osteuropa - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=7412449

Statue of Ögedei Khan — Ogedei's statue in Mongol palace, Gachuurt Mongolia
Photo Credit: By Enerelt at English Wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=22436323

Coronation of Ögedei in 1229 — by Rashid al-Din, early 14th century
Photo Credit: Reproduction in Genghis Khan et l’Empire Mongol by Jean-Paul Roux, collection “Découvertes Gallimard” (nº 422), série Histoire., Public Domain, https://commons.wikimedia.org/w/index.php?curid=3630034