![Francesca Tinti on Twitter: "Another ninth-century square halo! This is Leo IV as represented in a fresco in the Basilica of San Clemente https://t.co/Az0LhnMmGB" / Twitter Francesca Tinti on Twitter: "Another ninth-century square halo! This is Leo IV as represented in a fresco in the Basilica of San Clemente https://t.co/Az0LhnMmGB" / Twitter](https://pbs.twimg.com/media/FGACQdfWYAYqUKH.jpg:large)
Francesca Tinti on Twitter: "Another ninth-century square halo! This is Leo IV as represented in a fresco in the Basilica of San Clemente https://t.co/Az0LhnMmGB" / Twitter
![Portrait of Pope Leo IV by Giovanni Battista de'Cavalieri (1526-1597): Fair | The Online Portrait Gallery Portrait of Pope Leo IV by Giovanni Battista de'Cavalieri (1526-1597): Fair | The Online Portrait Gallery](https://pictures.abebooks.com/inventory/31423960436.jpg)
Portrait of Pope Leo IV by Giovanni Battista de'Cavalieri (1526-1597): Fair | The Online Portrait Gallery
![Pope Leo IV; Leo Quartus; Liber chronicarum. A flower celk with a pope. He wears a tiara and has a staff with a double cross in his hands. The show is part Pope Leo IV; Leo Quartus; Liber chronicarum. A flower celk with a pope. He wears a tiara and has a staff with a double cross in his hands. The show is part](https://c8.alamy.com/comp/2G4236B/pope-leo-iv-leo-quartus-liber-chronicarum-a-flower-celk-with-a-pope-he-wears-a-tiara-and-has-a-staff-with-a-double-cross-in-his-hands-the-show-is-part-of-the-sequence-pops-in-the-liber-chronicarum-the-text-identifies-the-man-as-leo-iv-the-print-is-part-of-an-album-2G4236B.jpg)
Pope Leo IV; Leo Quartus; Liber chronicarum. A flower celk with a pope. He wears a tiara and has a staff with a double cross in his hands. The show is part
![Odin on Twitter: "Date unknown: John Kavanagh, My friend the Seer, but also played Pope Leo IV in the History serie #Vikngs : https://t.co/WEBfxNx3Gm https://t.co/CGBronL6fs" / Twitter Odin on Twitter: "Date unknown: John Kavanagh, My friend the Seer, but also played Pope Leo IV in the History serie #Vikngs : https://t.co/WEBfxNx3Gm https://t.co/CGBronL6fs" / Twitter](https://pbs.twimg.com/media/EIevjtDXkAEzoJ5.jpg)