Khan Omurtag of Bulgaria — From the Chronicle of John Skylitzes
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=2720148

Constantine VI. 780-797. Solidus — Gold, 4.47 g 6. COnSTAnTInOS bAS’ Θ Beardless crowned bust of Constantine VI facing, wearing chlamys and holding cross on globe in his right hand and akakia in his left.
Photo Credit: By Classical Numismatic Group, Inc. http://www.cngcoins.com, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=28604341

Constantine VII Porphyrogenitus —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=25484138

Patriarch Euthymius I —
Photo Credit: By Unknown, 13th-century author - History of John Skylitzes - Public Domain, https://commons.wikimedia.org/w/index.php?curid=32401786

Zoe Karbonopsina —
Photo Credit: By Classical Numismatic Group, Inc. http://www.cngcoins.com, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9442045

Nicholas I Mystikos — modern representation - cropped & smugged
Photo Credit: By Nikolai Pavlovic (1835-1894) - "Bulgarien vom Beginn seines staatlichen Bestandes bis auf unsere Tage", 1917, Public Domain, https://commons.wikimedia.org/w/index.php?curid=14641832

Alexander of Constantinople — By Unknown author - Cropped from mosaic at Hagia Sophia
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=25504327

Stephen I of Constantinople —
Photo Credit: By 13th-century author - History of John Skylitzes - Public Domain, https://commons.wikimedia.org/w/index.php?curid=57991651

Hagia Irene — The cathedral church of the Patriarchate before Hagia Sophia was completed
Photo Credit: By Sébah & Joaillier - Library of Congress, Public Domain, https://commons.wikimedia.org/w/index.php?curid=6327634

Coat of arms of the Ecumenical Patriarch of Constantinople —
Photo Credit: By Zografos 07 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=37973264

Hagia Sopia in 1852 — Square in Istanbul, with the Hagia Sophia mosque at right, part of an ornate pavilion at left, and several figures, some on horseback; print pasted onto backing sheet;Tinted lithograph with hand-coloring
Photo Credit: Print by Louis Haghe After: Gaspard Fossat - Public Domain, https://commons.wikimedia.org/w/index.php?curid=90296597