Nikephoros I was a Byzantine writer and Ecumenical Patriarch of Constantinople from 12 April 806 to 13 March 815.
Nicephorus I of Constantinople trampling on John VII of Constantinople, miniature from Chludov Psalter.
Heraclius
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Heraclius was Byzantine emperor from 610 to 641. His rise to power began in 608, when he and his father, Heraclius the Elder, the Exarch of Africa, led a revolt against the unpopular emperor Phocas.
Nikephoros I of Constantinople
…to salvage the reputation of the patriarchate by criticising iconoclast patriarchs for submitting to the emperor, not for being iconoclasts. Emperor Heraclius was the ideal emperor in Nicephorus I's scheme because of how he worked alongside patriarch Sergius I of Constantinople, but also how Sergius I helped…
Solidus of Heraclius aged 35–38, struck in Constantinople between 610 and 613
"Heraclius Sentencing the Tyrant Phocas", lithography in the National Gallery of Art
Gold solidus of Heraclius and his father in consular robes, struck during their revolt against Phocas
Heraclius in 613–616 (aged 38–41) with his son Heraclius Constantine