
1) Byzantine junior emperor
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https://www.crosswordclues.com/clue/heraclius

Heraclius (Flavius Heraclius Augustus, Φλάβιος Ἡράκλειος, Հերակլես Փլավիոս, c. 575 – February 11, 641) was Byzantine Emperor from 610 to 641.{#tag:ref|Byzantine Empire is a relatively modern term for what in Heraclius` time was referred to the Roman Empire or Eastern Roman Empire. The earliest use of the term, `.....
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http://en.wikipedia.org/wiki/Heraclius
[brother of Tiberius III] Heraclius (Ἡράκλειος, Herakleios) was the brother of the Byzantine emperor Tiberius III (r. 698–705) and the Byzantine Empire`s leading general during his reign. He scored a number of victories against the Umayyads, but was unable to halt the Arab conquest of Armenia, nor able to prevent the deposition ...
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http://en.wikipedia.org/wiki/Heraclius_(brother_of_Tiberius_III)
[primicerius sacri cubiculi] Heraclius (died March 16, 455) was an influential eunuch of the Western Roman Emperor Valentinian III. Heraclius was an eunuch and the primicerius sacri cubiculi of the Western Roman Emperor Valentinian III, on whom he had a great influence. Heraclius was an enemy of the powerful general Aetius, and allied himse...
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http://en.wikipedia.org/wiki/Heraclius_(primicerius_sacri_cubiculi)

Eastern Roman emperor (610–641) who reorganized and strengthened the imperial administration and the imperial armies but who, nevertheless, lost ... [18 related articles]
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http://www.britannica.com/eb/a-z/h/39

(c. 575-641) Byzantine emperor from 610. His reign marked a turning point in the empire's fortunes. Of Armenian descent, he recaptured Armenia in 622, and other provinces 622-28 from the Persians, but lost...
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http://www.encyclo.co.uk/local/20688

Byzantine emperor from 610. His reign marked a turning point in the empire's fortunes. Of Armenian descent, he recaptured Armenia in 622, and other provinces 622–28 from the Persians, but lost them to the Muslims 629–41
Found on
https://www.encyclo.co.uk/local/21221
No exact match found.