Constantine III (Byzantine emperor)
Constantine III (3 May 612 – 20 April or 24/26 May 641) was Byzantine emperor for four months in 641, making him the shortest reigning Byzantine emperor.
He was the eldest son of the Byzantine Emperor Heraclius and his first wife Eudokia.
Constantine's birth name was Heraclius Novus Constantinus, , which was also the official name under which he reigned.
The name Constantine became established in later Byzantine texts as short for the Emperor and has become standard in modern historiography.
In terms of official imperial nomenclature, the style "Constantine III" would be more appropriate for his son Constans II (r. 641–668).
Heros of Arles
Heros was Bishop of Arles from 408 to 412.
He was installed as bishop by the usurper Constantine III, and was deposed by Constantius III.
Prosper of Aquitaine describes him in his" Chronicle" as vir sanctus, et beati Martini discipulus.
He was installed as bishop in the face of local opposition.
Heros lost his see in the reprisals which followed the defeat and execution of Constantine III, and was replaced by Patroclus of Arles.
Along with Lazarus, who had also been deposed as bishop of Aix- en- Provence by Constantius, he went into exile in Palestine.
In 415 both Heros and Lazarus wrote a letter to the Council of Diospolis condemning Pelagianism; they wrote a second letter together to the Council of Carthage( 416).
Heraclius
Heraclius ("Flavios Iraklios"; c. 575 – February 11, 641) was the Emperor of the Byzantine Empire 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 usurper Phocas.
Heraclius's reign was marked by several military campaigns.
The year Heraclius came to power, the empire was threatened on multiple frontiers.
Heraclius immediately took charge of the Byzantine–Sasanian War of 602–628.
The first battles of the campaign ended in defeat for the Byzantines; the Persian army fought their way to the Bosphorus but Constantinople was protected by impenetrable walls and a strong navy, and Heraclius was able to avoid total defeat.
Soon after, he initiated reforms to rebuild and strengthen the military.
Heraclius drove the Persians out of Asia Minor and pushed deep into their territory, defeating them decisively in 627 at the Battle of Nineveh.
The Persian king Khosrow II was overthrown and executed by his son Kavad II, who soon sued for a peace treaty, agreeing to withdraw from all occupied territory.
This way peaceful relations were restored to the two deeply strained empires.
Heraclius lost many of his newly-regained lands to the Muslim conquests.
Emerging from the Arabian Peninsula, the Muslims quickly conquered the Sasanian Empire.
In 634 the Muslims marched into Roman Syria, defeating Heraclius's brother Theodore.
Within a short period of time, the Arabs conquered Mesopotamia, Armenia and Egypt.
Heraclius entered diplomatic relations with the Croats and Serbs in the Balkans.
He tried to repair the schism in the Christian church in regard to the Monophysites, by promoting a compromise doctrine called Monothelitism.
The Church of the East (commonly called Nestorian) was also involved in the process.
Eventually this project of unity was rejected by all sides of the dispute.
Constantius III
Constantius III( Latin:" Flavius Constantius Augustus") was Western Roman Emperor in 421, from 8 February until his death on 2 September.
He earned his position as Emperor due to his capability as a general under Honorius, achieving the rank of" Magister militum" by 411.
That same year, he was sent to suppress the revolt of Constantine III, a Roman general who declared himself emperor.
Constantius led his army to Arles in Gaul, the capital of Constantine III, and defeated Gerontius, a general rebelling against Constantine, before himself besieging Arles.
After defeating a relief force led by Edobichus, Constantius convinced Constantine to surrender, promising safe retirement, but betrayed and beheaded him as soon as he surrendered.
Constantius then went on to lead campaigns against various barbarian groups in Hispania and Gaul, recovering much of both for the Western Roman Empire.
Constantius was proclaimed Western Roman Emperor by Honorius on 8 February 421.
He reigned for seven months before dying on 2 September 421.
Gregoria
Gregoria( fl. 641) was the Byzantine empress as the wife of Constantine III.
She participated in the minor regency government of her son, Constans II, in 641.
Iustinianus
Iustinianus( died 407 AD) was a Roman military commander who supported the usurper Constantine III.
Edobichus
Edobichus( died 411) was a general of the Roman usurper Constantine III.
Although he was a native of Britain, according to Zosimus his ancestors were Franks.
Constantine III, King of Armenia
Constantine III( also Constantine V;;, Western Armenian transliteration:" Gosdantin" or" Kostantine"; April 17, 1313 – December 21, 1362) was the King of Armenian Cilicia from 1344 to 1362.
He was the son of Baldwin, Lord of Neghir( a nephew of Hethum I of Armenia), and second cousin of Constantine II.
When Constantine II was killed in an uprising in 1344, Constantine III succeeded him.
He attempted to wipe out all rival claimants to the throne; he gave orders to kill Constantine II's nephews, Bemon and Leo, but before the murder could be carried out they escaped to Cyprus.
During his rule, Armenian Kingdom of Cilicia was reduced by Mamluk raids and conquests.
They conquered Ajazzo in 1347, Tarsus and Adana in 1359.
Constantine was the first husband of Maria, daughter of Oshin of Corycos and Joan of Taranto.
He was predeceased by his two sons.
Upon his death from natural causes he was succeeded by his cousin Constantine IV.
Nebiogastes
Nebiogastes( Greek: Νεοβιγάστης or Νεβιγάστιος; died 407 AD) was a Roman military commander that supported the usurper Constantine III.
Constantine III of Abkhazia
Constantine III was King of the Abkhazia from 894 to 923 AD.
He was the son and successor of Bagrat I of the Anchabadze dynasty.

Question: Where did Constantine Iii (Byzantine Emperor)'s father die?
Answer: Constantinople