Constantius II
Constantius II (7 August 317 – 3 November 361) was Roman Emperor from 337 to 361.
His reign saw constant warfare on the borders against the Sasanian Empire and Germanic peoples, while internally the Roman Empire went through repeated civil wars and usurpations.
His religious policies inflamed domestic conflicts that would continue after his death.
The second son of Constantine I and Fausta, Constantius was made "Caesar" by his father in 324.
He led the Roman army in war against the Sasanian Empire in 336.
A year later, Constantine I died, and Constantius became "Augustus" with his brothers Constantine II and Constans.
He promptly oversaw the massacre of eight of his relatives, consolidating his hold on power.
The brothers divided the empire among themselves, with Constantius receiving the eastern provinces.
In 340, his brothers Constantine and Constans clashed over the western provinces of the empire.
The resulting conflict left Constantine dead and Constans as ruler of the west.
The war against the Sasanians continued, with Constantius losing a major battle at Singara in 344.
Constans was overthrown and assassinated in 350 by the usurper Magnentius.
Unwilling to accept Magnentius as co-ruler, Constantius waged a civil war against the usurper, defeating him at the battles of Mursa Major in 351 and Mons Seleucus in 353.
Magnentius committed suicide after the latter battle, leaving Constantius as sole ruler of the empire.
In 351, Constantius elevated his cousin Constantius Gallus to the subordinate rank of "Caesar" to rule in the east, but had him executed three years later after receiving scathing reports of his violent and corrupt nature.
Shortly thereafter, in 355, Constantius promoted his last surviving cousin, Gallus' younger half-brother Julian, to the rank of "Caesar".
As emperor, Constantius promoted Arian Christianity, persecuted pagans by banning sacrifices and closing pagan temples and issued laws discriminating against Jews.
His military campaigns against Germanic tribes were successful: he defeated the Alamanni in 354 and campaigned across the Danube against the Quadi and Sarmatians in 357.
The war against the Sasanians, which had been in a lull since 350, erupted with renewed intensity in 359 and Constantius traveled to the east in 360 to restore stability after the loss of several border fortresses to the Sasanians.
However, Julian claimed the rank of Augustus in 360, leading to war between the two after Constantius' attempts to convince Julian to back down failed.
No battle was fought, as Constantius became ill and died of fever on 3 November 361 in Mopsuestia, naming Julian as his rightful successor before his death.
Cleomenes II
Cleomenes II( died 309 BC) was Agiad King of Sparta from 369 to 309 BC.
The son of Cleombrotus I, he succeeded his brother Agesipolis II.
He was the father of Acrotatus I, the father of Areus I, and of Cleonymus, the father of Leonidas II.
Constantine the Great
Constantine the Great (27 February AD 272 – 22 May AD 337), also known as Constantine I, was a Roman Emperor who ruled between AD 306 and 337.
Born in Naissus, in Dacia Ripensis, the city now known as Niš (located in Serbia), he was the son of Flavius Valerius Constantius, a Roman Army officer of Illyrian origins.
His mother, Helena, was Greek.
His father became "Caesar", the deputy emperor in the west, in AD 293.
Constantine was sent east, where he rose through the ranks to become a military tribune under Emperors Diocletian and Galerius.
In 305, Constantius was raised to the rank of "Augustus", senior western emperor, and Constantine was recalled west to campaign under his father in Britannia (Britain).
Constantine was acclaimed as emperor by the army at Eboracum (modern-day York) after his father's death in AD 306.
He emerged victorious in a series of civil wars against Emperors Maxentius and Licinius to become sole ruler of both west and east by AD 324 .
As emperor, Constantine enacted administrative, financial, social, and military reforms to strengthen the empire.
He restructured the government, separating civil and military authorities.
To combat inflation he introduced the solidus, a new gold coin that became the standard for Byzantine and European currencies for more than a thousand years.
The Roman army was reorganised to consist of mobile field units and garrison soldiers capable of countering internal threats and barbarian invasions.
Constantine pursued successful campaigns against the tribes on the Roman frontiers—the Franks, the Alamanni, the Goths, and the Sarmatians—even resettling territories abandoned by his predecessors during the Crisis of the Third Century.
Constantine was the first Roman emperor to convert to Christianity.
Although he lived much of his life as a pagan, and later as a catechumen, he joined the Christian faith on his deathbed, being baptised by Eusebius of Nicomedia.
He played an influential role in the proclamation of the Edict of Milan in 313, which declared religious tolerance for Christianity in the Roman empire.
He called the First Council of Nicaea in 325, which produced the statement of Christian belief known as the Nicene Creed.
The Church of the Holy Sepulchre was built on his orders at the purported site of Jesus' tomb in Jerusalem and became the holiest place in Christendom.
The Papal claim to temporal power in the High Middle Ages was based on the forged Donation of Constantine.
He has historically been referred to as the "First Christian Emperor", and he did heavily promote the Christian Church.
Some modern scholars, however, debate his beliefs and even his comprehension of the Christian faith itself.
The age of Constantine marked a distinct epoch in the history of the Roman Empire.
He built a new imperial residence at Byzantium and renamed the city Constantinople (now Istanbul) after himself (the laudatory epithet of "New Rome" came later, and was never an official title).
It became the capital of the Empire for more than a thousand years, with the later eastern Roman Empire, now being referred to as the Byzantine Empire by historians.
His more immediate political legacy was that he replaced Diocletian's tetrarchy with the principle of dynastic succession by leaving the empire to his sons.
His reputation flourished during the lifetime of his children and for centuries after his reign.
The medieval church upheld him as a paragon of virtue, while secular rulers invoked him as a prototype, a point of reference, and the symbol of imperial legitimacy and identity.
Beginning with the Renaissance, there were more critical appraisals of his reign, due to the rediscovery of anti-Constantinian sources.
Trends in modern and recent scholarship have attempted to balance the extremes of previous scholarship.
Barbatio
Barbatio( died AD 359) was a Roman general of the infantry( Magister Peditum= Master of Foot) under the command of Constantius II.
Previously he was a commander of the household troops( Protectores Domesticus) under Gallus Caesar, but he arrested Gallus under the instruction of Constantius, thereby ensuring his promotion on the death of Claudius Silvanus.
In 359, both he and his wife Assyria were arrested and beheaded for treason against Constantius, possibly as part of a plot by Arbitio, a senior cavalry commander( Magister Equitum= Master of Horse), and another exponent of the forms of scheming and political intrigue that became such a part of the later Roman Empire.
John Templeton (botanist)
John Templeton( 1766–1825) was an early Irish naturalist and botanist.
He is often referred to as the" Father of Irish Botany".
He was the father of naturalist, artist and entomologist Robert Templeton.
Daughter of Julius Constantius
An unnamed daughter of Julius Constantius was the first known wife of Constantius II.
Flavia Maxima Constantia
Flavia Maxima Constantia( 361/362 – 383) was the first empress consort of Gratian of the Western Roman Empire.
According to Ammianus Marcellinus, Constantia was a posthumous child of Constantius II by his third wife Faustina.
Her paternal grandparents were Constantine the Great and Fausta.
Apodemius
Apodemius( died 361) was an officer of the Roman Empire, a courtier of Emperor Constantius II, involved in the deaths of Constantius Gallus and Claudius Silvanus.
Scudilo
Scudilo was an Alemannic warrior who served in the Roman army under emperor Constantius II.
Obata Toramori
He was the father of Obata Masamori.

Question: What is the place of birth of Constantius Ii's father?