Ivan Novoseltsev
Ivan Petrovich Novoseltsev( born January 23, 1979) is a Russian former professional ice hockey winger.
He is the uncle of Vladislav Namestnikov.
John Montgomery Glover
John Montgomery Glover( September 4, 1822 – November 15, 1891) was a North American politician, who served as a U.S. Representative from Missouri, he was the uncle of John Milton Glover.
Ivan Benito
Ivan Benito( born 27 August 1976 in Aarau) is a Swiss retired professional footballer who played as goalkeeper.
He is the uncle of Loris Benito.
Bonifazio Bevilacqua Aldobrandini
Bonifazio Bevilacqua Aldobrandini (1571 – April 7, 1627) was an Italian Cardinal.
He was the uncle of Pope Gregory XIV.
John A. Peters (1822–1904)
John Andrew Peters( October 9, 1822 – April 2, 1904) was a U.S. Congressman from Maine, and the uncle of John Andrew Peters.
He was also Chief Justice of the Maine Supreme Judicial Court.
John Breckin
John Breckin( born 27 July 1953) is an English former professional footballer who played as a left- back.
He is the uncle of Nottingham Forest defender Ian Breckin.
Bradley Orr
Bradley James Orr( born 1 November 1982) is an English retired footballer.
He is the uncle of Rangers defender Jon Flanagan.
John Athalarichos
John Athalarichos , also spelled as Atalarichos, Athalaric, and At'alarik, was an illegitimate son of the 7th century Byzantine Emperor Heraclius.
In 637, he was alleged to have taken part in a plot to overthrow Heraclius and seize the throne.
His name, Athalarichos, is Gothic, composed of the elements Athala (from Proto-Germanic word *"aþala" meaning "noble") and richos (from *"reiks" meaning "ruler").
Christopher H. Clark
Christopher Henderson Clark (1767 – November 21, 1828) was a congressman and lawyer from Virginia.
He was the brother of James Clark, the uncle of John Bullock Clark, Sr. and the great-uncle of John Bullock Clark, Jr..
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.

Question: Who is John Athalarichos's uncle?
Answer: Theodore