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..
Alexios III Angelos
Alexios III
Angelos  (1211) was Byzantine Emperor from March 1195 to July 17/18, 1203.
A member of the extended imperial family, Alexios came to throne after deposing, blinding, and imprisoning his younger brother Isaac II Angelos.
The most significant event of his reign was the attack of the Fourth Crusade on Constantinople in 1203, on behalf of Alexios IV Angelos.
Alexios III took over the defense of the city, which he mismanaged, then fled the city at night with one of his three daughters.
From Adrianople, and then Mosynopolis, he unsuccessfully attempted to rally his supporters, only to end up a captive of Marquis Boniface of Montferrat.
He was ransomed, sent to Asia Minor where he plotted against his son-in-law Theodore Laskaris, but was eventually arrested and spent his last days confined to the Monastery of Hyakinthos in Nicaea, where he died.
Bonifazio Bevilacqua Aldobrandini
Bonifazio Bevilacqua Aldobrandini (1571 – April 7, 1627) was an Italian Cardinal.
He was the uncle of Pope Gregory XIV.
Hysen Hoxha
Hysen Efendi Hoxha( 1861–1934) was an Albanian politician, mayor of Gjirokastër, and the uncle of Enver Hoxha.
Tarcisio Fusco
Tarcisio Fusco was an Italian composer of film scores.
He was the brother of the composer Giovanni Fusco and the uncle of operatic soprano Cecilia Fusco.
Giuseppe Bonizzoni
Giuseppe Bonizzoni( 22 April 1908 – 21 July 1976) was an Italian professional footballer who played as a defender.
He was the uncle of former footballer and manager Luigi Bonizzoni.
Bradley Orr
Bradley James Orr( born 1 November 1982) is an English retired footballer.
He is the uncle of Rangers defender Jon Flanagan.
Eudokia Angelina
Eudokia Angelina (or Eudocia Angelina) (around 1173–died , or later) was the consort of Stefan the First-Crowned of Serbia from c. 1190 to c. 1200.
She later remarried, to Alexios V Doukas, who briefly ruled as Emperor of Byzantium in 1204.
She was a daughter of Alexios III Angelos and Euphrosyne Doukaina Kamatera.
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.

Question: Who is the uncle of Eudokia Angelina?
Answer: Isaac II Angelos