Bradley Orr
Bradley James Orr( born 1 November 1982) is an English retired footballer.
He is the uncle of Rangers defender Jon Flanagan.
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.
Princess Anka Obrenović
Princess Anka Obrenović (later Anka Konstantinović, ; 1 April 1821 – 10 June 1868 [29 May o.s.]) was a member of the Serbian royal Obrenović dynasty as the niece of the dynasty's founder
Miloš Obrenović I, Prince of Serbia.
She was also a society leader and writer whose translations in 1836 were the first literary works compiled by a woman to be published in Serbia.
She was the inspiration for a poem by renowned Croatian poet Antun Mihanović, who had wished to marry her when she was 16 and he 41.
In 1860, she established one of the first Serbian salons in her home in Belgrade.
She was also known as "Anka pomodarkaAnka the fashionable").
She was assassinated alongside her first cousin Prince Michael III of Serbia, who was the ruling prince of Serbia at the time.
It was due to his marriage to Princess Anka's granddaughter Natalija Konstantinović, that Mirko, Prince of Montenegro was promised the Serbian crown.
The present day pretender to the defunct throne of Montenegro is a descendant of Anka, and it's via her line that the family of Obrenović continues.
Ivan Novoseltsev
Ivan Petrovich Novoseltsev( born January 23, 1979) is a Russian former professional ice hockey winger.
He is the uncle of Vladislav Namestnikov.
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.
Andrzej Gawroński (actor)
Andrzej Gawroński( born 10 February 1935 in Warsaw, Poland) is a Polish film and theatre actor.
He is the brother of the late actor.
He is also the uncle of, whose husband is.
Katarina Konstantinović
Katarina Konstantinović (Serbian Cyrillic; Катарина Константиновић; 1848–1910) was a Serbian noblewoman and a descendant of the Obrenović dynasty as the daughter of Princess Anka Obrenović.
She was also the first cousin of King Milan I to whom she acted as his "de facto" first lady of the royal court after the Queen, Natalie Keshko, separated from him.
Katarina married twice.
Prior to her first marriage, she was the mistress of her cousin, the Serbian ruler, Prince Mihailo Obrenović III, who was considering a divorce from his childless wife Julia Hunyady de Kéthely to make Katarina his consort.
On 10 June 1868, while she, Prince Mihailo and Princess Anka were strolling through Kosutnjak park near the royal country residence, assassins shot and killed her lover and mother, and left her wounded.
That same year (1868)
she married General Milivoje Blaznavac, by whom she had two children.
Following his death in 1873, she married her cousin Mihailo Bogičević.
Hysen Hoxha
Hysen Efendi Hoxha( 1861–1934) was an Albanian politician, mayor of Gjirokastër, and the uncle of Enver Hoxha.
Anders Frostenson
Anders Frostenson( 23 April 1906 in Loshult, Sweden – 4 April 2006) was a Swedish hymnwriter, priest, and writer.
He was a paternal uncle of Katarina Frostenson.
Bonifazio Bevilacqua Aldobrandini
Bonifazio Bevilacqua Aldobrandini (1571 – April 7, 1627) was an Italian Cardinal.
He was the uncle of Pope Gregory XIV.

Question: Who is Katarina Konstantinović's uncle?
Answer: Miloš Obrenović