Ivan Lyakh
Ivan Vasilyevich Lyakh( born 14 January 1960) is a Russian professional football coach and a former player.
He is the father of Andrei Lyakh.
Nikolai Nesterenko
Nikolai Vladimirovich Nesterenko( born 17 December 1984) is a Russian professional footballer.
He is the older brother of Andrei Nesterenko.
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 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.
Hysen Hoxha
Hysen Efendi Hoxha( 1861–1934) was an Albanian politician, mayor of Gjirokastër, and the uncle of Enver Hoxha.
Andrey Markov Jr.
Andrey Andreyevich Markov Jr.
(St. Petersburg, September 22, 1903 – Moscow, October 11, 1979) was a Soviet mathematician, the son of the Russian mathematician Andrey Andreyevich Markov Sr, and one of the key founders of the Russian school of constructive mathematics and logic.
He made outstanding contributions to various areas of mathematics, including differential equations, topology, mathematical logic and the foundations of mathematics.
His name is in particular associated with Markov's principle, Markov's rule, and Markov algorithm.
An important result which he proved in 1947 was that the word problem for semigroups was unsolvable; Emil Post obtained the same result independently at about the same time.
In 1953 he became a member of the Communist Party.
In 1960, Markov obtained fundamental results showing that the classification of four-dimensional manifolds is undecidable: no general algorithm exists for distinguishing two arbitrary manifolds with four or more dimensions.
This is because four dimensional manifolds have sufficient flexibility to allow us to embed any algorithm within their structure, so that classification of all four-manifolds would imply a solution to Turing's halting problem.
This result has profound implications for the limitations of mathematical analysis.
Andrey Markov
Andrey Andreyevich Markov (1856–1922) was a Russian mathematician best known for his work on stochastic processes.
A primary subject of his research later became known as Markov chains and Markov processes.
Markov and his younger brother Vladimir Andreevich Markov (1871–1897) proved the Markov brothers' inequality.
His son, another Andrei Andreyevich Markov (1903–1979), was also a notable mathematician, making contributions to constructive mathematics and recursive function theory.
Bradley Orr
Bradley James Orr( born 1 November 1982) is an English retired footballer.
He is the uncle of Rangers defender Jon Flanagan.
Ivan Novoseltsev
Ivan Petrovich Novoseltsev( born January 23, 1979) is a Russian former professional ice hockey winger.
He is the uncle of Vladislav Namestnikov.

Question: Who is Andrey Markov Jr.'s uncle?
Answer: Vladimir Andreevich Markov