Sun Yiwen
Sun Yiwen( born 17 June 1992) is a Chinese fencer.
She competed in the women's épée event at the 2016 Summer Olympics winning the bronze medal.
Markus Weissenberger
Markus Weissenberger( born March 8, 1975) is an Austrian former footballer who played as a midfielder.
He is a younger brother of former Austria international player Thomas Weissenberger.
Alan Chipp
Alan Chipp( born 9 January 1937) is a former Australian rules footballer who played for the Fitzroy Football Club in the Victorian Football League( VFL).
He is a younger brother of politician Don Chipp.
Zoran Švonja
Zoran Švonja( born 4 October 1995) is a Serbian football midfielder who plays for Bulgarian club Lokomotiv Sofia.
He is younger brother of Goran Švonja.
Vadim Vlasov
Vadim Nikolayevich Vlasov( born 19 December 1980) is a former Russian football player.
He is a younger brother of Dmitri Vlasov.
Miloš Zličić
Miloš Zličić( born 29 December 1999) is a Serbian football forward.
He is a younger brother of Lazar Zličić.
Dmitri Varfolomeyev (footballer, born 1978)
Dmitri Nikolayevich Varfolomeyev( born 15 March 1978 in Leningrad) is a former Russian football player.
He is a younger brother of Sergei Varfolomeyev.
Anton Shunto
Anton Shunto( born 31 May 1988) is a Belarusian professional footballer.
As of 2019, he plays for Molodechno.
He is a younger brother of Denis Shunto, who is a founder and former president of Krumkachy Minsk.
Vasily Sleptsov
Vasily Alekseyevich Sleptsov,( July 31, 1836 – April 4, 1878), was a Russian writer, playwright and social reformer.
Roman Smishko
Roman Smishko is a retired Ukrainian professional footballer who played as a goalkeeper.
He is a younger brother of Ukrainian defender Bohdan Smishko.

Question: Who is younger, Sun Yiwen or Vasily Sleptsov?
Answer: Sun Yiwen