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.
Valter Thomé
Valter Thomé (5 August 1874 – 1 February 1918) was a Finnish architect who worked in the National Romantic or Art nouveau style.
Art Mathisen
Arthur Fremont Mathisen( February 27, 1920 – January 5, 2004) was an American college basketball standout for Illinois in the 1940s.
A center, Mathison led the Fighting Illini in rebounding while scoring over 500 points in his three years of varsity play earning a varsity letter each year.
Graduating from Dwight High School, Mathisen was the son of James Mathisen and Mary( Jensen) Mathisen, marrying Virginia Mae DeLong in 1946.
While in high school, Mathisen led his basketball team to the Sweet Sixteen of the IHSA state tournament in 1939.
Mathisen enrolled at the University of Illinois in the fall of 1939, playing on the freshman basketball team.
In his sophomore year he was the starting center of the 1940 – 41 Fighting Illini team that finished third in the Big Ten with a 13 – 7 record.
As a junior, Mathisen maintained his starting center role on a team that finished as conference champions and an overall record of 18 – 5.
The pinnacle of his career was be the 1942 – 43 season, Mathisen was named team captain and the Illini finished their schedule with an overall record of 17 and 1, and a conference record of 12– 0.
This team was not only a Big Ten champion, they were also named a Premo- Porretta National Champion.
Even though they were ranked# 1 in the nation, Illinois elected not to play in the 1943 NCAA Basketball Tournament because three starters were drafted into active duty.
Miloš Zličić
Miloš Zličić( born 29 December 1999) is a Serbian football forward.
He is a younger brother of Lazar Zličić.
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.
Vadim Vlasov
Vadim Nikolayevich Vlasov( born 19 December 1980) is a former Russian football player.
He is a younger brother of Dmitri Vlasov.
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.
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.
Birger Maertens
Birger Maertens( born 28 June 1980 in Bruges) is a Belgian footballer who currently plays for Westhoek.
He plays at centre back and has obtained two caps for the Belgian national team.
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.

Question: Who is younger, Birger Maertens or Art Mathisen?
Answer: Birger Maertens