Haithem Mahmoud
Haithem Fahmy Mahmoud( born 23 September 1991) is a Greco- Roman wrestler from Egypt who competes in the 59 kg category.
He took up wrestling in 2000 and won the African Championships in 2014 and 2015.
At the 2016 Olympics he was eliminated in the first bout.
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.
Yousuf Adam Mahmoud
Yousuf Adam Mahmoud or Yousef Adam( born 12 September 1972) is a Qatari- Somalian former football player and current manager of Al Kharaitiyat.
He is the first Qatari football manager to have coached in Africa.
He also competed in the men's tournament at the 1992 Summer Olympics.
Declan Patton
Declan Patton( born 23 May 1995) is a rugby league footballer who plays as a or for the Warrington Wolves in the Super League and the England Knights at international level.
He has spent time on loan from Warrington at the Rochdale Hornets in League 1 and the Championship.
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.
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.
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.
Vadim Vlasov
Vadim Nikolayevich Vlasov( born 19 December 1980) is a former Russian football player.
He is a younger brother of Dmitri Vlasov.

Question: Who is younger, Haithem Mahmoud or Declan Patton?
Answer: Declan Patton