José Silva (footballer, born 1905)
José da Silva was a Portuguese footballer.
Gustavo da Conceição
Gustavo Dias Vaz da Conceição( born 8 March 1957 in Luanda) is a former Angolan basketball player.
Conceição, a small forward, competed for Angola at the 1980 Africa Basketball championship, an event that marked Angola's debut in the African competition arena and at the 1986 FIBA World Championship.
He is a brother of Angola senior police officer Fernando Torres Vaz da Conceição aka Mussolo and of Aldemiro Justino de Aguiar Vaz da Conceição, a longtime spokesman for the President and now the President's secretary for Regional Affairs.
From December 2004 to December 2012, he served two terms as chairman of the Angolan Basketball Federation.
As of May, 2005, Gustavo da Conceição has been serving a second term as chairman of the Angolan Olympic Committee.
Conceição is also a member of the Angolan parliament for the ruling party MPLA.
Alec McCowen
Alexander Duncan McCowen,( 26 May 1925 – 6 February 2017) was an English actor.
He was known for his work in numerous film and stage productions.
Alexander Langmuir
Alexander Duncan Langmuir( 12 September 1910 – 22 November 1993) was an American epidemiologist.
He is renowned for creating the Epidemic Intelligence Service.
José da Silva (sport shooter)
José da Silva was a Portuguese sports shooter.
He competed in the 50 m rifle event at the 1948 Summer Olympics.
Alexander Duncan (footballer)
Alexander L. Duncan( born 1891) was a Scottish professional footballer who played as a Winger.
Elivelton José da Silva
Elivelton José da Silva( born 21 January 1992) is a Brazilian footballer who plays as a midfielder.
Alex McEachern
Alexander Duncan McEachern( born September 27, 1939) is a former provincial level politician from Alberta, Canada.
He served as a member of the Legislative Assembly of Alberta from 1986 to 1993.
Emerson José da Conceição
Emerson José da Conceição( born August 3, 1982 in Rancharia), known as Emerson or Emerson Conceição, is a Brazilian footballer who plays for Londrina as Goalkeeper.
Alexander Duncan (police officer)
Alexander Mitchell Duncan CMG( 25 September 1888 –1 September 1965) was a Scottish- Australian police officer.
Duncan was Chief Commissioner of Victoria Police from 1937 to 1954.

Question: Who is younger, Alexander Duncan (Police Officer) or Emerson José Da Conceição?
Answer: Emerson José Da Conceição