David Singer (poker player)
David Singer( born in Brooklyn, New York) is an American professional poker player and former attorney.
Miloš Zličić
Miloš Zličić( born 29 December 1999) is a Serbian football forward.
He is a younger brother of Lazar Zličić.
David Louis Band
David Louis Band or David L. Band (9 January 1957 – 16 March 2009) was an astronomer who studied the theory of gamma-ray bursts.
J. David Singer
J. David Singer( December 7, 1925, New York City – December 28, 2009, Ann Arbor, Michigan) was an American professor of political science.
He held a bachelor's degree from Duke University and a doctoral degree from New York University.
Dafydd Nicolas
Dafydd Nicolas, or David Nicholas( c.1705 – 8 February 1774) was a Welsh poet.
Dave Bonawits
Dave Bonawits( or David Bonawits) is an American actor, cinematographer, editor, and television host of" FishCenter Live".
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.
Ruth Chiquet-Ehrismann
Ruth Chiquet-Ehrismann (9 November 1954 – 4 September 2015) was a Swiss biochemist and cell biologist working on interactions in the extracellular matrix.
Vadim Vlasov
Vadim Nikolayevich Vlasov( born 19 December 1980) is a former Russian football player.
He is a younger brother of Dmitri Vlasov.
David ben Naphtali Fränkel
David ben Naphtali Fränkel or David Hirschel Fränkel( 1704 – 4 April 1762), was a German rabbi.

Question: Who is younger, J. David Singer or Ruth Chiquet-Ehrismann?
Answer: Ruth Chiquet-Ehrismann