Question: Who was born earlier, Franz Viehböck or Jean-François Clervoy?

Context articles: Universe 2 (Silverberg anthology)
Jean-François Revel
Léon Lévy Brunswick
Jean-François Michael
Miniver Cheevy
Boccaccio (operetta)
Jean-François Oeben
Jean-François Clervoy
Lecsinel Jean-François
Franz Viehböck

Universe 2 is an anthology of original science fiction short stories edited by Robert Silverberg and Karen Haber, and illustrated by Jean-François Podevin, the second volume in a series of three, continuing an earlier series of the same name edited by Terry Carr.
 It was first published in hardcover Bantam Books and trade paperback by Bantam Spectra in March 1992.
Jean-François Revel (born Jean-François Ricard; 19 January 192430 April 2006) was a French journalist, philosopher, and a member of the Académie française from June 1998 onwards.
 A socialist in his youth, Revel later became a prominent European proponent of classical liberalism and free market economics.
Léon Lévy Brunswick (20 April 1805, in Paris – 29 July 1859, in Le Havre) was a French playwright.
 He started as a journalist before turning to theater.
 He is the author of many comedies with Jean-François Bayard, Louis-Émile Vanderburch, and Arthur de Beauplan such as "Boccaccio, or the Prince of Palmero" by Franz von Suppé.
 But it is with Adolphe de Leuven that he is known for his greatest successes, notably booklets of comic operas by Adolphe Adam ("Le Brasseur de Preston," "Le Postillon de Lonjumeau," "Le Roi d'Yvetot").
 He has also published under the pseudonym of Leo Lhérie.
Yves Roze better known as Jean-François Michael is a French singer born on 16 April 1946.
 Between 1963 and 1968, he sang under his birth name Yves Roze.
 In 1968, Michel Berger (under his real name Michel Hamburger) wrote "Adieu jolie Candy" that was a hit for Jean-François Michael.
 It sold over one million copies, and was awarded a gold disc.
"Miniver Cheevy" is a narrative poem written by Edwin Arlington Robinson and first published in "The Town down the River" in 1910.
 The poem, written in quatrains of iambic tetrameter for three lines, followed by a catalectic line of only three iambs, relates the story of a hopeless romantic who spends his days thinking about what might have been if only he had been born earlier in time.
Boccaccio, oder Der Prinz von Palermo ("Boccaccio, or the Prince of Palermo") is an operetta in three acts by Franz von Suppé to a German libretto by Camillo Walzel and Richard Genée, based on the play by Jean-François Bayard, Adolphe de Leuven, Léon Lévy Brunswick and Arthur de Beauplan, based in turn on "The Decameron" by Giovanni Boccaccio.
Jean-François Oeben, or Johann Franz Oeben (9 October 1721
Jean-François André Clervoy (born 19 November 1958) is a French engineer and a CNES and ESA astronaut.
 He is a veteran of three NASA Space Shuttle missions.
Lecsinel Jean-François (born 2 October 1986) is a Haitian former footballer who played as a defender.
 He last played for Sheffield United in 2013.
 Born in Cayenne, French Guiana, Jean-François began his career in France with Paris Saint-Germain and Sedan, before a spell in Scotland with Falkirk.
 He returned to France briefly, where he played for Guingamp, before settling in England, with spells at Swindon Town and Sheffield United.
 Qualifying to represent Haiti through his parents, Jean-François made three appearances for the national side.
Franz Artur Viehböck (born August 24, 1960 in Vienna) is an Austrian electrical engineer, and was Austria's first cosmonaut.
 He was titulated "„Austronaut“" by his country's media.
 He visited the Mir space station in 1991 aboard Soyuz TM-13, returning aboard Soyuz TM-12 after spending just over a week in space.