Ernest Mayer
Ernest Mayer( born 10 November 1920 in Zgornji Tuhinj, died 17 March 2009) was a Slovenian botanist
He studied Biology at the University of Ljubljana and at the University of Vienna.
From September 1944 to December 1945, he was in the Yugoslav partisans and the Yugoslav People's Army.
In 1947 he finished his studies in Vienna and graduated in botany as the main subject.
In 1947 he was appointed assistant trainee at the Botanical Institute of the University of Ljubljana, in due course becoming assistant, senior assistant, and assistant professor of botany.
In 1956 he became an associate professor in the Natural Sciences and Mathematics Faculty, then a professor of botany at the Biotechnical Faculty in Ljubljana, the job he held until 1978.
Then he transferred to the Jovan Hadži Institute of Biology, Slovenian Academy of Sciences and Arts where he was a senior scientist until his retirement in 1991.
His work primarily focussed on phytogeographic, morphological and taxonomic identification of higher plants that grow on the territory of the former Yugoslavia and the rest of the Balkan Peninsula, with an emphasis on endemics and polymorphism.
He was author or co-author of over 100 scientific papers.
He was a member of many Yugoslav national and international societies and committees.
He was the Regional Adviser on Yugoslavia for the Flora Europaea project up to 1992, and then assistant consultant for its continuation, the Helsinki- based Atlas Florae Europaeae.
He became an associate member of the Slovenian Academy of Sciences and Arts in 1974, and a full member in 1983.
From 1993 he was a regular member of the European Academy of Sciences and Arts.
For his contribution to science he received the Jesenko Prize of the Biotechnical Faculty( 1979) and the Kidrič Award for lifetime achievement( 1986).
Carlos Isaac
Carlos Isaac( born 9 June 1924) represented Argentina at the 1948 Summer Olympics in London.
He was entered in the 100 m and the 4x100 m relay, but did not advance past the heats in either.
His personal best for 100 m was 10.5 seconds, set in 1943.
John McMahon (Surrey and Somerset cricketer)
John William Joseph McMahon( 28 December 1917 – 8 May 2001) was an Australian- born first- class cricketer who played for Surrey and Somerset in England from 1947 to 1957.
Hartley Lobban
Hartley W Lobban (9 May 1926 – 15 October 2004) was a Jamaican-born first-class cricketer who played 17 matches for Worcestershire in the early 1950s.
Kevin Mayer
Kevin Mayer( or, born 10 February 1992) is a French athlete.
He is the world champion( 2017), Olympic silver medalist( 2016 Rio de Janeiro) and world record holder in the Decathlon.
Wesley Barresi
Wesley Barresi( born 3 May 1984) is a South African born first- class and Netherlands international cricketer.
He is a right- handed wicket keeper- batsman and also bowls right- arm offbreak.
Carlos Isaac (footballer)
Carlos Isaac Muñoz Obejero( born 30 April 1998), known as Carlos Isaac, is a Spanish footballer who plays as a right back for Atlético Madrid B.
Wale Adebanwi
Wale Adebanwi( born 1969) is a Nigerian- born first Black Rhodes Professor at St Antony's College, Oxford.
Henry Moore (cricketer)
Henry Walter Moore( 1849 – 20 August 1916) was an English- born first- class cricketer who spent most of his life in New Zealand.
Charles Mayer (composer)
Charles Mayer( 21 March 1799 – 2 July 1862), also known as Carl Mayer or Charles Meyer, was a Prussian pianist and composer active in the early 19th century.

Question: Who was born first, Ernest Mayer or Carlos Isaac?
Answer: Ernest Mayer