Ralph Dupas
Ralph Dupas( October 14, 1935 – January 25, 2008) was an American boxer from New Orleans who won the world light middleweight championship.
Young Erne
Young Erne is an American boxer from Philadelphia, Pennsylvania.
In his first 36 fights, he had a record of 28- 2-6.
Robert Garcia (American boxer)
Roberto Garcia Cortez( born January 29, 1975), best known as Robert Garcia, is a Mexican- American former professional boxer who competed from 1992 to 2001, and held the IBF junior lightweight title from 1998 to 1999.
He has since worked as a boxing trainer, and was voted Trainer of the Year by" The Ring" magazine in 2011, and by the Boxing Writers Association of America in 2012.
He is the older brother of professional boxer Mikey Garcia, who is a world champion in four weight classes.
Tallon Griekspoor
Tallon Griekspoor( born 2 July 1996) is a Dutch tennis player.
Griekspoor has a career high ATP singles ranking of 161 achieved on 16 September 2019.
He also has a career high ATP doubles ranking of 287 achieved on 1 August 2016.
Griekspoor made his ATP main draw debut at the 2017 ABN AMRO World Tennis Tournament in the singles draw against Gilles Müller.
A year later, he defeated Grand Slam champion Stan Wawrinka of Switzerland in three sets to reach the second round.
In 2019 Griekspoor defeated the number 11 in the world, Karen Khachanov, in the first round.
He is the younger brother of former tennis player Scott Griekspoor.
Wayne Johnsen
Wayne Johnsen( born September 7, 1977) is a professional American boxer.
Craig Snyder (boxer)
Craig Snyder( born December 25, 1964) is a retired American boxer.
Rubin Williams
Rubin Williams( born April 9, 1976 in Detroit, Michigan) is an American boxer.
Wilbert McClure
Wilbert McClure( born October 29, 1938) is an American boxer.
Frankie Covelli
Frankie Covelli( May 4, 1913 – February 16, 2003) was an American boxer from Brooklyn New York.
Julian Letterlough
Julian Letterlough( December 25, 1969 – July 8, 2005) was an American boxer from Harrisburg, Pennsylvania.
Known as" Mr. KO", Letterlough was boxer who was often featured on ESPN.

Question: Were Tallon Griekspoor and Robert Garcia (American Boxer) from the same country?
Answer: no