Jan Kleyn
Jan Kleyn( 18 April 1925 – 1 April 2009) was a Dutch sprinter.
He competed at the 1948 Summer Olympics in the 100 m event, but failed to reach the final due to an injury.
Kleyn won three national titles in the 100 m and 200 m events in 1947 and 1949.
He set two national records in the 4 × 200 m relay and competed in nine international matches.
Being an officer of the Dutch Royal Airforce, he won the 100 m and 200 m events at the 1946 and 1947 Inter- Allied Athletics Championships.
After retiring from competitions he worked as the sales director of a major insurance company; in parallel, he was chairman of the technical committee of the Dutch track and field federation( 1962 – 1972).
Nelson Martínez
Nelson Alberto Martínez Sevilla( born October 25, 1991 in Quito) is an Ecuadorian football midfielder.
A product of the LDU Quito's youth system, he began making senior club appearances for Liga in 2010.
In his professional debut against Independiente del Valle, he ran into defender Armando Wila, fracturing his cheekbone.
The injury required Martínez to undergo surgery.
In June 2011, he was loaned to Aucas.
Dugès
Several people share the surname Dugès:
Lacordaire
Several people share the surname Lacordaire:
List of Cumbia Ninja episodes
" Cumbia Ninja" is a Colombian supernatural, mystery- thriller television series created for Fox by Andrés Gelós and produced by Nelson Martínez and María Gowland.
The series premiered on Fox on September 5, 2013, and the first season concluded on November 13, 2013.
In January 2014, Fox renewed the series for a second season which aired from October 2, 2014.
The series is produced by Fox Networks Group and Fox Telecolombia.
George Augustus
Multiple people share the name George Augustus:
Nelson Martínez (politician)
Nelson Martínez( 15 July 1951 – 12 December 2018) was a Venezuelan politician who served as the Minister of Petroleum( 2017) and President of PDVSA( 2017).
Nelson Martínez (politician)
Nelson Martínez( 15 July 1951 – 12 December 2018) was a Venezuelan politician who served as the Minister of Petroleum( 2017) and President of PDVSA( 2017).
1988 Vitosha New Otani Open – Doubles
Conchita Martínez and Barbara Paulus won in the final 1 – 6, 6 – 1, 6 – 4 against Sabrina Goleš and Katerina Maleeva.
2001 Bausch & Lomb Championships – Doubles
Conchita Martínez and Patricia Tarabini won in the final 6 – 4, 6 – 2 against Martina Navratilova and Arantxa Sánchez- Vicario.

Question: Did Nelson Martínez and Jan Kleyn share the same nationality?
Answer: no