Johann Christian von Engel
Johann Christian von Engel( 1770 – 1814) was a Hungarian historian.
Otto Christian von Rohr
Major General Otto Christian von Rohr( died 1839) was a Prussian army officer during the Napoleonic Wars.
Hans Ernst Otto Christian von Rohr
Hans Ernst Otto Christian von Rohr( 1726–1778) was a Prussian officer during the Seven Years' War.
Johann Christian von Mannlich
Johann Christian von Mannlich (2 October 1741 – 3 January 1822) was a German painter and architect.
Valentina Cozma
Valentina Cozma( born 14 August 1963) is a retired Romanian handball player, considered one of the best pivots in the history of Romanian handball.
Johann Christian von Boyneburg
Johann Christian von Boyneburg (April 12, 1622 - December 8, 1672) was a German politician.
Karl Christian von Langsdorf
Karl Christian von Langsdorf, also known as Carl Christian von Langsdorff( 18 May 1757 in Nauheim – 10 June 1834 in Heidelberg), was a German mathematician, geologist, natural scientist and engineer.
Christian von Alvensleben
Christian von Alvensleben( born 1941) is a German photographer.
Christian von Koenigsegg
Christian Erland Harald von Koenigsegg( born 2 July 1972) is the founder and CEO of the Swedish high- performance automobile manufacturer Koenigsegg Automotive AB.
In 1994, Koenigsegg launched the" Koenigsegg project" which eventually became Koenigsegg Automotive AB.
Designer David Crafoord provided a design concept following Koenigsegg ’s guidelines.
The prototype enabled the foundation of Koenigsegg Automotive AB.
Koenigsegg and his wife, Halldora von Koenigsegg, are active in the company's management.
Paul von Buri
Paul Friedrich Christian von Buri (1 June 1860 – 7 August 1922) was a German diplomat who served as the Consul-General for Australia and in Shanghai.

Question: Are Christian Von Koenigsegg and Valentina Cozma of the same nationality?
Answer: no