Jacob Palmstierna
" Friherre" Carl Jacob Palmstierna( 28 April 1934 – 22 April 2013) was a Swedish banker.
He was CEO of Skandinaviska Enskilda Banken( SEB) from 1976 to 1989.
Stanisław Stefański
Stanisław Stefański( born 24 August 1947, in Gdańsk) is a sailor from Poland.
Perlicki represented his country at the 1972 Summer Olympics in Kiel.
Perlicki took 8th place in the Soling with Zygfryd Perlicki as helmsman and Józef Błaszczyk as fellow crew member.
Józef Pszenny
Józef Pszenny( born March 17, 1910 in Pruszyn, February 3, 1993 in Chicago)- Polish military commander, sapper captain of Polish Army, head of the Sapper Department of" XII- s" Warsaw District of Home Army.
Sequin and Knobel
Sequin and Knobel, or Séquin and Knobel were a Swiss firm of architects notable for the design of industrial building such as cotton mills and weaving sheds.
It was formed in 1895.
The partners were Carl Arnold Séquin and Hilarius Knobel.
Together they were responsible for over 250 industrial buildings.
Carl Jacob Burckhardt
Carl Jacob Burckhardt (September 10, 1891 – March 3, 1974) was a Swiss diplomat and historian.
His career alternated between periods of academic historical research and diplomatic postings; the most prominent of the latter were League of Nations High Commissioner for the Free City of Danzig (1937–39) and President of the International Committee of the Red Cross (1945–48).
Carl Jacob Hammarsköld
Carl Jacob Hammarsköld( 1833 – 1884), also known as Charles J. Hammarskold, was a member of the prominent Hammarskjöld family, who in 1850 followed his father to the United States.
He became an ironmaster and U.S. Postmaster in North Carolina.
When the American Civil War began, he was commissioned in the Confederate States Army, resigning as lieutenant colonel after the Seven Days Battles.
Hammarsköld returned to his old homeland in 1863, where he made a successful, albeit short, career as a railwayman, dying at the age of 50.
Carl Jacob Bender
Carl Jacob Bender was missionary pioneer to Cameroon.
Roman Hurej
Roman Hurej was a Polish luger who competed in the mid-1970s.
He and Józef Pietrończyk won the bronze medal in the men's doubles event at the 1974 FIL European Luge Championships in Imst, Austria.
Carl Petersén (born 1883)
Carl Jacob Karsten Petersén (18 April 1883 – 14 April 1963) was a Swedish Army officer.
During World War II he served as head of the intelligence agency C-byrån.
Carl Jacob Arnholm
Carl Jacob Arnholm( 18 December 1899 – 15 September 1976) was a Norwegian jurist.
He was born in Oslo as a son of civil servant Carsten Johannes Andersen( 1865 – 1950) and Gunvor Henriksen( 1866 – 1940).
He finished his secondary education in Kristiania in 1917, and graduated with the cand. jur. degree in 1921.
After one year as deputy judge he worked as a junior solicitor from 1923.
From 1927 he was entitled to work with Supreme Court cases.
In 1930 he was hired as research fellow at the Royal Frederick University, and took the dr.juris degree already in 1931, on the thesis" Betingelsene for testamenters gyldighet efter norsk rett".
He was then a professor from 1933 to 1968.
He served as dean of the Faculty of Law from 1945 to 1951, and in the same period he was deputy chairman of the university collegium( board).
During the German occupation of Norway Arnholm had been imprisoned.
When the Nazi authorities were about to change the rules for admission to the university in autumn 1943, a protest ensued.
In retaliation, the authorities arrested 11 staff, 60 male students and 10 female students.
The staff Johannes Andenæs, Eiliv Skard, Johan Christian Schreiner, Harald Krabbe Schjelderup, Anatol Heintz, Odd Hassel, Ragnar Frisch, Bjørn Føyn, Endre Berner and Carl Jacob Arnholm were sent to Grini concentration camp.
Arnholm was first incarcerated at Bredtveit from 15 October to 22 November, then at Berg until 8 December, then at Grini until 5 May 1945.
He became a Christian during his time as a prisoner.
Arnholm was also a" judicial advisor" in the association Norwegian Brewers from 1933 to 1968, and was an Acting Supreme Court Justice in several periods between 1935 and 1939.
He was elected as a member of the Norwegian Academy of Science and Letters in 1936, and held honorary degrees at Stockholm College( 1957) and the University of Copenhagen( 1959).
He was appointed as a Commander of the Royal Norwegian Order of St. Olav in 1961, and a Commander of the Order of the Dannebrog and a Commander of the Order of the Polar Star.
He did not marry, and died in September 1976 in Oslo.

Question: Were Carl Jacob Burckhardt and Józef Pszenny of the same nationality?
Answer: no