Carl Johan Bernadotte
Carl Johan Arthur Bernadotte, Prince Bernadotte, Count of Wisborg, (31 October 1916 – 5 May 2012) was the fourth son and fifth and youngest child of King Gustaf VI Adolf of Sweden and his first wife Princess Margaret of Connaught.
He was born a Prince of Sweden and granted the title of Duke of Dalarna but renounced these titles to marry a commoner.
He was a paternal uncle of King Carl XVI Gustaf of Sweden and a maternal uncle of Queen Margrethe II of Denmark and Queen Anne-Marie of Greece.
Carl Johan Wachtmeister
Count Carl Johan Wachtmeister (1 February 1903 – 22 May 1993) was a Swedish Army colonel and fencer.
He served as commanding officer of Norrland Dragoon Regiment (1952–1957) and the Stockholm Defence District (1957–1963).
Carl Snoilsky
Count Carl Johan Gustaf Snoilsky (8 September 1841 – 19 May 1903) was a Swedish lyric poet, known for his realist poetry.
Axel Carl Johan Gustafson
Axel Carl Johan Gustafson( born c. 1847) was a Swedish- American author.
Hugo Cedergren
Carl Axel Hugo Cedergren( 1891-1971) was an early Swedish Scouting executive, who ran the KFUK- KFUMs Scoutförbund YMCA Scout Association from 1934 to 1945.
Cedergren married Countess Elsa Victoria Bernadotte of Wisborg in 1929.
The Cedergrens are buried in the Bernadotte family grave at the North Cemetery in Stockholm.
At 102 years, 11 months and 14 days, Mrs.( 1893 – 1996) is to date the oldest member of the Bernadotte family.
In 1935, Cedergren was awarded the 12th" Silver Wolf", the highest commendation of Swedish Scouting.
Carl Johan Billmark
Carl Johan Billmark( 1804 – 70) was a Swedish landscape painter.
Carl Bergman
Carl Johan Arvid Bergman( born 10 October 1987) is a retired Swedish tennis player.
Gunnila Bernadotte
Gunnila Märta Louise Bernadotte, Countess of Wisborg( 12 May 1923 – 12 September 2016) was a Swedish countess.
The daughter of, she was first married to in 1942; the couple had three children together.
Following his death, on 29 September 1988 in Copenhagen she became the second wife of Count Carl Johan Bernadotte, a widower and the youngest son of Gustaf VI Adolf.
Via her marriage to Bernadotte she became nobility in Luxemburg.
In 2010, Bernadotte gifted her with the house in Båstad, built many years earlier for himself and his first wife, Kerstin Wijkmark.
He died in 2012.
Carl Gustaf Mannerheim (naturalist)
Count Carl Gustaf Mannerheim( August 10, 1797 in Askainen, Finland to October 9, 1854 in Stockholm, Sweden) was a Finnish entomologist and governor of the Viipuri province in the Grand Duchy of Finland.
He was the son of Count Carl Erik Mannerheim( 1759 – 1837), the first Prime Minister of Finland.
Princess Margaret of Connaught
Princess Margaret of Connaught
(Margaret Victoria Charlotte Augusta Norah; 15 January 1882 – 1 May 1920) was Crown Princess of Sweden and Duchess of Scania as the first wife of the future King Gustaf VI Adolf.
She was the elder daughter of Prince Arthur, Duke of Connaught, third son of Queen Victoria of the United Kingdom, and his wife Princess Louise Margaret of Prussia.
Known in Sweden as Margareta, she died 30 years before her husband's accession to the throne of Sweden.

Question: What nationality is Carl Johan Bernadotte's mother?
Answer: United Kingdom