My husband's maternal grandfather was Sven Kjellberg. When he immigrated to America the spelling was changed to Kellberg, b. 1898; d. 1961. The family settled in Pittsburgh, PA. He married Matilda Uddstrom, b. 1876; d. 1907, whose family had also settled in Pittsburgh, PA. They both immigrated from Sweden.
Sven was the son of Anton Kejellberg, b.7 Jan. 1848 in Ljuns, Sweden and d. 9 August 1908 in Pittsburgh, PA. He was the son of Sven Kjellberg b. 5 July 1787 in Sweden.
My husband (Edward Dewey) went to Sweden with Sven about 1948 to visit family.