I am looking for the family of my grandfather Arthur Blum Unger - his siblings that I know of, are: Johanna Blum (died in Auschwitz, Poland) March 12, 1943 at age 52. Gertrude Blum, Ruth Blum, Arthur Blum and others unknown.
I know one of the siblings (female) lived in Boivia with her husband at one time in her life. My grandfather Arthur Blum left Germany to Buenos Aires, Argentina netween 1908-1910. He moved to Concepcion, Chile where he maerried and had 7 children.
One of the daughters of these siblings went to compete at the Munich Olympics in 1964. Perhaps Track & Field.
The father of my grandfather Arthur Bum is: Heinrich Hermann Blum Born 27 October 1864 in Razzkow, Poland, and died in Berlin 3 March 1904 of a heart attack. His jewish name was: Abraham Raszkow Jaim
The mother of my grandfather Arthur Bum is: Johanna Blum neé Unger, born in Zerkow, Poland 12 January 1866 and died in Berlin 24 January 1933 of a heart attack.