Sigfrid Siwertz died on November 26, 1970.
Sigfrid Siwertz's birth name is Per Sigfrid Siwertz.
Sigfrid Siwertz was born on January 24, 1882, in Stockholm, Sweden.
Sigfrid Siwertz has written: 'Att vara ung' 'Episodernas hus' 'Pagoden' 'Slottsfinal'
Sigfrid Lindberg died in 1977.
Sigfrid Lundberg died in 1979.
Sigfrid Öberg died in 1949.
Sigfrid Henrici died on 1964-11-08.
Sigfrid Karg-Elert died in 1933.
Sigfrid Tor died on July 31, 1990, in Malmo, Sweden.
Sigfrid Mohn was born in 1930.
Sigfrid Lindberg was born in 1897.
Sigfrid Öberg was born in 1907.