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 Öberg died in 1949.
Sigfrid Lundberg died in 1979.
Sigfrid Karg-Elert died in 1933.
Sigfrid Henrici died on 1964-11-08.
Sigfrid Tor died on July 31, 1990, in Malmo, Sweden.
Sigfrid Lindberg was born in 1897.
Sigfrid Öberg was born in 1907.
Sigfrid Mohn was born in 1930.