Birth:         Jun 1873, Nebraska
Father:        Gustav DUERFELDT (1826-)
Mother:        Louisa (1834-1900)
In the 1900 census Edward and Elizabeth are living in Barada, Richardson, Nebraska.  Lizzie states that she has given birth to two children, Raymond and Esther.  They have been married for three years.  Also in the household is Edwards father Gustav born in Germany in Dec. 1826 and listed as a widow.  Gustav states that he has been in the US since 1846.  There are several Duerfeldt families living in close proximate that may be brothers or uncles. 
In the 1920 and 1930 census Edward and his family, all born in Nebraska had moved to Spring Valley, Gregory, South Dakota.  Edward was farming with the assistance of his son.
Spouse:        Elizabeth Julia HOOS
Birth:         Jan 1875, Nebraska
Father:        Charley HOOS (1832-)
Mother:        Margeretha (1842-)
Children:      Raymond (1897-1972)
               Esther (1899-)
               Naomi (1901-1981)
               Leta Emma (1905-2002)
               Blanche Irma (1908-1986)
               Luella Minnie (1911-2000)
1.1 Raymond DUERFELDT
Birth:         1 Jul 1897, Fall City, Nebraska
Death:         Jan 1972, Burke, Gregory, South Dakota
Raymond and Olga are living in Ellston Twp, Gregory in 1930.
Spouse:        Olga H. STAACK
Birth:         22 Jun 1895, Iowa
Death:         Jul 1981
Marr:          22 Dec 1917, Grant, Gregory, South Dakota
Children:      Living
1.2 Esther DUERFELDT
Birth:         1899, Nebraska
Birth:         18 Nov 1901, Falls City, Richardson, Nebraska
Death:         18 Oct 1981, Rapid City, Pennington, South Dakota
Spouse:        Robert J. WILLIAMSON
Birth:         1898, Iowa
Death:         10 Nov 1948, Pennington, South Dakota
In the 1920 census, newlyweds Robert and Naomi are living in Spring Valley, Gregory, South Dakota.  Rober is farming.
Marr:          19 Feb 1919, Herrick, Gregory, South Dakota
1.4 Leta Emma DUERFELDT
Birth:         15 Sep 1905, Nebraska
Death:         9 Aug 2002, Butte, South Dakota
Burial:        Black Hills National Cemetery, South Dakota
In the 1930 census prior to her marriage Leta was living as a boarder with the Mullenix family who also lived adjacant to the Mutchler's.  This might be when Leta and Ira met as they were married shortly afterwards.
Spouse:        Ira MUTCHLER
Birth:         13 Feb 1895, Yankton, South Dakota
Death:         Oct 1965, Butte, South Dakota
Burial:        Black Hills National Cemetery, South Dakota
Father:        Henry John MUTCHLER (1862-)
Mother:        Mary Frances CHRISTY (1863-)
Marr:          8 Jul 1930, Gregory, South Dakota
1.5 Blanche Irma DUERFELDT
Birth:         24 Feb 1908, Nebraska
Death:         19 Aug 1986
Burial:        Black Hills National Cemetery, South Dakota
Spouse:        Peter Herman ROSTAD
Birth:         4 Feb 1895, Lincoln Co, South Dakota
Death:         23 Sep 1952, Fall River, South Dakota
Burial:        Black Hills National Cemetery
Father:        Paul A. ROSTAD
Mother:        Hanna Marie AGDENES
Marr:          3 Feb 1932, Douglas, Gregory, South Dakota
1.6 Luella Minnie DUERFELDT
Birth:         23 Jan 1911, Omaha, Nebraska
Death:         21 Mar 2000, Barrington, IL
Burial:        1999, Ridgewood Cemetery, Lake Co, Il
Spouse:        Alfred CHRISTENSEN
Birth:         16 Dec 1897, Pittsburgh, PA
Death:         23 Aug 1964, Barrington, Lake Co.
Burial:        1964, Ridgewood Cemetery, Lake Co, Il
Father:        Jens Marinus CHRISTENSEN (1858-1932)
Mother:        Johanne Marie POULSEN (1865-1928)
Marr:          19 Jun 1933, Burke, South Dakota
Children:      Living