1870 United States Federal Census
Birth: abt 1859 in Illinois
Home in 1870: Minonk, Woodford, Illinois
Race: White
Household Members:
Jacob Rapp 53
Catherine Rapp 45
Mary Rapp 15
John Rapp 13
Elizabeth Rapp 11 [Sophia]
Edwin Rapp 7
Emma Rapp 5
Henry Rapp 3
Fredrick Rapp 22 (farmhand b. Hannover, Ger.)

1880 United States Federal Census
Home in 1880: Nebraska, Livingston, Illinois
Marital Status: Married
Spouse's Name: Peter Walter
Father's Birthplace: Baden
Mother's Birthplace: France ?
Occupation: Keeping House; farm wife
Household Members:
Peter Walter 29
Sopha Walter 24
Jacob Walter 5
Fred Walter 3
Emma Walter 1

1900 United States Federal Census
Birth Date: Nov 1858
Home in 1900: Glenville, Clay, Nebraska
Marriage Year: 1875; Years Married: 25
Household Members:
Peter Walther 51 (b. July 1848)
Sophia E Walther 41 (b. Nov 1858)
Jacob Walther 25 (b. Mar 1875)
Daniel Walther 19 (b. Sep 1880)
Charles W Walther 16 (b. Nov 1883)
Minnie M Walther 12 (b. Dec 1887)
Peter Walther 9 (b. June 1890)
Tillie S Walther 7 (b. July 1892)

1910 United States Federal Census
Home in 1910: Glenville, Clay, Nebraska
Marital Status: Widowed
Native Tongue: English
Occupation: Own Income
Home Owned or Rented: Owned, Mortgage-Free
Able to Read and Write: Yes
Number of Children Born: 12
Number of Children Living: 8
Household Members:
Sophia E Walters 51 (own income)
Jacob Walters 35 (farm laborer, working out)
Peter Walters 19 (farm laborer, working out)

1920 United States Federal Census
Home in 1920: Glenville, Clay, Nebraska
Household Members:
Sophie Walthers 61
Jake Walthers 43 (son)
Peter Walthers 29 (son)

U.S., Evangelical Lutheran Church of America, Records, 1875-1940
Name: Sophia Elizabeth Walther
Event Type: Burial
Death Date: 30 Nov 1922
Burial Date: 3 Dec 1922
Church Name: Immanuel
Church Location: Glenvil, Nebraska

Source: Childrens' Confirmation Records from U.S., Evangelical Lutheran Church of America, Records, 1875-1940
Ancestry.com Family Trees (not always accurate)
Name: Sophia Elizabeth Rapp
Birth: 27 Nov 1858 - Bureau County, Illinois
Death: 30 Nov 1922 - Glenvil, Clay, Nebraska
Father: Jacob Rapp (1820-1897)
Mother: Catherine Swartz (1824-1871)
Spouse: Peter Walther (1848-)
Married: 1875
Children:
Jacob (2 Mar 1875 - )
Friedrich Eduard (25 Jan 1877 - )
Emma Caroline (19 Oct 1878 - )
Daniel (24 Sep 1880 - )
Charles W (17 Nov 1883 - )
Mina "Minnie" Margaretha (1887-)
Peter (19 Jun 1890 - )
Matilda Sophia (12 Jul 1892 - )
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Researching below: ??????

Another tree lists these as children:
Jacob (1875-1946)
Friederick Edward (1877-1956)
Ema Karolyn (1878-1917)
Daniel (1880-)
Heinrich (1882-1882)
Charles "Carl" William (1883-1973)
John (1886-1886)
Mina (1887-1962)
Peter (1890-1958)
Mathilda Sofi (1892-)
_____ (1893-1893)
_____ (1902-1902)

Another tree lists these children:
Jacob (1875-1946) 
Sate (1876-) 
Friederick Edward (1877-1956) 
Emma Karolyn (1878-1917) 
Daniel (1880-1952) 
Heinrich (1882-1882) 
Charles W (1883-1973) 
John (1886-1886) 
Mina"Minnie" Marthetha (1887-1962) 
Peter (1890-1958) 
Mathilde "Tillie" Sophia (1892-) 
_____ (1893-1893) 
_____ (1902-1902)

The 1900 and 1920 censuses both show she had 12 children, 8 living. Some do not show up on any census records.