1900 SD CENSUS –Tosten Horsten (b Feb 1865, Norway, immigrated 1887, applied for papers, occupation farmer, married 8y) enumerated with wife Mary (b May 1873, Norway, immigrated 1888, mother of 4 children) and 4 children, all born in South Dakota, Anton (b Dec 1892), Iver (b Aug 1894), Alma (b Oct 1895) and Selma (b Aug 1898)

1910 SD CENSUS - Torsten [Thorsten] Horton [Horten], age 45, occupation farmer, b. Norway, is enumerated with his wife of 17 years, Marit, age 36, mother of 6 children, b. Norway, along with Anton T., age 17, b. South Dakota, Iver, age 15, b. South Dakota, Alma, age 14, b. South Dakota, Selma, age 11, b. South Dakota, Theodore, age 9, b. South Dakota, and Julia, age 4, b. South Dakota. 

1920 MT CENSUS – Thorsten O. Horton (54y, b Norway, immigrated 1888, applied for papers 1889, occupation farmer) enumerated with wife Mary O. (46y, b Norway, immigrated 1888) and 5 children, all born in South Dakota, Anton (27y), Alma (24y), Theodore (18y), Julia (14y) and Olga (5y) and granddaughter Easter G. Olen (1y9m, b Montana)

1930 OR CENSUS - Thorsten O. Horten, age 65, occupation farm laborer, married at age 28, b. Norway, is enumerated in the home of his son Theodore N., age 29, single, occupation farmer, b. South Dakota, with his wife Mary O., age 56, married at age 19, b. Norway, along with Olga, age 15, b. South Dakota, niece Ester Diew, age 12, g. South Dakota, and nephew Teddy Rohme, age 5, b. Oregon.

Horten
Father
Thorsten O.
1865 - 1932
[shares marker with Mary]

Janseen Compilation
Saucy Survey & Phtographs
OSBH DC (Polk County 1932) #35
1900 SD CENSUS (Minnehaha co, Mapleton, ED 249, sheet 4A-B)

1910 SD CENSUS (Minnehaha Co., Mapleton, ED 320, sheet 1B) 

1920 MT CENSUS (Musselshell co, School District 44, ED 73, sheet 8B)

1930 OR CENSUS (Polk Co., Spring Valley, ED 4. sheet 1A)