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Theodore Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Roosevelt-County, Montana
Our Model Tree links this Theodore Thompson across the 1920, 1930 and 1940 US Censuses in Roosevelt-County, Montana (XGBoost, ~Confirmed), with identified parents Hunte & Knute — first a son (b.~1911), then head of a 7-person household.
Age 29
b. ~1911
Male
Son
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Roosevelt-County, Montana |
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | School District 13 |
| 1935 Residence (County) | Roosevelt |
| Additional Details | |
| Occupation | Farm Helper |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 166 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | Farm Helper |
| Township / Ward | School District 13 |
| Est. Birth Year | ~1911 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Theodore | Age | Birth yr |
|---|---|---|---|---|
| Danice Thompson | Son | — | 20 | ~1920 |
| Theodore Thompson | Son | — | 29 | ~1911 |
| Levina Thompson | Daughter | — | 23 | ~1917 |
| Josephine Thompson | Spouse | — | 57 | ~1883 |
| Hunte Thompson | Head | — | 58 | ~1882 |
| Raymond Thompson | Son | — | 17 | ~1923 |
| Howard Thompson | Son | — | 12 | ~1928 |
Census Appearances
1920
Roosevelt, Montana
Son, age 9
Roosevelt, Montana · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Theodore O |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Norway |
| Mother's Birthplace | South Dakota |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Roosevelt, Montana
Son, age 19
Roosevelt, Montana · implied b. ~1911 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Norway |
| Mother's Birthplace | South Dakota |
| Occupation | Labor |
| Industry | Home Farm |
| Class of Worker | VV |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Roosevelt-County, Montana
Son, age 29
Roosevelt-County, Montana · implied b. ~1911 — 7 household members
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | School District 13 |
| 1935 Residence (County) | Roosevelt |
| Occupation | Farm Helper |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 166 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Theodore Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Hunte Thompson (~0.92 confidence) and father Knute Thompson (~0.92 confidence) and mother Ingeline Thompson (~0.92 confidence) and mother Josephine Thompson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Hunte Thompson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Knute Thompson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Ingeline Thompson
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Josephine Thompson
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Theodore Thompson
Son · 1940 · age 29 · b. ~1911 · Montana
★ You are viewing this record
Sibling
Raymond Thompson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Thompson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Levina Thompson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Danice Thompson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Roosevelt-County, Montana
Open full size
1940 US Federal Census — Roosevelt-County, Montana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02228-00638)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Herbert A. Ryder | 31 | Head | Farmer | North Dakota |
| 42 | Birgit Ryder | 31 | Wife | — | Montana |
| 43 | Romain A. Ryder | 4 | Son | — | Montana |
| 44 | Margaret L. Ryder | 3 | Daughter | — | Montana |
| 45 | Melvin S. Tobiasen | 34 | Head | Farmer | North Dakota |
| 46 | Bertha M. Tobiasen | 30 | Wife | — | Montana |
| 47 | Wilbur D. Tobiasen | 5 | Son | — | Montana |
| 48 | Freddie O. Tobiasen | 4 | Son | — | Montana |
| 49 | Arlene R. Tobiasen | 2 | Daughter | — | Montana |
| 50 | Edward O. Lien | 54 | Head | Farmer | Minnesota |
| 51 | Clara Lien | 49 | Wife | — | Norway |
| 52 | Milton A. Lien | 17 | Son | — | North Dakota |
| 53 | Clarence M. Benson | 41 | Head | Farmer | Minnesota |
| 54 | Nora Benson | 39 | Wife | — | Montana |
| 55 | Carroll O. Benson | 10 | Son | — | Minnesota |
| 56 | Dorothy Benson | 6 | Daughter | — | Minnesota |
| 57 | Ole Mogen | 80 | Father-in-law | — | Norway |
| 58 | Olena Mogen | 75 | Mother-in-law | — | Iowa |
| 59 | Ole G. Ried | 72 | Head | Farmer | Norway |
| 60 | Emma Ried | 55 | Wife | — | Norway |
| 61 | Hunte O. Thompson | 58 | Head | Farmer | Norway |
| 62 | Josephine Thompson | 57 | Wife | — | South Dakota |
| 63 | Theodore Thompson THIS PERSON | 29 | Son | Farm Helper | Montana |
| 64 | Levina A. Thompson | 23 | Daughter | — | Montana |
| 65 | Danice A. Thompson | 20 | Son | — | Montana |
| 66 | Raymond Thompson | 17 | Son | — | Montana |
| 67 | Howard Thompson | 12 | Son | — | Montana |
| 69 | John Q. Gabbone | 63 | Head | Farmer | Canada |
| 70 | Bernice Gabbone | 64 | Wife | — | Canada |
| 71 | Stewart G. Gabbone | 32 | Son | Farm Helper | Montana |
| 72 | Gerald E. Gabbone | 20 | Head | Farm Helper | Montana |
| 73 | Blanche Gabbone | 20 | Wife | — | Montana |
| 74 | Nick O. P. Mogen | 50 | Head | Farmer | South Dakota |
| 75 | Lora L. Mogen | 32 | Wife | — | Missouri |
| 76 | Lester S. Mogen | 5 | Son | — | Montana |
| 77 | Lloyd C. Mogen | 4 | Son | — | Montana |
| 78 | Luha R. Mogen | 2 | Daughter | — | Montana |
| 79 | Billy L. Mogen | 2 | Son | — | Montana |
| 80 | William May | 60 | Head | Farmer | Missouri |
Related Census Records
Pedigree Summary
Theodore + 4 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)