TJ
Theodore Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Williams-County, North Dakota
Our Model Tree links this Theodore Johnson across the 1920, 1930 and 1940 US Censuses in Williams-County, North Dakota (XGBoost, ~Confirmed), with identified parents Henry & Ludvig — first a son (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Male
Son
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Williams-County, North Dakota |
| Surname | Johnson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Winner Twp. |
| 1935 Residence (County) | Williams |
| Additional Details | |
| Industry | OT |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Winner Twp |
| Est. Birth Year | ~1916 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Theodore | Age | Birth yr |
|---|---|---|---|---|
| Henry Johnson | Head | — | 65 | ~1875 |
| Jay Johnson | Son | — | 16 | ~1924 |
| Russell Johnson | Son | — | 18 | ~1922 |
| Theodore Johnson | Son | — | 24 | ~1916 |
| Julia Johnson | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Williams, North …
Son, age 3
Williams, North Dakota · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Theodor |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | South Dakota |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Williams, North …
Son, age 14
Williams, North Dakota · implied b. ~1916 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | South Dakota |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Williams-County, North …
Son, age 24
Williams-County, North Dakota · implied b. ~1916 — 5 household members
| Surname | Johnson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Winner Twp. |
| 1935 Residence (County) | Williams |
| Industry | OT |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Johnson (~0.92 confidence) and father Ludvig Johnson (~0.92 confidence) and father Henry Johnson (~0.92 confidence) and mother Ruth Johnson (~0.92 confidence) and mother Julia Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Johnson
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Ludvig Johnson
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Henry Johnson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Ruth Johnson
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Julia Johnson
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Theodore Johnson
Son · 1940 · age 24 · b. ~1916 · North Dakota
★ You are viewing this record
Sibling
Russell Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jay Johnson
Sibling · 1940 · age 16
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 — Williams-County, North Dakota
Open full size
1940 US Federal Census — Williams-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03018-01033)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bert Johnson | 45 | Head | Farmer | Wisconsin |
| 42 | Hilda Johnson | 44 | Wife | — | North Dakota |
| 43 | Laverne Johnson | 16 | Son | — | North Dakota |
| 44 | Richard Johnson | 14 | Son | — | North Dakota |
| 45 | Kenneth Johnson | 12 | Son | — | North Dakota |
| 46 | Arnold Johnson | 10 | Son | — | North Dakota |
| 47 | Robert Johnson | 8 | Son | — | North Dakota |
| 48 | Leroy Johnson | 2 | Son | — | North Dakota |
| 49 | Nafen Krabseth | 75 | Head | — | Norway |
| 50 | Sophia Krabseth | 50 | Wife | — | Norway |
| 51 | Clarence Paulson | 33 | Head | Farmer | North Dakota |
| 52 | Alida Paulson | 32 | Wife | — | North Dakota |
| 53 | Gladys Paulson | 7 | Daughter | — | North Dakota |
| 54 | Arlene Paulson | 5 | Daughter | — | North Dakota |
| 55 | Bryce Paulson | 5 | Son | — | North Dakota |
| 56 | Sever K. Berg | 58 | Head | Farmer | North Dakota |
| 57 | Corrine Berg | 58 | Wife | — | Norway |
| 58 | Bernice Berg | 24 | Daughter | — | North Dakota |
| 59 | Gladys Berg | 20 | Daughter | — | North Dakota |
| 60 | Frances Berg | 19 | Daughter | — | North Dakota |
| 61 | Adele Berg | 16 | Daughter | — | North Dakota |
| 62 | Ole S. Goftejen | 70 | Head | Farmer | Norway |
| 63 | Anna Goftejen | 63 | Wife | — | Norway |
| 64 | Peter P. Flores | 57 | Head | Farmer | Norway |
| 65 | Thomas L. Quie | 62 | Head | Farmer | Minnesota |
| 66 | Ingeborg Quie | 59 | Wife | — | Minnesota |
| 67 | Lester Quie | 23 | Son | Farmer | North Dakota |
| 68 | Myrtle Quie | 18 | Daughter | — | North Dakota |
| 69 | Fred Nelson | 34 | Head | Farmer | South Dakota |
| 70 | Ruth Nelson | 25 | Wife | — | North Dakota |
| 71 | George Sather | 45 | Head | Farmer | Wisconsin |
| 72 | Albert Dullum | 45 | Head | Farmer | Minnesota |
| 73 | Christine Dullum | 83 | Mother | — | Norway |
| 74 | Evelyn Dullum | 19 | Niece | — | North Dakota |
| 75 | Norman Helgeson | 26 | Nephew | — | North Dakota |
| 76 | Henry O. Johnson | 65 | Head | Farmer | South Dakota |
| 77 | Julia Johnson | 54 | Wife | — | South Dakota |
| 78 | Theodore Johnson THIS PERSON | 24 | Son | — | North Dakota |
| 79 | Russell Johnson | 18 | Son | — | North Dakota |
| 80 | Jay Johnson | 16 | Son | — | North Dakota |
Pedigree Summary
Theodore + 2 siblings
Gen 1 · 5 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)