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Theodore Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grand-Forks-County, North Dakota
Our Model Tree links this Theodore Thompson across the 1920, 1930 and 1940 US Censuses in Grand-Forks-County, North Dakota (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 3-person household.
Age 57
b. ~1883
Male
Head
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grand-Forks-County, North Dakota |
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Grand Forks |
| 1935 Residence (County) | Grand Forks |
| Additional Details | |
| Income (1939) | 14 |
| Highest Grade | C 4 |
| 1935 Residence | Same Home |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Grand Forks |
| Est. Birth Year | ~1883 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Theodore | Age | Birth yr |
|---|---|---|---|---|
| Dorothea Thompson | Daughter | — | 30 | ~1910 |
| Theodore Thompson | Head | — | 57 | ~1883 |
| Edith Thompson | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Grand Forks, …
Head, age 37
Grand Forks, North Dakota · implied b. ~1883 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Real Estate |
| Industry | Private office |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Grand Forks, …
Head, age 47
Grand Forks, North Dakota · implied b. ~1883 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Age at First Marriage | 26 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Sales Manager |
| Industry | Auto Company |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3500 |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Grand-Forks-County, North …
Head, age 57
Grand-Forks-County, North Dakota · implied b. ~1883 — 3 household members
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Grand Forks |
| 1935 Residence (County) | Grand Forks |
| Income (1939) | 14 |
| Highest Grade | C 4 |
| 1935 Residence | Same Home |
| 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 Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Theodore Thompson
Head · 1940 · age 57 · b. ~1883 · North Dakota
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Grand-Forks-County, North Dakota
Open full size
1940 US Federal Census — Grand-Forks-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03002-00192)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joy J. Conrad | 35 | Wife | — | North Dakota |
| 42 | Joanne A. Conrad | 9 | Daughter | — | North Dakota |
| 43 | Evelyn R. Conrad | 4 | Daughter | — | North Dakota |
| 44 | Halmeda J. Conrad | 2 | Daughter | — | North Dakota |
| 45 | Irene Foreness | 22 | Maid | Maid | North Dakota |
| 46 | Edward C. Haagensen | 68 | Head | Medical Doctor | Wisconsin |
| 47 | Henrietta Haagensen | 67 | Wife | — | Minnesota |
| 48 | Ione B. Haagensen | 18 | Son | — | North Dakota |
| 49 | John R. Brock | 40 | Head | Traveling Salesman | Minnesota |
| 50 | Marjorie M. Brock | 39 | Wife | — | Minnesota |
| 51 | Janet M. Brock | 9 | Daughter | — | North Dakota |
| 52 | Theodore Thompson THIS PERSON | 57 | Head | — | North Dakota |
| 53 | Edith F. Thompson | 55 | Wife | Editorial Work | North Dakota |
| 54 | Dorothea Thompson | 30 | Daughter | — | North Dakota |
| 55 | Homer R. Harrington | 49 | Head | Minister | North Dakota |
| 56 | Elizabeth Harrington | 42 | Wife | — | Minnesota |
| 57 | John H. Harrington | 7 | Son | — | North Dakota |
| 58 | Anne Harrington | 7 | Daughter | — | North Dakota |
| 59 | Mark W. Murray | 50 | Head | Treasurer | Illinois |
| 60 | Margaret E. Murray | 22 | Daughter | — | North Dakota |
| 61 | Mary J. Murray | 21 | Daughter | — | North Dakota |
| 62 | Michael H. Murray | 19 | Son | — | North Dakota |
| 63 | Robert B. Murray | 9 | Son | — | North Dakota |
| 64 | Minnie Murray | 43 | Maid | Maid | Minnesota |
| 65 | May Belle Price | 40 | Maid | Maid | Minnesota |
| 66 | Olger B. Burtness | 55 | Head | Lawyer | North Dakota |
| 67 | Zoe E. Burtness | 53 | Wife | — | Iowa |
| 68 | Orville J. Overmoen | 24 | Head | Clerical | North Dakota |
| 69 | Stella M. Overmoen | 22 | Wife | — | North Dakota |
| 70 | Madison M. Overmoen | 0 | Son | — | Minnesota |
| 71 | Herbert R. Lake | 44 | Head | Grocer | Illinois |
| 72 | Myrtle K. Lake | 46 | Wife | — | North Dakota |
| 73 | Lois L. Lake | 12 | Daughter | — | North Dakota |
| 74 | Carol J. Lake | 11 | Daughter | — | North Dakota |
| 75 | Ervan C. Eyler | 39 | Head | Telegraph Editor | Nebraska |
| 76 | Alma S. Eyler | 30 | Wife | — | Minnesota |
| 77 | Ellen C. Eyler | 4 | Daughter | — | North Dakota |
| 78 | Robert B. Biddick | 20 | Lodger | Clerk | New York |
| 79 | Clarence H. Schroeder | 38 | Head | Superintendent | North Dakota |
| 80 | Esther A. Schroeder | 38 | Wife | — | North Dakota |
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)