ET
Ernest Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mclean-County, North Dakota
Our Model Tree links this Ernest Thompson across the 1920, 1930 and 1940 US Censuses in Mclean-County, North Dakota (XGBoost, ~Confirmed), with identified parents Lena & Chris — first a head (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Head
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mclean-County, North Dakota |
| Surname | Thompson |
| Given Name | Ernest |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Snake Creek |
| 1935 Residence (County) | McLean |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Farmer |
| Township / Ward | Snake Creek |
| Est. Birth Year | ~1909 |
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 Ernest | Age | Birth yr |
|---|---|---|---|---|
| Truman Rendahl | Other | — | 13 | ~1927 |
| Bert Rendahl | Other | — | 11 | ~1929 |
| Ernest Thompson | Head | — | 31 | ~1909 |
| Lorna Thompson | Daughter | — | 12 | ~1928 |
| Anna Thompson | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Mclean, North …
Son, age 11
Mclean, North Dakota · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ernest |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Mclean, North …
Son, age 21
Mclean, North Dakota · implied b. ~1909 — 35 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ernst |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Mclean-County, North …
Head, age 31
Mclean-County, North Dakota · implied b. ~1909 — 5 household members
| Surname | Thompson |
| Given Name | Ernest |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Snake Creek |
| 1935 Residence (County) | McLean |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Ernest Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Lena Thompson (~0.92 confidence) and father Chris Thompson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Lena Thompson
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Chris Thompson
b. ~1882
Source father
● Household
· direct · ~0.92
This person
Anchor record
Ernest Thompson
Head · 1940 · age 31 · b. ~1909 · 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 — Mclean-County, North Dakota
Open full size
1940 US Federal Census — Mclean-County, North Dakota
Page Contents
33 people indexed on this census page (nara:1940:m-t0627-03006-00648)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fred O Berger | 61 | Head | Farmer | Minnesota |
| 42 | John O Krebstach | 53 | Head | Farmer | Minnesota |
| 43 | Margaret Krebstach | 52 | Wife | — | Minnesota |
| 44 | Laverne Krebstach | 18 | Son | Laborer | North Dakota |
| 45 | Francis Krebstach | 16 | Son | Laborer | North Dakota |
| 46 | Claude Krebstach | 31 | Head | Laborer | North Dakota |
| 47 | Florence Krebstach | 25 | Wife | — | South Dakota |
| 48 | James Krebstach | 12 | Son | — | South Dakota |
| 49 | Henry O Yegen | 51 | Head | Farmer | Minnesota |
| 50 | Margaret Yegen | 40 | Wife | — | Minnesota |
| 51 | Florence Yegen | 20 | Daughter | — | North Dakota |
| 52 | Eugene Yegen | 18 | Son | Laborer | North Dakota |
| 53 | Gladys Yegen | 16 | Daughter | — | North Dakota |
| 54 | Eldon Yegen | 14 | Son | Laborer | North Dakota |
| 55 | Nick Allers | 48 | Head | Farmer | Minnesota |
| 56 | Agnes Allers | 39 | Wife | — | Minnesota |
| 57 | Francis Allers | 10 | Son | — | North Dakota |
| 58 | Dolores Allers | 9 | Daughter | — | North Dakota |
| 59 | Theresa Allers | 7 | Daughter | — | North Dakota |
| 60 | Mary Ann Allers | 3 | Daughter | — | North Dakota |
| 61 | Ernest Thompson THIS PERSON | 31 | Head | Farmer | North Dakota |
| 62 | Anna Thompson | 32 | Wife | — | North Dakota |
| 63 | Lorna Thompson | 12 | Daughter | — | North Dakota |
| 64 | Truman Rendahl | 13 | Step-son | — | North Dakota |
| 65 | Bert Rendahl | 11 | Step-son | — | North Dakota |
| 66 | Lloyd Irwin | 28 | Head | Laborer | North Dakota |
| 67 | Madeline Irwin | 21 | Wife | — | Montana |
| 68 | George Walz | 57 | Father-in-law | — | Russia |
| 69 | Sarah Walz | 53 | Mother-in-law | — | Romania |
| 70 | Amelia Walz | 14 | Sister-in-law | — | North Dakota |
| 71 | Martin Walz | 13 | Brother-in-law | — | North Dakota |
| 72 | Ladonna Irwin | 1 | Daughter | — | North Dakota |
| 73 | Vernon Irwin | 0 | Son | — | North Dakota |
Pedigree Summary
Ernest
Gen 1 · 2 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)