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Thomas Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mchenry-County, North Dakota
Our Model Tree links this Thomas Thompson across the 1910, 1920, 1930 and 1940 US Censuses in Mchenry-County, North Dakota (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mchenry-County, North Dakota |
| Surname | Thompson |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Voltaire village |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Occupation | Coal Heaver |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Coal Heaver |
| Township / Ward | Voltaire Village |
| Est. Birth Year | ~1895 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Betty Thompson | Daughter | — | 3 | ~1937 |
| Thomas Thompson | Head | — | 45 | ~1895 |
| Gerald Berg | Other | — | 29 | ~1911 |
| Regina Thompson | Spouse | — | 37 | ~1903 |
Census Appearances
1910
Mchenry, North …
Other, age 15
Mchenry, North Dakota · implied b. ~1895 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Thomas |
| Relationship to Head | brother |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Nor. Norwegian |
| Occupation | Farm laborer |
| Industry | Working out |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Mchenry, North …
Other, age 25
Mchenry, North Dakota · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Thomas |
| Relationship to Head | brother |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Norway |
| Occupation | farm labor |
| Industry | works out |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Mchenry, North …
Other, age 35
Mchenry, North Dakota · implied b. ~1895 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Thomas |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Norway |
| Occupation | Laborer |
| Industry | Coal Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Mchenry-County, North …
Head, age 45
Mchenry-County, North Dakota · implied b. ~1895 — 4 household members
| Surname | Thompson |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Voltaire village |
| 1935 Residence (County) | McHenry |
| Occupation | Coal Heaver |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Thomas Thompson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Thomas Thompson
Head · 1940 · age 45 · b. ~1895 · North Dakota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Mchenry-County, North Dakota
Open full size
1940 US Federal Census — Mchenry-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03005-00737)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patrick Mcnamara | 39 | Head | Foreman | N. Dak |
| 2 | Henrietta Mcnamara | 29 | Wife | — | N. Dak |
| 3 | Patricia Mcnamara | 7 | Daughter | — | N. Dak |
| 4 | Sharron Mcnamara | 2 | Daughter | — | N. Dak |
| 5 | Gilbert Ellison | 42 | Head | Car Man | Wisconsin |
| 6 | Hannah Ellison | 42 | Wife | — | N. Dak |
| 7 | Casper Opland | 44 | Head | Elevator | S. Dak |
| 8 | Emma Opland | 40 | Wife | — | S. Dak |
| 9 | Floyd Opland | 18 | Son | — | N. Dak |
| 10 | Annabel Opland | 14 | Daughter | — | N. Dak |
| 11 | Thomas Thompson THIS PERSON | 45 | Head | Coal Heaver | Iowa |
| 12 | Regina Thompson | 37 | Wife | — | Russia |
| 13 | Betty Thompson | 3 | Daughter | — | N. Dak |
| 14 | Gerald Berg | 29 | Lodger | Coal Heaver | N. Dak |
| 15 | C. P. Byars | 60 | Head | Blacksmith | Iowa |
| 16 | Pauline Byars | 56 | Wife | — | N. Dak |
| 17 | Payton, Patricia Byars | 10 | Grandchild | — | Michigan |
| 18 | Laverna Byars | 8 | Grandchild | — | Michigan |
| 19 | George Bohner | 83 | Father-in-law | — | France |
| 20 | John Slotsveen | 53 | Head | Laborer | Norway |
| 21 | Emma Slotsveen | 52 | Wife | — | S. Dak |
| 22 | Melvin Slotsveen | 21 | Son | Laborer | N. Dak |
| 23 | Anna Slotsveen | 16 | Daughter | — | N. Dak |
| 24 | Dorothy Slotsveen | 13 | Daughter | — | N. Dak |
| 25 | Robert, C. Colter | 56 | Head | Laborer | Canada-Eng |
| 26 | Bertha Colter | 44 | Wife | — | S. Dak |
| 27 | Bertha Mae Colter | 21 | Daughter | — | N. Dak |
| 28 | Verl Colter | 18 | Daughter | — | Canada |
| 29 | Robert, Jr. Colter | 16 | Son | — | Washington |
| 30 | James Colter | 12 | Son | — | N. Dak |
| 31 | Martin, O. Knutson | 49 | Head | Depot Agent | Minnesota |
| 32 | Gertrude Knutson | 45 | Wife | — | Minnesota |
| 33 | Wilmot Knutson | 19 | Son | New Worker | N. Dak |
| 34 | Marjorie Ann Knutson | 17 | Daughter | — | N. Dak |
| 35 | Isaac Frantzkog | 45 | Head | Filling Station | S. Dak |
| 36 | Valborg Frantzkog | 46 | Wife | — | Wisconsin |
| 37 | Joseph Frantzkog | 20 | Step-son | New Worker | N. Dak |
| 38 | Walter Frantzkog | 18 | Step-son | — | N. Dak |
| 39 | Lillian Frantzkog | 16 | Step-Daughter | — | N. Dak |
| 40 | Palma Frantzkog | 14 | Step-Daughter | — | N. Dak |
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)