DT
Donald Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dakota-County, Minnesota
Our Model Tree links this Donald Thompson across the 1920, 1930 and 1940 US Censuses in Dakota-County, Minnesota (XGBoost, ~Confirmed), with identified parents Archie & Herbert — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dakota-County, Minnesota |
| Surname | Thompson |
| Given Name | Donald V. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Farmington |
| 1935 Residence (County) | Dakota |
| Additional Details | |
| Class of Worker | 200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Farmington |
| Est. Birth Year | ~1919 |
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 Donald | Age | Birth yr |
|---|---|---|---|---|
| Laura Thompson | Spouse | — | 44 | ~1896 |
| Chester Ahlin | Other | — | 25 | ~1915 |
| Donald Thompson | Son | — | 21 | ~1919 |
| Herbert Thompson | Head | — | 55 | ~1885 |
| Ryno Thompson | Son | — | 23 | ~1917 |
Census Appearances
1920
Dakota, Minnesota
Son, age 1
Dakota, Minnesota · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Donald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Dakota, Minnesota
Son, age 11
Dakota, Minnesota · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Dakota-County, Minnesota
Son, age 21
Dakota-County, Minnesota · implied b. ~1919 — 5 household members
| Surname | Thompson |
| Given Name | Donald V. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Farmington |
| 1935 Residence (County) | Dakota |
| Class of Worker | 200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Donald Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Archie Thompson (~0.92 confidence) and father Herbert Thompson (~0.92 confidence) and father Herbert Thompson (~0.92 confidence) and mother Bessie Thompson (~0.92 confidence) and mother Laura Thompson (~0.92 confidence) and mother Laura Thompson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Archie Thompson
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Herbert Thompson
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Herbert Thompson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Bessie Thompson
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Laura Thompson
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Laura Thompson
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Thompson
Son · 1940 · age 21 · b. ~1919 · Minnesota
★ You are viewing this record
Sibling
Ryno Thompson
Sibling · 1940 · age 23
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 — Dakota-County, Minnesota
Open full size
1940 US Federal Census — Dakota-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01917-00133)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles H. Hall | 47 | Head | Trackman | Minnesota |
| 2 | Mary E. Hall | 42 | Wife | — | Minnesota |
| 3 | Marlys M. Hall | 17 | Daughter | — | Minnesota |
| 4 | Bertha A. Hall | 16 | Daughter | — | Minnesota |
| 5 | Harry M. Montgomery | 56 | Head | Laborer | Illinois |
| 6 | Annie M. Montgomery | 52 | Wife | — | Kentucky |
| 7 | Otis C. Montgomery | 32 | Son | Truck Driver | Illinois |
| 8 | Russell M. Montgomery | 30 | Son | Proprietor | Illinois |
| 9 | Howard M. Montgomery | 16 | Son | Proprietor | Illinois |
| 10 | Marlin J. Wales | 31 | Head | Laborer | Minnesota |
| 11 | Pearl V. Wales | 25 | Wife | — | Minnesota |
| 12 | Charles D. Wales | 3 | Son | — | Minnesota |
| 13 | Clara M. Heath | 53 | Head | — | Minnesota |
| 14 | Carl L. Heath | 27 | Son | Laborer | South Dakota |
| 15 | Josephine A. Heath | 24 | Daughter | — | Minnesota |
| 16 | Fred H. Jensen | 28 | Head | Lineman | Minnesota |
| 17 | Bonnie C. Jensen | 29 | Wife | — | Minnesota |
| 18 | Fred D. Jensen | 7 | Son | — | Minnesota |
| 19 | Donna J. Jensen | 5 | Daughter | — | Minnesota |
| 20 | Iver Duholm | 64 | Head | Carpenter | Denmark |
| 21 | Herbert R. Thompson | 55 | Head | Engineer | Minnesota |
| 22 | Laura E. Thompson | 44 | Wife | — | Minnesota |
| 23 | Ryno Thompson | 23 | Son | Truck Driver | Minnesota |
| 24 | Donald V. Thompson THIS PERSON | 21 | Son | — | Minnesota |
| 25 | Chester L. Ahlin | 25 | Lodger | Supervisor | Minnesota |
| 26 | Arlie C. Jorgenson | 29 | Head | Proprietor | Minnesota |
| 27 | Pauline Jorgenson | 28 | Wife | — | Minnesota |
| 28 | Charles M. Jorgenson | 1 | Son | — | Minnesota |
| 29 | Sherril E. Neilsen | 6 | Daughter | — | Minnesota |
| 30 | Ila K. Neilsen | 4 | Daughter | — | Minnesota |
| 31 | Charles F. Triche | 75 | Father-in-law | — | New York |
| 32 | Wayne I. Jensen | 9 | Nephew | — | Minnesota |
| 33 | Wallace S. Grant | 50 | Head | Brakeman | Minnesota |
| 34 | Greta M. Grant | 46 | Wife | — | Iowa |
| 35 | Maine E. Grant | 27 | Daughter | Saleslady | Minnesota |
| 36 | Gordon W. Grant | 22 | Son | Manager | Minnesota |
| 37 | Frances M. Wiierke | 18 | Lodger | — | Minnesota |
| 38 | Ruben P. Peterson | 34 | Head | Proprietor | North Dakota |
| 39 | Alice M. Peterson | 28 | Wife | — | Minnesota |
| 40 | Maryalice Peterson | 5 | Daughter | — | Minnesota |
Pedigree Summary
Donald + 1 sibling
Gen 1 · 6 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)