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Theodore Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clay-County, Minnesota
Our Model Tree links this Theodore Thompson across the 1920, 1930 and 1940 US Censuses in Clay-County, Minnesota (XGBoost, ~Confirmed), with identified parents Henne & J — 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 | Clay-County, Minnesota |
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Dilworth village |
| 1935 Residence (County) | Clay |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Dilworth Village |
| 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 Theodore | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Thompson | Daughter | — | 23 | ~1917 |
| Ella Thompson | Spouse | — | 48 | ~1892 |
| Theodore Thompson | Son | — | 21 | ~1919 |
| J Thompson | Head | — | 48 | ~1892 |
| Agnes Thompson | Daughter | — | 16 | ~1924 |
Census Appearances
1920
Clay, Minnesota
Son, age 1
Clay, Minnesota · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Clay, Minnesota
Son, age 11
Clay, Minnesota · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Theodore J. |
| 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
Clay-County, Minnesota
Son, age 21
Clay-County, Minnesota · implied b. ~1919 — 5 household members
| Surname | Thompson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Dilworth village |
| 1935 Residence (County) | Clay |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| 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 Theodore Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henne Thompson (~0.92 confidence) and father J Thompson (~0.92 confidence) and father Theodore Thompson (~0.92 confidence) and father Simon Thompson (~0.83 confidence) and mother Ragnhild Thompson (~0.83 confidence) and mother Clara Thompson (~0.92 confidence) and mother Ella Thompson (~0.92 confidence) and mother Eva Thompson (~0.92 confidence). The pedigree spans 2 generations with 8 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.9
Father
Henne Thompson
b. ~1892
Source father
● Household
· direct · ~0.92
Father
J Thompson
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Theodore Thompson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Simon Thompson
b. ~1847
Source father>father
● Household
· direct · ~0.83
Mother
Ragnhild Thompson
b. ~1857
Source father>mother
● Household
· direct · ~0.83
Mother
Clara Thompson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Ella Thompson
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Eva Thompson
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Theodore Thompson
Son · 1940 · age 21 · b. ~1919 · Minnesota
★ You are viewing this record
Sibling
Agnes Thompson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor 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 — Clay-County, Minnesota
Open full size
1940 US Federal Census — Clay-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01914-00111)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank O. Barnes | 55 | Lodger | Engineer | Minnesota |
| 42 | Jenny B. Brekke | 56 | Lodger | Housekeeper | Iowa |
| 43 | Fred Weber | 45 | Lodger | Upholsterer | Minnesota |
| 44 | R. D. Lamb | 50 | Head | Brakeman | Minnesota |
| 45 | Martha Lamb | 48 | Wife | — | North Dakota |
| 46 | Richard Lamb | 19 | Son | Water Service | Minnesota |
| 47 | Harold Lamb | 9 | Son | — | North Dakota |
| 48 | Larsine Thorsen | 83 | Mother-in-law | — | Norway |
| 49 | W. P. O'Leary | 49 | Head | Switchman | Minnesota |
| 50 | Emil M. O'Leary | 48 | Wife | — | North Dakota |
| 51 | Patrick Jr. O'Leary | 12 | Son | — | North Dakota |
| 52 | Anna M. Wylie | 55 | Sister-in-law | Dressmaker | Minnesota |
| 53 | Ingvold Hanson | 37 | Head | Machinist Helper | Norway |
| 54 | Martha Hanson | 32 | Wife | — | Minnesota |
| 55 | Maurice Hanson | 4 | Son | — | North Dakota |
| 56 | J. D. Thompson | 48 | Head | Wrecker Operator | Minnesota |
| 57 | Ella Thompson | 48 | Wife | — | Minnesota |
| 58 | Eleanor Thompson | 23 | Daughter | Clerk | North Dakota |
| 59 | Theodore Thompson THIS PERSON | 21 | Son | — | Minnesota |
| 60 | Agnes Thompson | 16 | Daughter | — | Minnesota |
| 61 | Julia D'Alessandro | 33 | Head | — | Italy |
| 62 | Katherine D'Alessandro | 15 | Wife | — | North Dakota |
| 63 | Ralph D'Alessandro | 14 | Son | — | Minnesota |
| 64 | Donald D'Alessandro | 12 | Son | — | Minnesota |
| 65 | Angelo D'Alessandro | 9 | Son | — | Minnesota |
| 66 | Rose M. D'Alessandro | 7 | Daughter | — | Minnesota |
| 67 | Louis D'Alessandro | 3 | Son | — | Minnesota |
| 68 | R. B. Robinson | 56 | Head | Brakeman | Minnesota |
| 69 | Alice Robinson | 44 | Wife | Cook | Minnesota |
| 70 | James B. Robinson | 10 | Son | — | Minnesota |
| 71 | C. P. Manson | 38 | Head | Brakeman | Iowa |
| 72 | Annie Manson | 32 | Wife | — | Minnesota |
| 73 | G. H. Hanson | 55 | Head | Fireman | Minnesota |
| 74 | Sylvia Hanson | 49 | Wife | — | Minnesota |
| 75 | Roland Hanson | 22 | Son | Salesman | Minnesota |
| 76 | Manya Hanson | 20 | Daughter | — | Minnesota |
| 77 | Ethel Hanson | 14 | Daughter | — | Minnesota |
| 78 | E. M. Westerberg | 45 | Head | Brakeman | North Dakota |
| 79 | Liz C. Westerberg | 38 | Wife | Teacher | Moorhead |
| 80 | Lyle C. Westerberg | 23 | Son | Round House Laborer | North Dakota |
Related Census Records
Pedigree Summary
Theodore + 2 siblings
Gen 1 · 6 parents
~0.92
Gen 2 · 2 grandparents
~0.82
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)