CT
Clarence Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cass-County, Minnesota
Our Model Tree links this Clarence Thompson across the 1920, 1930 and 1940 US Censuses in Cass-County, Minnesota (XGBoost, ~Confirmed), with identified parents Mary & Thomas — first a son (b.~1902), then head of a 3-person household.
Age 38
b. ~1902
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Minnesota |
| Surname | Thompson |
| Given Name | Clarence U. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Becker Twp. |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 56 |
| Income (1939) | 552 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Farmer |
| Township / Ward | Becker Twp |
| Est. Birth Year | ~1902 |
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 Clarence | Age | Birth yr |
|---|---|---|---|---|
| Thomas Thompson | Head | — | 63 | ~1877 |
| Clarence Thompson | Son | — | 38 | ~1902 |
| Mary Thompson | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Cass, Minnesota
Son, age 18
Cass, Minnesota · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Minnesota |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | No |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Cass, Minnesota
Son, age 28
Cass, Minnesota · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Minnesota |
| Occupation | Farm Helper |
| Industry | Father's Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Cass-County, Minnesota
Son, age 38
Cass-County, Minnesota · implied b. ~1902 — 3 household members
| Surname | Thompson |
| Given Name | Clarence U. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Becker Twp. |
| 1935 Residence (County) | Cass |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 56 |
| Income (1939) | 552 |
| Highest Grade | 8 |
| 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 Clarence Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Thompson (~0.92 confidence) and father Thomas Thompson (~0.92 confidence) and mother Mary Thompson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Thompson
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
Thomas Thompson
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Mary Thompson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Thompson
Son · 1940 · age 38 · b. ~1902 · Minnesota
★ 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 — Cass-County, Minnesota
Open full size
1940 US Federal Census — Cass-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01912-00041)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest Carlysle | 24 | Head | Farmer | Minnesota |
| 2 | Odelia A. Carlysle | 21 | Wife | — | Minnesota |
| 3 | Helen A. Carlysle | 5 | Daughter | — | Minnesota |
| 4 | Mary E. Carlysle | 2 | Daughter | — | Minnesota |
| 5 | Joseph J. De Leest | 25 | Head | Farmer | Iowa |
| 6 | Louise H. De Leest | 23 | Wife | — | Minnesota |
| 7 | Ellen J. De Leest | 2 | Daughter | — | Minnesota |
| 8 | Donald L. De Leest | 0 | Son | — | Minnesota |
| 9 | Carl E. Swanson | 66 | Head | Farmer | Sweden |
| 10 | Emma E. Swanson | 63 | Wife | — | Wisconsin |
| 11 | Alfred Opheim | 30 | Head | Farmer | Minnesota |
| 12 | Nell S. Opheim | 30 | Wife | — | Illinois |
| 13 | John Herman Opheim | 3 | Son | — | Iowa |
| 14 | Drucilla M. Opheim | 2 | Daughter | — | Minn. |
| 15 | Alfred Jr. Opheim | 0 | Son | — | Minn. |
| 16 | Martin A. Opheim | 32 | Head | Laborer | Minn. |
| 17 | Vergie S. Opheim | 32 | Wife | — | So. Dak. |
| 18 | Lyle E. Opheim | 5 | Son | — | Minn. |
| 19 | George H. Lewis | 58 | Head | Farmer | Iowa |
| 20 | Lavilla Lewis | 87 | Mother | — | Iowa |
| 21 | Albert S. Lewis | 61 | Head | Farmer | Iowa |
| 22 | Lorenzo D. Pratt | 73 | Head | Farmer | Minnesota |
| 23 | Arthur J. Nelson | 35 | Head | Farmer | Minnesota |
| 24 | Hazel L. Nelson | 31 | Wife | — | Minnesota |
| 25 | Allan R. Nelson | 3 | Son | — | Minnesota |
| 26 | Thomas C. Thompson | 63 | Head | Farmer | Denmark |
| 27 | Mary Thompson | 61 | Wife | — | Minnesota |
| 28 | Clarence U. Thompson THIS PERSON | 38 | Son | Farmer | Minnesota |
| 29 | Edward S. Rasmussen | 45 | Head | Farmer | Minnesota |
| 30 | Henry Rasmussen | 43 | Brother | Farmer | Minnesota |
| 31 | Joseph P. Hazyuka | 38 | Head | Farmer | Minnesota |
| 32 | Nellie E. Hazyuka | 33 | Wife | — | Minnesota |
| 33 | Lila R. Hazyuka | 10 | Daughter | — | Minn. |
| 34 | Joseph Jr. Hazyuka | 9 | Son | — | Minn. |
| 35 | Mary Jane Hazyuka | 8 | Daughter | — | Minn. |
| 36 | Beverly A. Hazyuka | 4 | Daughter | — | Minn. |
| 37 | Evelyn V. Allguer | 21 | Maid | Servant | Minn. |
| 38 | Josephine Hazyuka | 82 | Head | Domestic | Austria |
| 39 | Frank P. Holub | 36 | Head | Farmer | Minnesota |
| 40 | Mary Holub | 67 | Mother | — | Minnesota |
Pedigree Summary
Clarence
Gen 1 · 3 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)