CT
Clarence Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marshall-County, Iowa
Our Model Tree links this Clarence Thompson across the 1910, 1920, 1930 and 1940 US Censuses in Marshall-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 3-person household.
Age 54
b. ~1886
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marshall-County, Iowa |
| Surname | Thompson |
| Given Name | Clarence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Taylor Twp. |
| 1935 Residence (County) | Marshall |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 80 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Taylor Twp |
| Est. Birth Year | ~1886 |
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 |
|---|---|---|---|---|
| Ruth Thompson | Daughter | — | 29 | ~1911 |
| Clarence Thompson | Head | — | 54 | ~1886 |
| Vinnie Thompson | Spouse | — | 59 | ~1881 |
Census Appearances
1910
Marshall, Iowa
Other, age 23
Marshall, Iowa · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Clarence |
| Relationship to Head | Hired |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Iowa |
| Years Married | 0 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer general farming |
| Industry | OA |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Marshall, Iowa
Head, age 33
Marshall, Iowa · implied b. ~1887 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Clarence F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Marshall, Iowa
Head, age 43
Marshall, Iowa · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Clarence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 23 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Marshall-County, Iowa
Head, age 54
Marshall-County, Iowa · implied b. ~1886 — 3 household members
| Surname | Thompson |
| Given Name | Clarence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Taylor Twp. |
| 1935 Residence (County) | Marshall |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 80 |
| Income (1939) | 0 |
| Highest Grade | 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 Clarence Thompson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Clarence Thompson
Head · 1940 · age 54 · b. ~1886 · Iowa
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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 — Marshall-County, Iowa
Open full size
1940 US Federal Census — Marshall-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01182-00945)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George H. Lewis | 60 | Head | Farmer | Iowa |
| 42 | Lulu Lewis | 56 | Wife | — | Iowa |
| 43 | Charles H. Kirchberger | 49 | Head | Foreman | Iowa |
| 44 | Mary E. Kirchberger | 48 | Wife | — | Kansas |
| 45 | Fred E. Moser | 59 | Head | Farmer | Iowa |
| 46 | Ethel Moser | 57 | Wife | — | Iowa |
| 47 | Merle Moser | 34 | Son | Presser | Iowa |
| 48 | Ulysses S. Collins | 51 | Head | Farmer | Iowa |
| 49 | Lula Collins | 51 | Wife | — | Iowa |
| 50 | Raymond Collins | 21 | Son | Farmer | Iowa |
| 51 | Maurice Collins | 19 | Son | — | Iowa |
| 52 | Leland Milhous | 32 | Head | Farm Cruiser | Iowa |
| 53 | V. Edna Milhous | 23 | Wife | — | Iowa |
| 54 | Hugh E. Carrick | 61 | Head | Farmer | Iowa |
| 55 | Ella Carrick | 57 | Wife | — | Iowa |
| 56 | Winifred Birkard | 23 | Hired man | Hired Hand | Iowa |
| 57 | John May | 52 | Head | Farmer | Lithuania |
| 58 | Lulu E. May | 49 | Wife | — | Iowa |
| 59 | John H. Catron | 56 | Head | Yardman | Nebraska |
| 60 | Bertha Catron | 52 | Wife | — | Iowa |
| 61 | Earl Catron | 32 | Son | Laborer | Iowa |
| 62 | Mary Catron | 29 | Daughter-in-law | — | Iowa |
| 63 | Marion Henis | 35 | Head | Miller | Iowa |
| 64 | Della E. Henis | 32 | Wife | — | Iowa |
| 65 | Jeannine Henis | 9 | Daughter | — | Iowa |
| 66 | Clarence Thompson THIS PERSON | 54 | Head | Farmer | Iowa |
| 67 | Vinnie P. Thompson | 59 | Wife | — | Iowa |
| 68 | Ruth Thompson | 29 | Daughter | Nurse | Iowa |
| 69 | Gay F. Glenn | 58 | Head | Farmer | Missouri |
| 70 | Nellie C. Glenn | 57 | Wife | — | Iowa |
| 71 | Josephine Mishler | 23 | Daughter | — | Iowa |
| 72 | George Mishler | 23 | Son-in-law | Drill Press Operator | Iowa |
| 73 | Clarence Dellers | 55 | Head | Farmer | Iowa |
| 74 | Adda B. Dellers | 51 | Wife | — | Iowa |
| 75 | Raymond Dellers | 23 | Son | Farmer | Iowa |
| 76 | Gordon Dellers | 21 | Son | — | Iowa |
| 77 | Wilma Dellers | 14 | Daughter | — | Iowa |
| 78 | Betty Ruth Dellers | 13 | Daughter | — | Iowa |
| 79 | Marion O. Snell | 44 | Head | Farmer | Iowa |
| 80 | Lola Snell | 35 | Wife | — | Iowa |
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)