CT
Clarence Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kansas
Our Model Tree links this Clarence Thompson across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kansas (XGBoost, ~Confirmed), with identified parents Anna & Clarence — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kansas |
| Surname | Thompson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Kentucky Twp |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Kentucky Twp |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Clarence | Age | Birth yr |
|---|---|---|---|---|
| Clarence Thompson | Head | — | 51 | ~1889 |
| Arlan Thompson | Son | — | 13 | ~1927 |
| Clarence Thompson | Son | — | 21 | ~1919 |
| Victor Thompson | Son | — | 17 | ~1923 |
| Leonard Thompson | Son | — | 14 | ~1926 |
| Myrtle Thompson | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Jefferson, Kansas
Son, age 1
Jefferson, Kansas · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Clarence H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Jefferson, Kansas
Son, age 11
Jefferson, Kansas · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Clarence H Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Jefferson-County, Kansas
Son, age 21
Jefferson-County, Kansas · implied b. ~1919 — 6 household members
| Surname | Thompson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Kentucky Twp |
| 1935 Residence (County) | Jefferson |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Anna Thompson (~0.83 confidence) and father Clarence Thompson (~0.92 confidence) and father Clarence Thompson (~0.92 confidence) and father Clarence Thompson (~0.92 confidence) and mother Myrtle Thompson (~0.92 confidence) and mother Myrtle Thompson (~0.92 confidence). The pedigree spans 2 generations with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.9
Mother
Anna Thompson
b. ~1859
Source father>mother
● Household
· direct · ~0.83
Father
Clarence Thompson
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Clarence Thompson
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Clarence Thompson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Myrtle Thompson
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Myrtle Thompson
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Thompson
Son · 1940 · age 21 · b. ~1919 · Kansas
★ You are viewing this record
Sibling
Leonard Thompson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Victor Thompson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arlan Thompson
Sibling · 1940 · age 13
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 — Jefferson-County, Kansas
Open full size
1940 US Federal Census — Jefferson-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01236-00114)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eileen Steinmetz | 17 | Daughter | — | Kansas |
| 2 | Daniel J Steinmetz | 16 | Son | — | Kansas |
| 3 | Gilmore Sheppard | 62 | Head | Farmer | Kansas |
| 4 | Mary Sheppard | 64 | Wife | — | Kansas |
| 5 | Glen Sheppard | 24 | Son | Farmer | Kansas |
| 6 | Merlin Sheppard | 21 | Son | Farmer | Kansas |
| 7 | Jesse Killinger | 52 | Head | Farmer | Kansas |
| 8 | Edgar Patterson | 39 | Head | Farmer | Kansas |
| 9 | Myria Patterson | 35 | Wife | — | Kansas |
| 10 | Gladys J Patterson | 11 | Daughter | — | Kansas |
| 11 | Olita Patterson | 10 | Daughter | — | Kansas |
| 12 | Jesse Worthington | 67 | Head | Farmer | Tennessee |
| 13 | Molly Worthington | 69 | Wife | — | Tennessee |
| 14 | Donald Worthington | 21 | Son | Farmer | Kansas |
| 15 | James Holmes | 48 | Head | Old Age Pensioner | Illinois |
| 16 | Charley Holmes | 45 | Brother | Farm | Illinois |
| 17 | Frank Sherman | 60 | Head | Farm | West Virginia |
| 18 | Dora Sherman | 18 | Son | Farm | Kansas |
| 19 | Woodard Worthington | 37 | Head | Farmer | Tennessee |
| 20 | Elsie Worthington | 33 | Wife | — | Kansas |
| 21 | Melvin Worthington | 12 | Son | — | Kansas |
| 22 | Marlyn Worthington | 10 | Daughter | — | Kansas |
| 23 | Eldon Worthington | 8 | Son | — | Kansas |
| 24 | Keith Worthington | 5 | Son | — | Kansas |
| 25 | Phylis Worthington | 4 | Daughter | — | Kansas |
| 26 | Walter Duree | 52 | Head | Farmer | Kansas |
| 27 | Georgia Duree | 55 | Wife | — | Kansas |
| 28 | Agnes Ziol | 87 | Mother-in-law | — | Missouri |
| 29 | Clarence Thompson | 51 | Head | Farmer | Kansas |
| 30 | Myrtle Thompson | 51 | Wife | — | Kansas |
| 31 | Clarence Thompson THIS PERSON | 21 | Son | — | Kansas |
| 32 | Victor E Thompson | 17 | Son | — | Kansas |
| 33 | Leonard Thompson | 14 | Son | — | Kansas |
| 34 | Arlan Thompson | 13 | Son | — | Kansas |
| 35 | Otis Smoker | 36 | Head | Farmer | Kansas |
| 36 | Ottice Smoker | 32 | Wife | — | Kansas |
| 37 | Lee W Smoker | 8 | Son | — | Kansas |
| 38 | Tom Mundenhall | 47 | Head | Tractor Driver | Kansas |
| 39 | Belle Mundenhall | 46 | Wife | — | Kansas |
| 40 | Tom Mundenhall | 18 | Son | — | Kansas |
Pedigree Summary
Clarence + 3 siblings
Gen 1 · 5 parents
~0.92
Gen 2 · 1 grandparents
~0.83
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)