JC
John Clarke — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jackson-County, Missouri
Our Model Tree links this John Clarke across the 1920, 1930 and 1940 US Censuses in Jackson-County, Missouri (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Head
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Missouri |
| Surname | Clarke |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Kansas City |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Occupation | Chemist |
| Industry | Paint manufacture |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 4800 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Chemist |
| Township / Ward | Kansas City |
| Est. Birth Year | ~1907 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Mary Clarke | Daughter | — | 3 | ~1937 |
| John Clarke | Head | — | 33 | ~1907 |
| Grace Clarke | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Jackson, Missouri
Son, age 13
Jackson, Missouri · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
Son, age 23
Jackson, Missouri · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Assistant |
| Industry | Church |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Jackson-County, Missouri
Head, age 33
Jackson-County, Missouri · implied b. ~1907 — 3 household members
| Surname | Clarke |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Kansas City |
| 1935 Residence (County) | Jackson |
| Occupation | Chemist |
| Industry | Paint manufacture |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 4800 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 John Clarke across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Clark (~0.92 confidence) and father John Clark (~0.92 confidence) and mother Stella Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Clark
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Clark
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Stella Clark
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Clarke
Head · 1940 · age 33 · b. ~1907 · Missouri
★ 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 — Jackson-County, Missouri
Open full size
1940 US Federal Census — Jackson-County, Missouri
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02172-00652)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John W. Clarke THIS PERSON | 33 | Head | Chemist | Missouri |
| 42 | Grace G. Clarke | 31 | Wife | — | Missouri |
| 43 | Mary Helen Clarke | 3 | Daughter | — | Missouri |
| 44 | John S. Nicholas | 52 | Head | Clerk | Missouri |
| 45 | Alma A. Nicholas | 48 | Wife | — | Missouri |
| 46 | Godfrey B. Graham | 51 | Head | Executive | England |
| 47 | Catherine S. Graham | 53 | Wife | — | North Dakota |
| 48 | Edward S. Graham | 26 | Son | Cashier | Missouri |
| 49 | Russell W. Gentzler | 46 | Head | District Manager | Kansas |
| 50 | Vesta W. Gentzler | 44 | Wife | — | Missouri |
| 51 | Robt. W. Pippenger | 25 | Step-son | Sales Clerk | Missouri |
| 52 | Thomas J. Clancy | 42 | Head | Agent | Missouri |
| 53 | Berene Clancy | 32 | Wife | — | Illinois |
| 54 | James Thomas Clancy | 10 | Son | — | Missouri |
| 55 | Jeanne Dolores Clancy | 8 | Daughter | — | Kansas |
| 56 | Thomas Joseph, Jr. Clancy | 7 | Son | — | Kansas |
| 57 | Robert Michael Clancy | 2 | Son | — | Kansas |
| 58 | Frances J. Roy | 32 | Maid | Servant | Kansas |
| 59 | William E. Morris | 42 | Head | Steel Worker | Missouri |
| 60 | Ada M. Morris | 34 | Wife | — | Missouri |
| 62 | Wilbur F. Jr. Coen | 28 | Head | Realtor | Missouri |
| 63 | La Vern Coen | 28 | Wife | — | Oklahoma |
| 64 | Laurence Wright Coen | 3 | Son | — | Missouri |
| 65 | Diane Kay Coen | 12 | Daughter | — | — |
| 66 | Vivian Boyd | 22 | Maid | Servant | Missouri |
| 67 | Ethel J. Lee | 60 | Head | — | Minnesota |
| 68 | Nora Mccarthy | 55 | Companion | — | Missouri |
| 69 | Oscar C. Weaver | 69 | Head | — | Massachusetts |
| 70 | Minnie B. Weaver | 65 | Wife | — | Kansas |
| 71 | Karl V. Turner | 32 | Head | Salesman | Sweden |
| 72 | Blanche H. Turner | 29 | Wife | — | Missouri |
| 73 | Karl Valentine Jr. Turner | 9 | Son | — | Missouri |
| 74 | Charlene Blanche Turner | 5 | Daughter | — | Missouri |
| 75 | Florence Hatch | 65 | Aunt | — | Massachusetts |
| 76 | John R. Rodehaffer | 28 | Head | Sales Dept. | Ohio |
| 77 | Lucille Rodehaffer | 29 | Wife | — | Texas |
| 78 | David Allen Rodehaffer | 2 | Son | — | Missouri |
| 79 | Elmer N. Slavis | 48 | Head | Veterinary | Kansas |
| 80 | Mamie G. Slavis | 47 | Wife | — | Kansas |
Related Census Records
Pedigree Summary
John
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)