JC
John Clarke — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this John Clarke across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 9-person household.
Age 20
b. ~1920
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Clarke |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Some House |
| Additional Details | |
| Occupation | Genner |
| Industry | Meat-Packer |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 650 |
| Highest Grade | H 4 |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Genner |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1920 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Bernice Clarke | Daughter | — | 22 | ~1918 |
| John Clarke | Son | — | 20 | ~1920 |
| Paul Clarke | Son | — | 12 | ~1928 |
| Patricia Clarke | Daughter | — | 14 | ~1926 |
| Mikel Clarke | Head | — | 60 | ~1880 |
| Joseph Clarke | Son | — | 23 | ~1917 |
| Francis Clarke | Son | — | 16 | ~1924 |
| Elizabeth Clarke | Spouse | — | 57 | ~1883 |
| William Clarke | Son | — | 25 | ~1915 |
Census Appearances
1930
Marion, Indiana
Son, age 10
Marion, Indiana · implied b. ~1920 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | John R. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 20
Marion-County, Indiana · implied b. ~1920 — 9 household members
| Surname | Clarke |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Some House |
| Occupation | Genner |
| Industry | Meat-Packer |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 650 |
| Highest Grade | H 4 |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Clarke
Son · 1940 · age 20 · b. ~1920 · Indiana
★ You are viewing this record
Sibling
Francis Clarke
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Clarke
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Clarke
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Clarke
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Clarke
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Clarke
Sibling · 1940 · age 25
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01129-01036)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lula M Poole | 49 | Wife | 0 | South Dakota |
| 42 | Howard R Poole | 22 | Son | Machinist | Minnesota |
| 43 | Genevieve Poole | 14 | Daughter | 0 | California |
| 44 | Jack T Poole | 10 | Son | 0 | Minnesota |
| 45 | Prentice L Cotton | 43 | Head | Plumber | Kansas |
| 46 | Lillian Cotton | 37 | Wife | 0 | Tennessee |
| 47 | Frank J Metzler | 38 | Head | Pressman | Indiana |
| 48 | Judith M Metzler | 30 | Wife | 0 | Ohio |
| 49 | Robert F Metzler | 10 | Son | 0 | Indiana |
| 50 | Thomas H Metzler | 1 | Son | 0 | Indiana |
| 51 | End Of Block 15 Begin Block 16 | None | — | — | — |
| 52 | Henry Brandt | 78 | Head | 0 | Germany |
| 53 | Ida Brandt | 68 | Wife | 0 | Indiana |
| 54 | August G Mueller | 52 | Head | State Official | Indiana |
| 55 | Agnes Mueller | 52 | Wife | 0 | Indiana |
| 56 | James Mueller | 15 | Son | 0 | Indiana |
| 57 | Carl G Gessert | 46 | Head | Proprietor | Indiana |
| 58 | Viola L Gessert | 30 | Wife | 0 | Illinois |
| 59 | Edward Crouse | 35 | Head | Manager | Indiana |
| 60 | Irene Crouse | 33 | Wife | 0 | Indiana |
| 61 | Ruann Crouse | 8 | Daughter | 0 | Indiana |
| 62 | Shirley Crouse | 5 | Daughter | 0 | Indiana |
| 63 | Frances L Yoke | 70 | Head | 0 | Indiana |
| 64 | Donald Gerkens | 43 | Head | Meat Inspector | Indiana |
| 65 | Myrtle Gerkens | 42 | Wife | 0 | Indiana |
| 66 | Martha Gerkens | 19 | Daughter | 0 | Indiana |
| 67 | Elizabeth Ann Gerkens | 12 | Daughter | 0 | Indiana |
| 68 | Samuel E Garrison | 54 | Head | Lawyer | Kansas |
| 69 | Edna A Garrison | 50 | Wife | 0 | Indiana |
| 70 | Alice L Garrison | 77 | Mother | 0 | Indiana |
| 71 | Mikel F Clarke | 60 | Head | Plumber | Indiana |
| 72 | Elizabeth R Clarke | 57 | Wife | 0 | Indiana |
| 73 | William P Clarke | 25 | Son | Salesman | Indiana |
| 74 | Joseph L Clarke | 23 | Son | Traveling Salesman | Indiana |
| 75 | Bernice L Clarke | 22 | Daughter | Stenographer | Indiana |
| 76 | John R Clarke THIS PERSON | 20 | Son | Genner | Indiana |
| 77 | Francis E Clarke | 16 | Son | 0 | Indiana |
| 78 | Patricia Ann Clarke | 14 | Daughter | 0 | Indiana |
| 79 | Paul B Clarke | 12 | Son | 0 | Indiana |
| 80 | Lewis J Wendling | 45 | Head | Chemist | Indiana |
Related Census Records
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)