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Robert Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Robert Johnson across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Charles & Aurelius — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Johnson |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Youth Worker |
| Industry | N.Y.A. Project |
| Class of Worker | GW |
| Hours Worked | 48 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Youth Worker |
| Township / Ward | Indianapolis |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Johnson | Daughter | — | 16 | ~1924 |
| Aurelius Johnson | Head | — | 38 | ~1902 |
| Robert Johnson | Son | — | 21 | ~1919 |
| James Johnson | Son | — | 18 | ~1922 |
Census Appearances
1920
Marion, Indiana
Son, age
Marion, Indiana · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Robert D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 10
Marion, Indiana · implied b. ~1920 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Robert L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 21
Marion-County, Indiana · implied b. ~1919 — 4 household members
| Surname | Johnson |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Youth Worker |
| Industry | N.Y.A. Project |
| Class of Worker | GW |
| Hours Worked | 48 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| 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 Robert Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Johnson (~0.92 confidence) and father Aurelius Johnson (~0.92 confidence) and mother Wilma Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Johnson
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Aurelius Johnson
b. ~1902
Source father
● Household
· direct · ~0.92
Mother
Wilma Johnson
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Johnson
Son · 1940 · age 21 · b. ~1919 · Indiana
★ You are viewing this record
Sibling
Mary Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Johnson
Sibling · 1940 · age 18
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-t0627-01132-00167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Fox | 53 | Head | Proprietor | Colorado |
| 2 | Viola Fox | 48 | Wife | — | Colorado |
| 3 | Jessie Fox | 23 | Son | Printer | Colorado |
| 4 | Samuel Turner | 60 | Head | Common Laborer | Tennessee |
| 5 | Ida M. Turner | 49 | Wife | — | Tennessee |
| 6 | Sadye M. Turner | 27 | Daughter | Stenographer | Tennessee |
| 7 | Lucy Balis | 85 | Mother-in-law | — | Tennessee |
| 8 | Edward Pennington | 81 | Head | — | Virginia |
| 9 | Fannie Pennington | 81 | Wife | — | Kentucky |
| 10 | Henry Pennington | 56 | Son | Houseman | Kentucky |
| 11 | Lamb Pennington | 46 | Son | Laborer | Kentucky |
| 12 | John Ella Pennington | 66 | Daughter | Cook | Kentucky |
| 13 | Robert Pennington | 45 | Grandson | Houseman | Kentucky |
| 14 | Mamie Flowers | 39 | Head | — | Kentucky |
| 15 | Aurelius Johnson | 38 | Head | Food Packer | Tennessee |
| 16 | Robert L. Johnson THIS PERSON | 21 | Son | Youth Worker | Indiana |
| 17 | James W. (Jr.) Johnson | 18 | Son | Laborer | Indiana |
| 18 | Mary Johnson | 16 | Daughter | — | Indiana |
| 19 | Alonzo Garden | 47 | Head | Common Laborer | Indiana |
| 20 | Lula Garden | 48 | Wife | — | Kentucky |
| 21 | Kenneth Miller | 25 | Nephew | Laborer | Indiana |
| 22 | Nephew Cornell | None | M | — | — |
| 23 | Lemuel Cornell | 4 | Nephew | — | Indiana |
| 24 | Charles Wallace | 39 | Head | Porter | Indiana |
| 25 | Lillian Wallace | 44 | Wife | — | Indiana |
| 26 | Herbert Brown | 50 | Head | Laborer | Kentucky |
| 27 | Carrie Brown | 52 | Wife | — | Kentucky |
| 28 | Tull E. Brown | 56 | Head | Proprietor | Ohio |
| 29 | Hattie R. Brown | 56 | Wife | — | Kentucky |
| 30 | Willie Deans | 53 | Head | House Cleaning | Kentucky |
| 31 | Lula Deans | 38 | Wife | — | Kentucky |
| 32 | Della Prim | 29 | Head | Day Worker | Tennessee |
| 33 | Ageeza Houston | 64 | Mother | — | Tennessee |
| 34 | French Cushingberry | 29 | Head | — | Indiana |
| 35 | Edward Cushingberry | 14 | Son | — | Indiana |
| 36 | Bettie Cushingberry | 11 | Daughter | — | Indiana |
| 37 | Albert Cushingberry | 10 | Son | — | Indiana |
| 38 | Mattie Willis | 42 | Head | Day Worker | Kentucky |
| 39 | Fannie Shannon | 60 | Head | Maid | Tennessee |
| 40 | Georgia A. Turner | 42 | Head | Cook | Kentucky |
Pedigree Summary
Robert + 2 siblings
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)