RJ
Robert Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Indiana
Our Model Tree links this Robert Johnson across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Indiana (XGBoost, ~Confirmed), with identified parents Francis & Ethel — first a head (b.~1907), then head of a 5-person household.
Age 33
b. ~1907
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Indiana |
| Surname | Johnson |
| Given Name | Robert B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Delaware Twp. |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Occupation | Finisher |
| Industry | Rubber Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 476 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Finisher |
| Township / Ward | Delaware Twp |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Janet Johnson | Daughter | — | 4 | ~1936 |
| Robert Johnson | Head | — | 33 | ~1907 |
| Maurice Johnson | Son | — | ~1940 | |
| Robert Johnson | Son | — | 5 | ~1935 |
| Marvin Johnson | Spouse | — | 29 | ~1911 |
Census Appearances
1920
Hamilton, Indiana
Son, age 13
Hamilton, Indiana · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Robert B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Hamilton, Indiana
Son, age 23
Hamilton, Indiana · implied b. ~1907 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Robert B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Indiana |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Hamilton-County, Indiana
Head, age 33
Hamilton-County, Indiana · implied b. ~1907 — 5 household members
| Surname | Johnson |
| Given Name | Robert B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Delaware Twp. |
| 1935 Residence (County) | Hamilton |
| Occupation | Finisher |
| Industry | Rubber Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 476 |
| Highest Grade | Hs 4 |
| 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 Francis Johnson (~0.92 confidence) and mother Ethel Johnson (~0.92 confidence) and mother Bessie Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Francis Johnson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Ethel Johnson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Bessie Johnson
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Johnson
Head · 1940 · age 33 · b. ~1907 · Indiana
★ 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 — Hamilton-County, Indiana
Open full size
1940 US Federal Census — Hamilton-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01050-00176)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Iola Stewart | 46 | Cook | Cook | Michigan |
| 42 | Joseph Ryzner | 52 | Head | Painter | Austria |
| 43 | Katherine Ryzner | 47 | Wife | — | Indiana |
| 44 | Charles G. Schone | 19 | Nephew | — | Indiana |
| 45 | Don Beam | 40 | Head | Operator | N. Carolina |
| 46 | Ada O. Beam | 28 | Wife | — | Indiana |
| 47 | Dale D. Beam | 4 | Son | — | Indiana |
| 48 | Lawrence Barnhill | 36 | Head | Operator | Indiana |
| 49 | Marjory Barnhill | 27 | Wife | — | Indiana |
| 50 | Evelyn M. Barnhill | 10 | Daughter | — | Indiana |
| 51 | Howard M. Barnhill | 8 | Son | — | Indiana |
| 52 | William D. Bernhill | 64 | Head | Operator | Indiana |
| 53 | Arizona Bernhill | 64 | Wife | — | Indiana |
| 54 | John L. Castetter | 57 | Head | Operator | Indiana |
| 55 | Mattie Castetter | 55 | Wife | — | Indiana |
| 56 | Carl W. King | 35 | Head | Salesman | Indiana |
| 57 | Gladys E. King | 35 | Wife | — | Indiana |
| 58 | Jimmie W. King | 15 | Son | — | Indiana |
| 59 | Betty J. King | 13 | Daughter | — | Indiana |
| 60 | Carlene King | 16 | Daughter | — | Indiana |
| 61 | Barney Morgan | 63 | Head | Operator | Indiana |
| 62 | Mollie Morgan | 57 | Wife | — | Indiana |
| 63 | Betty Deagle | 15 | Granddaughter | — | Indiana |
| 64 | Elmer A. Johnson | 55 | Head | Manager | Indiana |
| 65 | Ida Johnson | 55 | Wife | — | Indiana |
| 66 | Milo C. Booth | 35 | Head | Operator | Indiana |
| 67 | Mary Booth | 34 | Wife | — | Indiana |
| 68 | Philip Booth | 10 | Son | — | Indiana |
| 69 | Richard L. Booth | 8 | Son | — | Indiana |
| 70 | Jennie S. Booth | 2 | Daughter | — | Indiana |
| 71 | Jessie Spear | 76 | Father-in-law | Assessor | Indiana |
| 72 | Robert B. Johnson THIS PERSON | 33 | Head | Finisher | Indiana |
| 73 | Marvin Y. Johnson | 29 | Wife | — | Indiana |
| 74 | Robert D. Johnson | 5 | Son | — | Indiana |
| 75 | Janet J. Johnson | 4 | Daughter | — | Indiana |
| 76 | Maurice F. Johnson | 0 | Son | — | Indiana |
| 77 | John E. Arthur | 76 | Head | — | Indiana |
| 78 | Addie E. Arthur | 71 | Wife | — | Indiana |
| 79 | Loren L. Brown | 44 | Head | School Teacher | Indiana |
| 80 | Ella B. Brown | 40 | Wife | — | Indiana |
Pedigree Summary
Robert
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)