OJ
Oliver Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Oliver Johnson across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 13-person household.
Age 10
b. ~1930
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Johnson |
| Given Name | Oliver |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1930 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oliver | Age | Birth yr |
|---|---|---|---|---|
| Juanita Mcguire | Other | — | 12 | ~1928 |
| Lois Johnson | Daughter | — | 11 | ~1929 |
| Mettie Roberson | Other | — | 24 | ~1916 |
| Burcus Mcguire | Other | — | 12 | ~1928 |
| Mary Johnson | Daughter | — | 21 | ~1919 |
| Lester Johnson | Son | — | 18 | ~1922 |
| Lester Johnson | Head | — | 44 | ~1896 |
| Martha Johnson | Daughter | — | 20 | ~1920 |
| Mattie Roberson | Other | — | 21 | ~1919 |
| Alice Johnson | Spouse | — | 40 | ~1900 |
| Charlotte Johnson | Daughter | — | 16 | ~1924 |
| Oliver Johnson | Son | — | 10 | ~1930 |
| Walker Johnson | Son | — | 12 | ~1928 |
Census Appearances
1930
Marion, Indiana
Son, age
Marion, Indiana · implied b. ~1930 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oliver W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 10
Marion-County, Indiana · implied b. ~1930 — 13 household members
| Surname | Johnson |
| Given Name | Oliver |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Highest Grade | No 4 |
| 1935 Residence | Indiana |
| 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 Oliver Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Oliver Johnson
Son · 1940 · age 10 · b. ~1930 · Indiana
★ You are viewing this record
Sibling
Walker Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester 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-t0627-01123-00304)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nettie | 19 | Wife | — | Tennessee |
| 2 | James | 3 | Son | — | Tennessee |
| 3 | Joy | 1 | Daughter | — | Indiana |
| 4 | Harvey Moore | 29 | Head | Meat Cutter | Arkansas |
| 5 | Anna Moore | 30 | Wife | — | Tennessee |
| 6 | James Baker | 28 | Uncle | Paper Hanger | Tennessee |
| 7 | James W. Hosen | 15 | Cousin | — | Tennessee |
| 8 | Lester Johnson | 44 | Head | Street Commissioner | Indiana |
| 9 | Alice Johnson | 40 | Wife | — | Indiana |
| 10 | Mary B. Johnson | 21 | Daughter | Maid | Indiana |
| 11 | Martha Johnson | 20 | Daughter | Maid | Indiana |
| 12 | Lester Jr. Johnson | 18 | Son | Copy Boy | Indiana |
| 13 | Charlotte Johnson | 16 | Daughter | — | Indiana |
| 14 | Walker Johnson | 12 | Son | — | Indiana |
| 15 | Lois Johnson | 11 | Daughter | — | Indiana |
| 16 | Oliver Johnson THIS PERSON | 10 | Son | — | Indiana |
| 17 | Mettie Walker Roberson | 24 | Step Son | Porter | Indiana |
| 18 | Mattie Roberson | 21 | Step Daughter | — | Indiana |
| 19 | Burcus Mcguire | 12 | Step Son | — | Indiana |
| 20 | Juanita Mcguire | 12 | Step Daughter | — | Indiana |
| 21 | Richard Quareles | 53 | Head | Laborer | Kentucky |
| 22 | Elmira Quareles | 48 | Wife | — | Tennessee |
| 23 | Leroy Quareles | 28 | Son | Shoe Shiner | Tennessee |
| 24 | Frazer Campbell | 56 | Head | Truck Driver | Kentucky |
| 25 | Helen Campbell | 48 | Wife | — | Ohio |
| 26 | Moses Blakemore | 45 | Head | Barber | Kentucky |
| 27 | Sarah Blakemore | 40 | Wife | — | Kentucky |
| 28 | Eleanore Blakemore | 16 | Daughter | — | Indiana |
| 29 | Virginia Blakemore | 15 | Daughter | — | Indiana |
| 30 | Delores Blakemore | 13 | Daughter | — | Indiana |
| 31 | Betty Blakemore | 11 | Daughter | — | Indiana |
| 32 | Leo Blakemore | 22 | Son | Bus Boy | Kentucky |
| 33 | Lott Lewis | 24 | Son-in-law | Mechanic | Kentucky |
| 34 | Hallie Lewis | 19 | Daughter | — | Indiana |
| 35 | Claudio Blakemore | 38 | Brother | Puddle Charger | Kentucky |
| 36 | Nora Blakemore | 42 | Sister-in-law | Maid | Indiana |
| 37 | Verin Young | 46 | Head | Forge Hammer | Indiana |
| 38 | Marie Young | 45 | Wife | Candy Worker | Indiana |
| 39 | Billy Young | 16 | Son | — | Indiana |
| 40 | Jean Young | 14 | Daughter | — | Indiana |
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)