EJ
Eugene Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Eugene Johnson across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents James & Eugene — first a son (b.~1918), then head of a 9-person household.
Age 22
b. ~1918
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Johnson |
| Given Name | Eugene H. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1918 |
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 Eugene | Age | Birth yr |
|---|---|---|---|---|
| H King | Daughter | — | 13 | ~1927 |
| Fletcher King | Head | — | 36 | ~1904 |
| Louis Grossman | Other | — | 54 | ~1886 |
| Samantha King | Other | — | 69 | ~1871 |
| James King | Son | — | 9 | ~1931 |
| Howard King | Son | — | 10 | ~1930 |
| Eugene Johnson | Son | — | 22 | ~1918 |
| Bertha Grossman | Spouse | — | 53 | ~1887 |
| Margaret King | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Marion, Indiana
Son, age 2
Marion, Indiana · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Eugene Howard Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 12
Marion, Indiana · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Eugene H. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 22
Marion-County, Indiana · implied b. ~1918 — 9 household members
| Surname | Johnson |
| Given Name | Eugene H. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 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 Eugene Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James King (~0.85 confidence) and father Eugene Johnson (~0.92 confidence) and father Eugene Johnson (~0.92 confidence) and mother Anna Johnson (~0.92 confidence) and mother Bertha Grossman (~0.92 confidence) and father Fletcher King (~0.92 confidence) and mother Margaret King (~0.60 confidence). The pedigree spans 2 generations with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.86
Father
James King
b. ~1867
Source father>father
● Household
· direct · ~0.85
Father
Eugene Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Eugene Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Anna Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Bertha Grossman
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Fletcher King
b. ~1904
Source father
● Household
· direct · ~0.92
Mother
Margaret King
b. ~1907
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Eugene Johnson
Son · 1940 · age 22 · b. ~1918 · Indiana
★ You are viewing this record
Sibling
James King
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
H King
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard King
Sibling · 1940 · age 10
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
13 people indexed on this census page (nara:1940:m-t0627-01131-00288)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 3 | Ernest Hughes | 47 | Head | City Police Officer | Indiana |
| 4 | Mable J. Hughes | 47 | Wife | — | Indiana |
| 5 | Edward O. Mills | 54 | Lodger | Proprietor | Indiana |
| 6 | Hazel Mills | 48 | Lodger | Office Manager | Indiana |
| 7 | Fletcher P. King | 36 | Head | Sign Painter | Indiana |
| 8 | Margaret H. King | 33 | Wife | Proprietor | Indiana |
| 9 | H. Joanne King | 13 | Daughter | — | Indiana |
| 10 | Howard H. King | 10 | Son | — | Indiana |
| 11 | James R. King | 9 | Son | — | Indiana |
| 12 | Samantha King | 69 | Mother | — | Indiana |
| 14 | Eugene H. Jr. Johnson THIS PERSON | 22 | Son | — | Indiana |
| 15 | Louis L. Grossman | 54 | Lodger | President | Maine |
| 16 | Bertha Grossman | 53 | Wife | — | Kentucky |
Pedigree Summary
Eugene + 3 siblings
Gen 1 · 6 parents
~0.87
Gen 2 · 1 grandparents
~0.85
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)