RJ
Roy Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Alabama
Our Model Tree links this Roy Johnson across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Alabama (XGBoost, ~Confirmed), with identified parents Carl & Carl — first a son (b.~1903), then head of a 5-person household.
Age 37
b. ~1903
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Alabama |
| Surname | Johnson |
| Given Name | Roy |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Birmingham City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | painter |
| Industry | own account |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same Place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Painter |
| Township / Ward | Birmingham City |
| Est. Birth Year | ~1903 |
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 Roy | Age | Birth yr |
|---|---|---|---|---|
| Betty Johnson | Daughter | — | 12 | ~1928 |
| Allie Johnson | Daughter | — | 33 | ~1907 |
| Carl Johnson | Head | — | 78 | ~1862 |
| Ebb Johnson | Son | — | 39 | ~1901 |
| Roy Johnson | Son | — | 37 | ~1903 |
Census Appearances
1920
Jefferson, Alabama
Son, age 16
Jefferson, Alabama · implied b. ~1904 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Jefferson, Alabama
Son, age 25
Jefferson, Alabama · implied b. ~1905 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Roy S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Painter |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Jefferson-County, Alabama
Son, age 37
Jefferson-County, Alabama · implied b. ~1903 — 5 household members
| Surname | Johnson |
| Given Name | Roy |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Birmingham City |
| 1935 Residence (County) | Jefferson |
| Occupation | painter |
| Industry | own account |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same Place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Roy Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carl Johnson (~0.92 confidence) and father Carl Johnson (~0.92 confidence) and father Charles Johnson (~0.92 confidence) and mother Hilda Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Johnson
b. ~1862
Source father
● Household
· direct · ~0.92
Father
Carl Johnson
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Charles Johnson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Hilda Johnson
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Roy Johnson
Son · 1940 · age 37 · b. ~1903 · Alabama
★ You are viewing this record
Sibling
Allie Johnson
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ebb Johnson
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Johnson
Sibling · 1940 · age 12
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 — Jefferson-County, Alabama
Open full size
1940 US Federal Census — Jefferson-County, Alabama
Page Contents
29 people indexed on this census page (nara:1940:m-t0627-00098-00183)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gillem, Paula Villason | 9 | daughter | — | Alabama |
| 42 | Shirley Villason | 7 | daughter | — | Alabama |
| 43 | Gordon Jr. Villason | 5 | son | — | Alabama |
| 44 | James Lamb | 46 | Head | Diesel Helper | Georgia |
| 45 | Gladys Lamb | 38 | wife | None | Alabama |
| 46 | Billy Lamb | 14 | son | None | Alabama |
| 47 | Tommy Lamb | 10 | son | — | Alabama |
| 48 | Mable Lamb | 4 | daughter | — | Alabama |
| 49 | Daphy Meeks | 58 | mother | None | Alabama |
| 50 | Dalton Evans | 22 | Head | Iron Worker | Illinois |
| 51 | Juliette Evans | 19 | wife | None | Alabama |
| 52 | Henry Henderson | 53 | Head | Section Foreman | Tennessee |
| 53 | Maggie Henderson | 52 | wife | None | Scotland |
| 54 | Henry Henderson | 19 | son | Washer Helper | Alabama |
| 55 | Mary Ellis | 24 | daughter | None | Alabama |
| 56 | Joanna Ellis | 5 | daughter | — | Alabama |
| 58 | Crancy Cobb | 44 | Head | Stationary Engineer | Florida |
| 59 | Madie Cobb | 40 | wife | None | Alabama |
| 60 | Carney Cobb | 11 | daughter | — | Alabama |
| 61 | Carl Johnson | 78 | Head | Painter | Sweden |
| 62 | Ebb Johnson | 39 | son | Painter | Michigan |
| 63 | Roy Johnson THIS PERSON | 37 | son | Painter | Michigan |
| 64 | Allie Johnson | 33 | daughter | Operator | Alabama |
| 65 | Betty Johnson | 12 | daughter | — | Alabama |
| 66 | Bill Lamment | 30 | Head | Stationary Engineer | Alabama |
| 67 | Martha Lamment | 26 | wife | None | Alabama |
| 68 | Billy Lamment | 5 | son | — | Alabama |
| 69 | John Lamment | 4 | son | — | Alabama |
| 70 | Sylvia Lamment | 1 | daughter | — | Alabama |
Pedigree Summary
Roy + 3 siblings
Gen 1 · 4 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)