MJ
Marion Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Marion Johnson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Minnie & Arthur — first a daughter (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | clerical |
| Industry | retail department |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerical |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1914 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marion | Age | Birth yr |
|---|---|---|---|---|
| Marion Johnson | Daughter | — | 26 | ~1914 |
| Minnie Johnson | Head | — | 60 | ~1880 |
| Raymond Johnson | Son | — | 37 | ~1903 |
Census Appearances
1920
Cook, Illinois
Other, age 6
Cook, Illinois · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Marion |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 16
Cook, Illinois · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 26
Cook-County, Illinois · implied b. ~1914 — 3 household members
| Surname | Johnson |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | clerical |
| Industry | retail department |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Marion Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Minnie Johnson (~0.92 confidence) and father Arthur Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Minnie Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Arthur Johnson
b. ~1889
Source father
● Household
· direct · ~0.92
This person
Anchor record
Marion Johnson
Daughter · 1940 · age 26 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
Raymond Johnson
Sibling · 1940 · age 37
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01023-00780)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Minnie R Johnson | 60 | Head | Housewife | Sweden |
| 2 | Raymond Johnson | 37 | Son | Machinist | Illinois |
| 3 | Marion Johnson THIS PERSON | 26 | Daughter | Clerical | Illinois |
| 4 | Charles Morris | 33 | Head | Chemical | Illinois |
| 5 | Marie R Morris | 34 | Wife | — | Illinois |
| 6 | Charles Morris | 5 | Son | — | Illinois |
| 7 | Robert Morris | 3 | Son | — | Illinois |
| 8 | Joan Morris | 1 | Son | — | Illinois |
| 9 | Henry Vogt | 37 | Head | Automobile Mechanic | Germany |
| 10 | Hedwig G Vogt | 31 | Wife | — | Germany |
| 11 | Henry Vogt | 5 | Son | — | Illinois |
| 12 | Dorothy Vogt | 1 | Daughter | — | Illinois |
| 13 | Matilda Gruening | 56 | Head | — | Germany |
| 14 | Winifred Gruening | 28 | Daughter | Typist | Illinois |
| 15 | Harry Daly | 53 | Head | Painter | Illinois |
| 16 | Marie L Daly | 39 | Wife | — | Illinois |
| 17 | Harry Daly | 4 | Son | — | Illinois |
| 18 | Chrl Roerding | 39 | Head | Plumber | Germany |
| 19 | Jeanette G Roerding | 36 | Wife | — | Wisconsin |
| 20 | Emma Johnson | 69 | Head | — | Sweden |
| 21 | Rhoda M Johnson | 46 | Daughter | — | Sweden |
| 22 | Carl Johnson | 41 | Son | Machinist | Illinois |
| 23 | Albert Rothrock | 51 | Head | Sign Cleaner | Kentucky |
| 24 | Kathryn D Rothrock | 48 | Wife | — | South Dakota |
| 25 | Hazel Rothrock | 29 | Daughter | Receptionist | Wisconsin |
| 26 | Matt Rogue | 37 | Son Law | Time Study | Illinois |
| 27 | Estelle Rogue | 31 | Daughter | — | Wisconsin |
| 28 | Patricia Rogue | 7 | Grand D | — | Illinois |
| 29 | Alfred Young | 57 | Head | Iron Worker | Sweden |
| 30 | Daisy Young | 56 | Wife | — | Illinois |
| 31 | Alfred R Young | 35 | Son | — | Illinois |
| 32 | John Cain | 34 | Head | Testman | Illinois |
| 33 | Pearl Cain | 35 | Wife | — | Illinois |
| 34 | Patricia Cain | 4 | Daughter | — | Illinois |
| 35 | Tillie Carlson | 65 | Head | — | Sweden |
| 36 | Edna Carlson | 37 | Daughter | Secretary | Illinois |
| 37 | Lucille Carlson | 34 | Daughter | — | Illinois |
| 38 | William Freese | 80 | Head | — | Germany |
| 39 | Bertha Freese | 71 | Wife | — | Norway |
| 40 | Alma R Johnson | 37 | Daughter | Adjustment Clerk | Illinois |
Pedigree Summary
Marion + 1 sibling
Gen 1 · 2 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)