MJ
Melvin Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Melvin Johnson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Carl & Oscar — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | shipping clerk |
| Industry | supplies |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 740 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Shipping Clerk |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1919 |
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 Melvin | Age | Birth yr |
|---|---|---|---|---|
| Carl Johnson | Head | — | 68 | ~1872 |
| Arnold Johnson | Son | — | 26 | ~1914 |
| Melvin Johnson | Son | — | 21 | ~1919 |
| Ewald Johnson | Son | — | 37 | ~1903 |
| Thea Johnson | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Speaks English | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 21
Cook-County, Illinois · implied b. ~1919 — 5 household members
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | shipping clerk |
| Industry | supplies |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 740 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 Melvin 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 Oscar Johnson (~0.92 confidence) and father Oscar Johnson (~0.92 confidence) and mother Amanda Johnson (~0.92 confidence) and mother Amanda Johnson (~0.92 confidence) and mother Thea Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Johnson
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Oscar Johnson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Oscar Johnson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Amanda Johnson
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Amanda Johnson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Thea Johnson
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Melvin Johnson
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Arnold Johnson
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ewald 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-t0627-00940-00168)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Dempsey | 38 | Lodger | Editor | Illinois |
| 2 | Carrie Macpherson | 31 | Maid | Maid | Scotland |
| 3 | Carl A. Johnson | 68 | Head | Watchman | Sweden |
| 4 | Thea A. Johnson | 49 | Wife | — | Minnesota |
| 5 | Ewald Johnson | 37 | Son | Refrigerator Repair Man | Illinois |
| 6 | Arnold Johnson | 26 | Son | Clerk | Illinois |
| 7 | Melvin Johnson THIS PERSON | 21 | Son | Shipping Clerk | Illinois |
| 8 | Witold Osman | 41 | Head | Machinist | Illinois |
| 9 | Dorothy A. Osman | 35 | Wife | — | Illinois |
| 10 | James Osman | 5 | Son | — | Illinois |
| 11 | Mary Leminon | 58 | Mother in law | Stenographer | Illinois |
| 12 | Lois Leminon | 32 | Sister in law | — | Illinois |
| 13 | Harrett Bogard | 54 | Head | Grinder | Illinois |
| 14 | Bertha A. Bogard | 49 | Wife | — | Austria |
| 15 | Harry Bogard | 26 | Head | Loader | Illinois |
| 16 | Barbara A. Bogard | 25 | Wife | — | Illinois |
| 17 | Barbara Bogard | 1 | Daughter | — | Illinois |
| 18 | Bruno Olson | 53 | Head | Helper Engine Room | Sweden |
| 19 | Hilda A. Olson | 49 | Wife | — | Illinois |
| 20 | John Westergren | 76 | Head | Watchman | Sweden |
| 21 | Sophia Westergren | 74 | Wife | — | Sweden |
| 22 | — | None | — | — | — |
| 23 | Fred A. Stevens | 69 | Head | — | England |
| 24 | Edna N. Stevens | 60 | Wife | School Teacher | Ohio |
| 25 | Hjalmar Bengston | 44 | Head | Carpenter | Minnesota |
| 26 | Myrtle A. Bengston | 39 | Wife | — | Illinois |
| 27 | Lorraine Bengston | 10 | Daughter | — | Illinois |
| 28 | Marilyn Bengston | 3 | Daughter | — | Illinois |
| 29 | Clarence Schricht | 32 | Head | Cost Accountant | Illinois |
| 30 | Lillian A. Schricht | 30 | Wife | — | Illinois |
| 31 | Susanne Schricht | 5 | Daughter | — | Illinois |
| 32 | Edna Kester | 46 | Head | — | Illinois |
| 33 | Carol Mae Kester | 7 | Daughter | — | Illinois |
| 34 | Charles Lemmon | 69 | Father | — | Illinois |
| 35 | Parker P. Jones | 45 | Head | Scrap Broker | New York |
| 36 | Anne G. A. Jones | 45 | Wife | — | Illinois |
| 37 | Parker P. Jr. Jones | 20 | Son | — | Illinois |
| 38 | Herbert Hellstrom | 46 | Head | General Agent | Illinois |
| 39 | Bertha A. Hellstrom | 45 | Wife | — | New York |
| 40 | Richard Hellstrom | 17 | Son | Page Boy | Illinois |
Pedigree Summary
Melvin + 2 siblings
Gen 1 · 6 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)