MJ
Myrtle Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Myrtle Johnson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Myrtle |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Norwood Park |
| Est. Birth Year | ~1913 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Myrtle | Age | Birth yr |
|---|---|---|---|---|
| Joan Johnson | Daughter | — | 7 | ~1933 |
| Carl Johnson | Head | — | 31 | ~1909 |
| Carl Johnson | Son | — | 4 | ~1936 |
| Myrtle Johnson | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Cook, Illinois
Other, age 7
Cook, Illinois · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Myrtle |
| Relationship to Head | friend |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Other, age 17
Cook, Illinois · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Myrtle |
| Relationship to Head | Roomer |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| 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
Spouse, age 27
Cook-County, Illinois · implied b. ~1913 — 4 household members
| Surname | Johnson |
| Given Name | Myrtle |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| 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 Myrtle Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Myrtle Johnson
Spouse · 1940 · age 27 · b. ~1913 · Illinois
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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-t0627-00784-00350)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nancy Smith | 6 | Daughter | — | Illinois |
| 2 | Fred Koch | 50 | Head | Laborer | Illinois |
| 3 | Veronica Koch | 54 | Wife | — | Poland |
| 4 | Marie Koch | 19 | Daughter | Office Clerk | Illinois |
| 5 | Albert Wojcik | 41 | Head | Laborer | Illinois |
| 6 | Agatha Wojcik | 33 | Wife | Janitress | Illinois |
| 7 | Jeanett Wojcik | 13 | Daughter | — | Illinois |
| 8 | Vincent Boyle | 40 | Head | Repairman | Pennsylvania |
| 9 | Alma Boyle | 43 | Wife | — | Illinois |
| 10 | Joe Iannacco | 46 | Head | Proprietor | Italy |
| 11 | Rose Iannacco | 47 | Wife | — | Italy |
| 12 | Adeline Iannacco | 18 | Daughter | — | Louisiana |
| 13 | Grace Iannacco | 16 | Daughter | — | Illinois |
| 14 | Nancy Iannacco | 13 | Daughter | — | Illinois |
| 15 | Antoinette Iannacco | 10 | Daughter | — | Illinois |
| 16 | Anthony Iannacco | 8 | Son | — | Illinois |
| 17 | Carl Iannacco | 6 | Son | — | Illinois |
| 18 | Carl Johnson | 31 | Head | Draftsman | Illinois |
| 19 | Myrtle Johnson THIS PERSON | 27 | Wife | — | Illinois |
| 20 | Joan Johnson | 7 | Daughter | — | Illinois |
| 21 | Carl Jr. Johnson | 4 | Son | — | Illinois |
| 22 | Ernest Fahr | 46 | Head | Electrician | Missouri |
| 23 | Eleanora Fahr | 31 | Wife | — | Illinois |
| 24 | Eleanor Fahr | 9 | Daughter | — | Illinois |
| 25 | Nancy Fahr | 6 | Daughter | — | Illinois |
| 26 | Elmer Forbear | 30 | Head | Milk Delivery | Michigan |
| 27 | May Forbear | 30 | Wife | — | Michigan |
| 28 | Joan Forbear | 9 | Daughter | — | Michigan |
| 29 | Barbara Forbear | 8 | Daughter | — | Michigan |
| 30 | William Berndt | 60 | Head | Laborer | Germany |
| 31 | Martha Berndt | 55 | Wife | — | Illinois |
| 32 | Grace Berndt | 28 | Daughter | Clerk | Illinois |
| 33 | Felix Leffner | 54 | Head | Dissembler | Illinois |
| 34 | Cecilia Leffner | 29 | Wife | — | Illinois |
| 35 | Gloria Leffner | 2 | Daughter | — | Illinois |
| 36 | Otto Rollin | 39 | Head | Laborer | Sweden |
| 37 | Lydia Rollin | 30 | Wife | — | Illinois |
| 38 | Arlene Rollin | 9 | Daughter | — | Illinois |
| 39 | Phyllis Rollin | 4 | Daughter | — | Illinois |
| 40 | Andrew Shakespeare | 50 | Head | Glazer | Texas |
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)