MJ
Myrtle Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Myrtle Johnson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed), with identified parents Claus & Claus — first a daughter (b.~1913), then head of a 7-person household.
Age 27
b. ~1913
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Johnson |
| Given Name | Myrtle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | Assembler |
| Industry | Textile Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Assembler |
| Township / Ward | Rockford City |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Myrtle | Age | Birth yr |
|---|---|---|---|---|
| Myrtle Johnson | Daughter | — | 27 | ~1913 |
| Mildred Johnson | Daughter | — | 26 | ~1914 |
| Claus Johnson | Head | — | 70 | ~1870 |
| Gilbert Johnson | Son | — | 19 | ~1921 |
| Leonard Johnson | Son | — | 23 | ~1917 |
| Gunnar Johnson | Son | — | 37 | ~1903 |
| Ellen Johnson | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Winnebago, Illinois
Daughter, age 7
Winnebago, Illinois · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Myrtle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Winnebago, Illinois
Daughter, age 18
Winnebago, Illinois · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Myrtle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Driller |
| Industry | Machine Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Daughter, age 27
Winnebago-County, Illinois · implied b. ~1913 — 7 household members
| Surname | Johnson |
| Given Name | Myrtle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Occupation | Assembler |
| Industry | Textile Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | H 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 Myrtle Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Claus Johnson (~0.92 confidence) and father Claus Johnson (~0.92 confidence) and father Clement Johnson (~0.92 confidence) and mother Alma Johnson (~0.92 confidence) and mother Ellen Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Claus Johnson
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Claus Johnson
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Clement Johnson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Alma Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Ellen Johnson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Myrtle Johnson
Daughter · 1940 · age 27 · b. ~1913 · Illinois
★ You are viewing this record
Sibling
Gunnar Johnson
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Johnson
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gilbert Johnson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Johnson
Sibling · 1940 · age 23
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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00912-00429)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marion H. Dales | 16 | Daughter | — | Illinois |
| 2 | Roger L. Dales | 12 | Son | — | Illinois |
| 3 | Rosalie C. Dales | 10 | Daughter | — | Illinois |
| 4 | Claus Johnson | 70 | Head | Finisher | Sweden |
| 5 | Ellen Johnson | 56 | Wife | — | Sweden |
| 6 | Gunnar Johnson | 37 | Son | Receiv Clerk | Illinois |
| 7 | Myrtle Johnson THIS PERSON | 27 | Daughter | Assembler | Illinois |
| 8 | Mildred Johnson | 26 | Daughter | Assembler | Illinois |
| 9 | Leonard Johnson | 23 | Son | Finisher | Illinois |
| 10 | Gilbert Johnson | 19 | Son | Finisher | Illinois |
| 11 | William T. Lofgren | 27 | Head | Grinder | Illinois |
| 12 | Deloris E. Lofgren | 25 | Wife | — | Illinois |
| 13 | Jack Lofgren | 5 | Son | — | Illinois |
| 14 | Sandra Lofgren | 3 | Daughter | — | Illinois |
| 15 | Ernest Lindstrom | 48 | Head | Machinist | Illinois |
| 16 | Jessie Lindstrom | 52 | Wife | — | Illinois |
| 17 | Ray C. Jackson | 56 | Head | Sticker Hand | Illinois |
| 18 | Nellie G. Jackson | 49 | Wife | — | Illinois |
| 19 | Carson Jackson | 21 | Son | Office Clerk | Illinois |
| 20 | Beverly M. Jackson | 17 | Daughter | — | Illinois |
| 21 | Mildred Lindstrom | 35 | Boarder | Inspector | Illinois |
| 22 | Clarence A. Lord | 46 | Head | Appraiser | Illinois |
| 23 | Alice E. Lord | 41 | Wife | — | Illinois |
| 24 | Clarence Jr. Lord | 18 | Son | Laborer | Illinois |
| 25 | Laverne Lord | 17 | Son | — | Illinois |
| 26 | Kenneth Lord | 16 | Son | — | Illinois |
| 27 | Linnea Lord | 13 | Daughter | — | Illinois |
| 28 | Ethel Lord | 43 | Sister | — | Illinois |
| 29 | Byrd S. Albee | 34 | Head | Adm Asst | Minnesota |
| 30 | Ethel M. Albee | 38 | Wife | Housekeeper | Iowa |
| 31 | Philip Westman | 17 | Lodger | — | Iowa |
| 32 | Myrtle V. Johnson | 31 | Lodger | Machine Oper. | Illinois |
| 33 | Ernest Peterson | 45 | Head | Cabinet Maker | Sweden |
| 34 | Anna P. Peterson | 44 | Wife | — | Norway |
| 35 | Alma Peterson | 22 | Daughter | Clerk | Illinois |
| 36 | Laverne Peterson | 19 | Son | — | Illinois |
| 37 | Violet Peterson | 11 | Daughter | — | Illinois |
| 38 | Donald H. Leister | 34 | Head | Core Maker | Illinois |
| 39 | Helen E. Leister | 44 | Wife | Maid | Iowa |
| 40 | Edward Qualman | 38 | Lodger | Cook | Iowa |
Related Census Records
Pedigree Summary
Myrtle + 4 siblings
Gen 1 · 5 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)