LJ
Leslie Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Leslie Johnson across the 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Johnson |
| Given Name | Leslie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rockford |
| Est. Birth Year | ~1926 |
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 Leslie | Age | Birth yr |
|---|---|---|---|---|
| Andrew Johnson | Head | — | 60 | ~1880 |
| Nancy Johnson | Son | — | 16 | ~1924 |
| Leslie Johnson | Son | — | 14 | ~1926 |
| Arnold Johnson | Son | — | 11 | ~1929 |
| Elvira Johnson | Daughter | — | 5 | ~1935 |
| Evelyn Johnson | Daughter | — | 18 | ~1922 |
| Hilda Johnson | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Rock Winnebago, …
Son, age 5
Rock Winnebago, Illinois · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leslie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Son, age 14
Winnebago-County, Illinois · implied b. ~1926 — 7 household members
| Surname | Johnson |
| Given Name | Leslie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford |
| 1935 Residence (County) | Winnebago |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 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 Leslie Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leslie Johnson
Son · 1940 · age 14 · b. ~1926 · Illinois
★ You are viewing this record
Sibling
Elvira Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arnold Johnson
Sibling · 1940 · age 11
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-t0627-00913-00694)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Hodges | 54 | Head | Plumber | Canada English |
| 42 | Augusta Hodges | 48 | Wife | — | Illinois |
| 43 | Marshall Hodges | 24 | Son | Truck Driver | Illinois |
| 44 | John M Soderberg | 49 | Head | Furnace Operator | Sweden |
| 45 | Muriel Soderberg | 48 | Wife | Housework | Sweden |
| 46 | Le Roy Soderberg | 14 | Son | — | Illinois |
| 47 | Marion Soderberg | 12 | Daughter | — | Illinois |
| 48 | Lester Gerrall | 29 | Lodger | Machine Operator | Pennsylvania |
| 49 | Here Gerrall | None | ends | — | 566 |
| 50 | Arthur Rolland | 36 | Head | Grinder | Iowa |
| 51 | Helen Rolland | 34 | Wife | — | Illinois |
| 52 | Patsy Ruth Rolland | 9 | Daughter | — | Illinois |
| 53 | Burton Rolland | 6 | Son | — | Illinois |
| 54 | Anna Swanson | 55 | Head | Cook | Sweden |
| 55 | Helen Swanson | 23 | Daughter | Inspector | Illinois |
| 56 | John, Jr. Swanson | 22 | Son | Apprentice Toolmaker | Illinois |
| 57 | Paul Swanson | 20 | Son | Sprayer | Illinois |
| 58 | Ray Swanson | 17 | Son | — | Illinois |
| 59 | Harold Olson | 32 | Head | Garnishing Worker | Illinois |
| 60 | Evelyn Olson | 22 | Wife | — | Illinois |
| 61 | Charles Olson | 5 | Son | — | Illinois |
| 62 | Frank Olson | 35 | Brother | Sawyer | Illinois |
| 63 | Reinhold Carl Luebke | 46 | Head | Attendant | Wisconsin |
| 64 | Clara Luebke | 52 | Wife | — | Illinois |
| 65 | Arnold Zimmerly | 24 | Step-son | Attendant | Wisconsin |
| 66 | Clyde Rhode | 26 | Lodger | Attendant | Wisconsin |
| 67 | Andrew Johnson | 60 | Head | Cement Worker | Sweden |
| 68 | Hilda Johnson | 41 | Wife | — | Sweden |
| 69 | Evelyn Johnson | 18 | Daughter | Fasener | Illinois |
| 70 | Nancy Johnson | 16 | Son | New Worker | Illinois |
| 71 | Leslie Johnson THIS PERSON | 14 | Son | — | Illinois |
| 72 | Arnold Johnson | 11 | Son | — | Illinois |
| 73 | Elvira Johnson | 5 | Daughter | — | Illinois |
| 74 | Stanley Greenberg | 29 | Head | Apprentice Machinist | Illinois |
| 75 | June Greenberg | 23 | Wife | — | Wisconsin |
| 76 | Donna Greenberg | 3 | Daughter | — | Illinois |
| 77 | Glenn Greenberg | 1 | Son | — | Illinois |
| 78 | Eric, C. Erickson | 52 | Head | Automobile Mechanic | Sweden |
| 79 | Anna O Erickson | 53 | Wife | — | Sweden |
| 80 | Ida Johnson | 61 | Head | Alter Woman | Illinois |
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)