LJ
Lewis Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Macoupin-County, Illinois
Our Model Tree links this Lewis Johnson across the 1930 and 1940 US Censuses in Macoupin-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Macoupin-County, Illinois |
| Surname | Johnson |
| Given Name | Lewis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | South Otter twp |
| 1935 Residence (County) | Macoupin |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | South Otter Twp |
| Est. Birth Year | ~1927 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lewis | Age | Birth yr |
|---|---|---|---|---|
| Mary Johnson | Daughter | — | 6 | ~1934 |
| Cella Johnson | Daughter | — | 12 | ~1928 |
| Lola Johnson | Daughter | — | 15 | ~1925 |
| Florence Johnson | Daughter | — | 18 | ~1922 |
| Elmer Johnson | Head | — | 44 | ~1896 |
| Lewis Johnson | Son | — | 13 | ~1927 |
| James Johnson | Son | — | 17 | ~1923 |
| William Johnson | Son | — | 10 | ~1930 |
| Clara Johnson | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Macoupin, Illinois
Son, age 4
Macoupin, Illinois · implied b. ~1926 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Lewis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Macoupin-County, Illinois
Son, age 13
Macoupin-County, Illinois · implied b. ~1927 — 9 household members
| Surname | Johnson |
| Given Name | Lewis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | South Otter twp |
| 1935 Residence (County) | Macoupin |
| 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 Lewis Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lewis Johnson
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Lola Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cella Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Johnson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Johnson
Sibling · 1940 · age 17
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 — Macoupin-County, Illinois
Open full size
1940 US Federal Census — Macoupin-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00847-00370)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Thomas Laycock | 81 | Head | — | Illinois |
| 42 | Martha D Laycock | 78 | Wife | — | Illinois |
| 43 | William Slightom | 16 | Lodger | — | Illinois |
| 44 | Ray Hantla | 31 | Head | Laborer | Illinois |
| 45 | Thelma D Hantla | 29 | Wife | — | Illinois |
| 46 | Lois Hantla | 8 | Daughter | — | Illinois |
| 47 | Mary Hantla | 5 | Daughter | — | Illinois |
| 48 | Kenneth Hantla | 2 | Son | — | Illinois |
| 49 | Richard Krueger | 54 | Head | Farmer | Illinois |
| 50 | Rena D Krueger | 46 | Wife | — | Illinois |
| 51 | Leroy Krueger | 21 | Son | Laborer | Illinois |
| 52 | Alfred Krueger | 18 | Son | Laborer | Illinois |
| 53 | Elmer Krueger | 15 | Son | — | Illinois |
| 54 | John C Edwards | 61 | Head | Farmer | Illinois |
| 55 | Ruth Edwards | 54 | Wife | — | Illinois |
| 56 | Helen Edwards | 15 | Daughter | — | Illinois |
| 57 | Melvin Edwards | 14 | Son | — | Illinois |
| 58 | Elmer Johnson | 44 | Head | Farmer | Illinois |
| 59 | Clara Johnson | 45 | Wife | — | Illinois |
| 60 | Florence Johnson | 18 | Daughter | — | Illinois |
| 61 | James D Johnson | 17 | Son | — | Illinois |
| 62 | Lola Johnson | 15 | Daughter | — | Illinois |
| 63 | Lewis Johnson THIS PERSON | 13 | Son | — | Illinois |
| 64 | Cella Johnson | 12 | Daughter | — | Illinois |
| 65 | William Johnson | 10 | Son | — | Illinois |
| 66 | Mary Johnson | 6 | Daughter | — | Illinois |
| 67 | Gilbert R Edwards | 30 | Head | Laborer | Illinois |
| 68 | Dorothy Edwards | 22 | Wife | — | Illinois |
| 69 | Louis Blume | 58 | Father-in-law | — | Illinois |
| 70 | Walter Lange | 52 | Head | Farmer | Illinois |
| 71 | Lumanda Lange | 52 | Wife | — | Illinois |
| 72 | Harold Lange | 16 | Son | — | Illinois |
| 73 | Thomas D Weller | 68 | Head | Farmer | Illinois |
| 74 | Harriet Weller | 68 | Wife | — | Illinois |
| 75 | Harriet Weller | 23 | Daughter | — | Illinois |
| 76 | Ray Weller | 29 | Head | Farmer | Illinois |
| 77 | Mildred Weller | 25 | Wife | — | Illinois |
| 78 | Carol Weller | 5 | Daughter | — | Illinois |
| 79 | Thomas D Dufner | 65 | Head | Farmer | Illinois |
| 80 | Sarah Dufner | 59 | Wife | — | 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)