LJ
Leon Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Macon-County, Illinois
Our Model Tree links this Leon Johnson across the 1920, 1930 and 1940 US Censuses in Macon-County, Illinois (XGBoost, ~Confirmed), with identified parents Albert & Algot — first a son (b.~1914), then head of a 8-person household.
Age 26
b. ~1914
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Macon-County, Illinois |
| Surname | Johnson |
| Given Name | Leon |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Decatur |
| Est. Birth Year | ~1914 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leon | Age | Birth yr |
|---|---|---|---|---|
| John Lang | Other | — | 31 | ~1909 |
| Harry Johnson | Son | — | 24 | ~1916 |
| Marie Johnson | Daughter | — | 25 | ~1915 |
| Martha Johnson | Daughter | — | 12 | ~1928 |
| Betty Johnson | Daughter | — | 14 | ~1926 |
| Albert Johnson | Head | — | 48 | ~1892 |
| Leon Johnson | Son | — | 26 | ~1914 |
| Ruth Johnson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Macon, Illinois
Son, age 6
Macon, Illinois · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leon |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Macon, Illinois
Son, age 16
Macon, Illinois · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leon |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Macon-County, Illinois
Son, age 26
Macon-County, Illinois · implied b. ~1914 — 8 household members
| Surname | Johnson |
| Given Name | Leon |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Highest Grade | No 6 |
| 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 Leon Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Johnson (~0.92 confidence) and father Algot Johnson (~0.92 confidence) and father Robert Johnson (~0.92 confidence) and mother Ruth Johnson (~0.92 confidence) and mother Ruth Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Johnson
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Algot Johnson
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Robert Johnson
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Ruth Johnson
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Ruth Johnson
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Leon Johnson
Son · 1940 · age 26 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
Marie Johnson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Johnson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Johnson
Sibling · 1940 · age 24
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 — Macon-County, Illinois
Open full size
1940 US Federal Census — Macon-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00843-00159)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Wright | 25 | Wife | Stenographer | Illinois |
| 2 | Clinton Wright | 41 | Head | Janitor | Illinois |
| 3 | Mae Wright | 5 | Daughter | — | Illinois |
| 4 | Pauline Wright | 20 | Daughter | Core Maker | Illinois |
| 5 | Lorraine Wright | 19 | Daughter | Core Maker | Illinois |
| 6 | William Mcellen | 67 | Head | Merchant | Illinois |
| 7 | Alta Mcellen | 67 | Wife | — | Illinois |
| 8 | Charles Purdue | 49 | Head | Carpenter Contractor | Illinois |
| 9 | Myrtle Purdue | 50 | Wife | — | Illinois |
| 10 | Dale R. Purdue | 19 | Son | — | Illinois |
| 11 | Virginia Purdue | 15 | Daughter | — | Illinois |
| 12 | Ray M. Hanson | 28 | Head | W.P.A. | Illinois |
| 13 | Gladys Hanson | 20 | Wife | — | Illinois |
| 14 | Ray A. Jr. Hanson | 5 | Son | — | Illinois |
| 15 | William Swank | 68 | Head | — | Ohio |
| 16 | Missouri Swank | 71 | Wife | — | Illinois |
| 17 | Alice Willis | 38 | Head | Clerk | Illinois |
| 18 | Edna Mrs. Garris | 76 | Aunt | — | Illinois |
| 19 | Jacqueline Willis | 17 | Daughter | — | Illinois |
| 20 | Lee Luss | 25 | Head | Chemist | Illinois |
| 21 | Dorothy Luss | 24 | Wife | — | Missouri |
| 22 | Marilyn Luss | 2 | Daughter | — | Illinois |
| 23 | Dewey Park | 42 | Head | Interior Decorator | Illinois |
| 24 | Flota Park | 35 | Wife | — | Illinois |
| 25 | Leroy Park | 19 | Son | Interior Decorator | Illinois |
| 26 | Dorothy Park | 17 | Daughter | — | Illinois |
| 27 | Darlene Park | 9 | Daughter | — | Illinois |
| 28 | Elizabeth Draper | 85 | Grandmother | — | Illinois |
| 29 | Albert Johnson | 48 | Head | City Fireman | Illinois |
| 30 | Ruth Johnson | 45 | Wife | — | Illinois |
| 31 | Leon Johnson THIS PERSON | 26 | Son | — | Illinois |
| 32 | Marie Johnson | 25 | Daughter | Second Cook | Illinois |
| 33 | Harry Johnson | 24 | Son | Clerk | Illinois |
| 34 | Betty Johnson | 14 | Daughter | — | Illinois |
| 35 | Martha Ann Johnson | 12 | Daughter | — | Illinois |
| 36 | John Lang | 31 | Lodger | Tool Maker | Germany |
| 37 | Wesley Roloff | 66 | Head | — | Illinois |
| 38 | Emma Roloff | 63 | Wife | — | Illinois |
| 39 | C. Blankenship | 24 | Head | Polisher | Illinois |
Pedigree Summary
Leon + 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)