LJ
Louis Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Putnam-County, Illinois
Our Model Tree links this Louis Johnson across the 1920, 1930 and 1940 US Censuses in Putnam-County, Illinois (XGBoost, ~Confirmed), with identified parents Frank & Frank — first a son (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Putnam-County, Illinois |
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Magnolia |
| 1935 Residence (County) | Putnam |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 888 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Magnolia |
| Est. Birth Year | ~1915 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Louis | Age | Birth yr |
|---|---|---|---|---|
| Mabel Johnson | Daughter | — | 35 | ~1905 |
| Frank Johnson | Head | — | 69 | ~1871 |
| Richard Johnson | Son | — | 20 | ~1920 |
| Louis Johnson | Son | — | 25 | ~1915 |
| M Johnson | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Putnam, Illinois
Son, age 4
Putnam, Illinois · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Putnam, Illinois
Son, age 14
Putnam, Illinois · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Putnam-County, Illinois
Son, age 25
Putnam-County, Illinois · implied b. ~1915 — 5 household members
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Magnolia |
| 1935 Residence (County) | Putnam |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 888 |
| Highest Grade | Hs 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 Louis Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Johnson (~0.92 confidence) and father Frank Johnson (~0.92 confidence) and father Frank Johnson (~0.92 confidence) and mother M Johnson (~0.92 confidence) and mother Matilda Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Johnson
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Frank Johnson
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Frank Johnson
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
M Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Matilda Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Louis Johnson
Son · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Sibling
Richard Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Johnson
Sibling · 1940 · age 35
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 — Putnam-County, Illinois
Open full size
1940 US Federal Census — Putnam-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00871-00134)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Claudia Renini | 29 | daughter | Waitress | Illinois |
| 42 | Frank Santi | 75 | Father | None | Italy |
| 43 | Ralph A. Paxson | 51 | head | Farmer | Illinois |
| 44 | Elsie Paxson | 52 | wife | — | Illinois |
| 45 | Robert Martin | 24 | head | Farmer | Illinois |
| 46 | Nora May Martin | 18 | wife | — | Illinois |
| 47 | Ethel Iris Martin | 1 | daughter | — | Illinois |
| 48 | Winslow Perley Newton | 71 | head | Farmer | Maine |
| 49 | David L. Newton | 33 | son | Farmer | Illinois |
| 50 | Homer Stephens | 44 | head | Farmer | Ohio |
| 51 | Ruth Stephens | 40 | wife | — | Sweden |
| 52 | Dolores Stephens | 18 | daughter | — | Illinois |
| 53 | Florence Stephens | 16 | daughter | — | Illinois |
| 54 | Joseph Bleull | 57 | head | Farmer | Illinois |
| 55 | Margaret Bleull | 56 | wife | — | Illinois |
| 56 | Bertha Bleull | 23 | daughter | Maid | Illinois |
| 57 | Clarence Bleull | 28 | son | Farm Hand | Illinois |
| 58 | Mary Bleull | 26 | daughter in law | — | Illinois |
| 59 | Robert Bleull | 1 | grandson | — | Illinois |
| 60 | Fred W. Clarence | 57 | head | Farmer | Illinois |
| 61 | Blanche Clarence | 45 | wife | — | Illinois |
| 62 | Frances Clarence | 12 | daughter | — | Illinois |
| 63 | Betty Lou Clarence | 10 | daughter | — | Illinois |
| 64 | Fred Jr. Clarence | 9 | son | — | Illinois |
| 65 | Frank A. Johnson | 69 | head | Farmer | Sweden |
| 66 | M. Josephine Johnson | 59 | wife | — | Illinois |
| 67 | Mabel Johnson | 35 | daughter | — | Illinois |
| 68 | Louis Johnson THIS PERSON | 25 | son | Farmer | Illinois |
| 69 | Richard Johnson | 20 | son | Farmer | Illinois |
| 70 | Arnold Steffens | 65 | head | Farmer | Germany |
| 71 | Anna Steffens | 59 | wife | — | Germany |
| 72 | Fanny Steffens | 39 | daughter | — | Illinois |
| 73 | Matilda Steffens | 26 | daughter | — | Illinois |
| 74 | Grant Steffens | 20 | son | Farm Help | Illinois |
| 75 | Irene Steffens | 18 | daughter | — | Illinois |
| 76 | Ilene Steffens | 18 | daughter | — | Illinois |
| 77 | Otto Krueger | 43 | head | Farmer | Illinois |
| 78 | Minnie Krueger | 47 | wife | — | Illinois |
| 79 | Annetta Krueger | 15 | daughter | — | Illinois |
| 80 | William Haws | 19 | Hired Man | Farm Hand | Illinois |
Pedigree Summary
Louis + 2 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)