LJ
Leonard Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Kane, Illinois
Our Model Tree links this Leonard Johnson across the 1910, 1920 and 1930 US Censuses in Kane, Illinois (XGBoost, ~Confirmed), with identified parents David & Otto — first a son (b.~1905), then head of a 4-person household.
Age 25
b. ~1905
Male
Son
Born: Wisconsin
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Kane, Illinois |
| Surname | Johnson |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Additional Details | |
| Occupation | Loco Fireman |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Loco Fireman |
| Township / Ward | Aurora City |
| Est. Birth Year | ~1905 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Leonard | Age | Birth yr |
|---|---|---|---|---|
| Otto Miller | Head | — | 70 | ~1860 |
| Frank Miller | Son | — | 26 | ~1904 |
| Leonard Johnson | Son | — | 25 | ~1905 |
| Mary Miller | Spouse | — | 68 | ~1862 |
Census Appearances
1910
Kane, Illinois
Son, age 5
Kane, Illinois · implied b. ~1905 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Nor Norwegian |
| Mother's Birthplace | Nor Norwegian |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1920
Kane, Illinois
Son, age 14
Kane, Illinois · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leonard |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Kane, Illinois
Son, age 25
Kane, Illinois · implied b. ~1905 — 4 household members
| Surname | Johnson |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Loco Fireman |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Leonard Johnson across 3 US Census years (1910, 1920 and 1930) in Kane, Illinois, using XGBoost record linkage. Identified parents: father David Johnson (~0.92 confidence) and father Otto Miller (~0.92 confidence) and mother Mary Miller (~0.92 confidence) and mother Sarah Johnson (~0.92 confidence) and mother Sarah Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Johnson
b. ~1859
Source father
● Household
· direct · ~0.92
Father
Otto Miller
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Mary Miller
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Sarah Johnson
b. ~1864
Source mother
● Household
· direct · ~0.92
Mother
Sarah Johnson
b. ~1865
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Leonard Johnson
Son · 1930 · age 25 · b. ~1905 · Illinois
★ You are viewing this record
Sibling
Frank Miller
Sibling · 1930 · age 26
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
1930 US Federal Census — Kane, Illinois
Open full size
1930 US Federal Census — Kane, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel524:0163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John C Logan | 38 | Roomer | Labor | Missouri |
| 52 | Bernard Haffner | 45 | Head | Lith Hand | Germany |
| 53 | Marie Haffner | 30 | Wife | — | Iowa |
| 54 | Anna Keilin | 64 | Head | — | Illinois |
| 55 | Otto Miller | 70 | Head | — | Germany |
| 56 | Mary Miller | 68 | Wife | — | France |
| 57 | Frank H Miller | 26 | Son | — | Illinois |
| 58 | Leonard Johnson THIS PERSON | 25 | Son | Loco Fireman | Wisconsin |
| 59 | Angeline Modoff | 71 | Head | — | Luxemburg |
| 60 | Barbara Modoff | 38 | Daughter | Saleslady | Illinois |
| 61 | Harold Nelson | 27 | Head | Draftsman | Illinois |
| 62 | Ella Nelson | 24 | Wife | — | Illinois |
| 63 | John N Wagner | 58 | Head | Contractor | Illinois |
| 64 | Russell P Wagner | 16 | Son | — | Illinois |
| 65 | Andrew M Knauf | 36 | Son-in-law | Sheet Metal Worker | Illinois |
| 66 | Alma Knauf | 35 | Daughter | — | Illinois |
| 67 | Arthur W Moore | 28 | Head | Driver | Illinois |
| 68 | Mary Moore | 28 | Wife | Bookkeeper | Illinois |
| 69 | Fred A Johnson | 41 | Roomer | — | Iowa |
| 70 | Chris E Hintz | 38 | Head | Spray Painter | Illinois |
| 71 | Catherine Hintz | 35 | Wife | Music Teacher | Illinois |
| 72 | Eveline Hintz | 8 | Daughter | — | Illinois |
| 73 | John C Hintz | 7 | Son | — | Illinois |
| 74 | Fred A Martin | 54 | Head | Stationary Engineer | Illinois |
| 75 | Elizabeth Martin | 50 | Wife | — | Illinois |
| 76 | Sophie Martin | 26 | Daughter | Operator | Illinois |
| 77 | Clarence Martin | 18 | Son | Drill Hand | Illinois |
| 78 | Catherine Martin | 16 | Daughter | — | Illinois |
| 79 | Ralph Martin | 13 | Son | — | Illinois |
| 80 | Agnes Martin | 56 | Sister | — | Illinois |
| 81 | Theo A Dahmer | 39 | Head | Fireman | Illinois |
| 82 | Anna Dahmer | 40 | Wife | — | Illinois |
| 83 | Ed G Dahmer | 14 | Son | — | Illinois |
| 84 | Marjorie Dahmer | 10 | Daughter | — | Illinois |
| 85 | Catherine Dahmer | 6 | Daughter | — | Illinois |
| 86 | Mary Phelan | 70 | Head | — | Illinois |
| 87 | Mamie Phelan | 46 | Daughter | — | Illinois |
| 88 | George M Thomas | 45 | Head | Salesman | Illinois |
| 89 | Christine Thomas | 40 | Wife | — | Illinois |
| 90 | Gwendolyn Thomas | 14 | Daughter | — | Illinois |
| 91 | George W Thomas | 3 | Son | — | Illinois |
| 92 | John J Denton | 67 | Head | Foreman (Section) | Illinois |
| 93 | Anna Denton | 61 | Wife | — | Illinois |
| 94 | James E Denton | 38 | Son | Car Repairer | Illinois |
| 95 | Agnes Denton | 30 | Daughter | Clerk | Illinois |
| 96 | Jennie Corbin | 58 | Head | — | Illinois |
| 97 | Pearl Corbin | 28 | Daughter | Homework | Illinois |
| 98 | John D Heilig | 38 | Head | Clerk | Illinois |
| 99 | Evelyn Heilig | 37 | Wife | — | Illinois |
| 100 | Sadie Mclaughlin | 44 | Roomer | — | U.S. |
Pedigree Summary
Leonard + 1 sibling
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 1930 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)