LJ
Leonard Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Hennepin, Minnesota
Our Model Tree links this Leonard Johnson across the 1910, 1920 and 1930 US Censuses in Hennepin, Minnesota (XGBoost, ~Confirmed), with identified parents Karl & Carl — first a son (b.~1908), then head of a 5-person household.
Age 22
b. ~1908
Male
Son
Born: Minnesota
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Hennepin, Minnesota |
| Surname | Johnson |
| Given Name | Leonard E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Occupation | Clerk |
| Industry | Iron Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Clerk |
| Township / Ward | Minneapolis City |
| Est. Birth Year | ~1908 |
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 1930 census.
| Name | Relation to head | Relative to Leonard | Age | Birth yr |
|---|---|---|---|---|
| Karl Johnson | Head | — | 49 | ~1881 |
| Werner Johnson | Son | — | 15 | ~1915 |
| Leonard Johnson | Son | — | 22 | ~1908 |
| Walter Johnson | Son | — | 18 | ~1912 |
| Selma Johnson | Spouse | — | 48 | ~1882 |
Census Appearances
1910
Hennepin, Minnesota
Son, age 2
Hennepin, Minnesota · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leonard A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Hennepin, Minnesota
Son, age 12
Hennepin, Minnesota · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leonard B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | News Boy |
| Industry | City |
| Class of Worker | Own |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Hennepin, Minnesota
Son, age 22
Hennepin, Minnesota · implied b. ~1908 — 5 household members
| Surname | Johnson |
| Given Name | Leonard E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Clerk |
| Industry | Iron Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Hennepin, Minnesota, using XGBoost record linkage. Identified parents: father Karl Johnson (~0.92 confidence) and father Carl Johnson (~0.92 confidence) and mother Helma Johnson (~0.92 confidence) and mother Selma Johnson (~0.92 confidence) and mother Anna Johnson (~0.92 confidence) and father John Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Karl Johnson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Carl Johnson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Helma Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Selma Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Anna Johnson
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
John Johnson
b. ~1883
Source father
● Household
· direct · ~0.92
This person
Anchor record
Leonard Johnson
Son · 1930 · age 22 · b. ~1908 · Minnesota
★ You are viewing this record
Sibling
Walter Johnson
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Werner Johnson
Sibling · 1930 · age 15
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 — Hennepin, Minnesota
Open full size
1930 US Federal Census — Hennepin, Minnesota
Page Contents
44 people indexed on this census page (ia:1930:minnesotacensus00reel1089:0073)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Barrie Swanson | 78 | Head | — | Sweden |
| 2 | Joseph K. Swanson | 43 | Head | Carman | Poland |
| 3 | Helen Swanson | 41 | Wife | — | Poland |
| 4 | Walter Swanson | 16 | Son | Laborer | Minnesota |
| 5 | Stanley Swanson | 15 | Son | — | Minnesota |
| 6 | Mary Swanson | 13 | Daughter | — | Minnesota |
| 7 | Carl Swanson | 11 | Son | — | Minnesota |
| 8 | Mike Swanson | 8 | Son | — | Minnesota |
| 9 | Helen Swanson | 5 | Daughter | — | Minnesota |
| 10 | Jacob Scheffel | 61 | Head | Fireman | Minnesota |
| 11 | Emma N. Scheffel | 51 | Wife | — | Minnesota |
| 12 | Dorothy Scheffel | 25 | Son | Salesman | Minnesota |
| 13 | Louis Bauer | 31 | Head | Machinist | Minnesota |
| 14 | Frances E. Bauer | 34 | Sister | Power Machine | Minnesota |
| 15 | Rose Bauer | 29 | Sister | Assembler | Minnesota |
| 16 | Louise A. Bauer | 21 | Sister | — | Minnesota |
| 17 | Mike Marciniak | 40 | Head | Laborer | Poland |
| 18 | Nellie Marciniak | 38 | Wife | — | Poland |
| 19 | Peter Marciniak | 13 | Son | — | Minnesota |
| 20 | Frances Marciniak | 12 | Daughter | — | Minnesota |
| 21 | Rosie Marciniak | 10 | Daughter | — | Minnesota |
| 22 | Walter Marciniak | 5 | Son | — | Minnesota |
| 23 | Edward Marciniak | 3 | Son | — | Minnesota |
| 24 | Frank Kaikula | 40 | Head | Commercial Truck | Poland |
| 25 | Josephine Kaikula | 42 | Wife | — | Poland |
| 26 | Florence E. Kaikula | 17 | Daughter | — | Minnesota |
| 27 | Geneva A. Kaikula | 15 | Daughter | — | Minnesota |
| 28 | Karl G. Johnson | 49 | Head | Fireman | Sweden |
| 29 | Selma E. Johnson | 48 | Wife | — | Sweden |
| 30 | Leonard E. Johnson THIS PERSON | 22 | Son | Clerk | Minnesota |
| 31 | Walter B. Johnson | 18 | Son | Service Man | Minnesota |
| 32 | Werner J. Johnson | 15 | Son | — | Minnesota |
| 33 | John M. Majchrowicz | 45 | Head | Laborer | Poland |
| 34 | Nellie Majchrowicz | 40 | Wife | — | Poland |
| 35 | Josephine Majchrowicz | 17 | Son | — | Minnesota |
| 36 | Anna V. Majchrowicz | 15 | Daughter | — | Minnesota |
| 37 | Angeline Majchrowicz | 5 | Daughter | — | Minnesota |
| 38 | Sophie Majchrowicz | 1 | Daughter | — | Minnesota |
| 39 | Henry D. Crosby | 33 | Head | Proprietor | Minnesota |
| 40 | Isabel Crosby | 23 | Wife | — | Poland |
| 41 | Stella R. Crosby | 10 | Daughter | — | Minnesota |
| 42 | Irene Crosby | 8 | Daughter | — | Minnesota |
| 43 | Gladys Crosby | 7 | Daughter | — | Minnesota |
| 44 | Frank G. Schultz | 20 | Boarder | Finisher | Minnesota |
Pedigree Summary
Leonard + 2 siblings
Gen 1 · 6 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)