LJ
Leonard Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Worcester-County, Massachusetts
Our Model Tree links this Leonard Johnson across the 1920, 1930 and 1940 US Censuses in Worcester-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Mathilda & Oscar — first a head (b.~1898), then head of a 5-person household.
Age 42
b. ~1898
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Worcester-County, Massachusetts |
| Surname | Johnson |
| Given Name | Leonard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Additional Details | |
| Occupation | Stationary Engineer |
| Industry | Ice House |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1600 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stationary Engineer |
| Township / Ward | Worcester City |
| Est. Birth Year | ~1898 |
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 Leonard | Age | Birth yr |
|---|---|---|---|---|
| Helen Johnson | Daughter | — | 14 | ~1926 |
| Leonard Johnson | Head | — | 42 | ~1898 |
| Olga Norberg | Other | — | 28 | ~1912 |
| Leonard Johnson | Son | — | 12 | ~1928 |
| Nora Johnson | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Worcester, Massachusetts
Son, age 22
Worcester, Massachusetts · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leonard J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Clerk |
| Industry | Leather Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Worcester, Massachusetts
Head, age 32
Worcester, Massachusetts · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leonard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 24 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Fitter |
| Industry | Refrigerator |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 30 |
| Home Value / Rent | R |
| Veteran | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Worcester-County, Massachusetts
Head, age 42
Worcester-County, Massachusetts · implied b. ~1898 — 5 household members
| Surname | Johnson |
| Given Name | Leonard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Occupation | Stationary Engineer |
| Industry | Ice House |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1600 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mathilda Johnson (~0.92 confidence) and father Oscar Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mathilda Johnson
b. ~1862
Source mother
● Household
· direct · ~0.92
Father
Oscar Johnson
b. ~1871
Source father
● Household
· direct · ~0.92
This person
Anchor record
Leonard Johnson
Head · 1940 · age 42 · b. ~1898 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Worcester-County, Massachusetts
Open full size
1940 US Federal Census — Worcester-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01712-00382)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles W Lakin | 36 | Head | Machinist | Mass |
| 2 | Norah Lakin | 37 | Wife | — | Ohio |
| 3 | Ernest Sullivan | 21 | Head | Press Operator | Mass |
| 4 | Gerda Sullivan | 20 | Wife | — | Sweden |
| 5 | William Enman | 61 | Head | Chauffeur | Prince Ed Is |
| 6 | Louis Enman | 46 | Wife | — | R. I. |
| 7 | Frank Becker | 34 | Head | Machine Opr. | Mass |
| 8 | Alice Becker | 29 | Wife | — | Mass |
| 9 | Paul Becker | 5 | Son | — | Mass |
| 10 | Jean Becker | 3 | Daughter | — | Mass |
| 11 | George Largey | 40 | Head | Retail Clerk | Mass |
| 12 | Mary Largey | 35 | Wife | Envelope Opr. | Mass |
| 13 | Harry Allen | 79 | Head | Retired | Nova Scotia |
| 14 | Susie M. Allen | 72 | Wife | — | Mass |
| 15 | Durward Allen | 25 | Grandson | Office Clerk | Mass |
| 16 | Joseph Kot | 43 | Head | Color Mixer | Poland |
| 17 | Josephine Kot | 42 | Wife | — | Poland |
| 18 | Andrew Kot | 20 | Son | — | New York |
| 19 | Dorothy Kot | 12 | Daughter | — | New York |
| 20 | Kenneth Rogers | 25 | Head | Machinist | Mass |
| 21 | Anna L Rogers | 25 | Wife | — | New Hamp |
| 22 | Peter Savko | 44 | Head | Factory Clerk | Mass |
| 23 | Winifred Savko | 42 | Wife | — | England |
| 24 | Peter, Jr Savko | 14 | Son | — | Mass |
| 25 | Francis Savko | 11 | Son | — | Mass |
| 26 | Leonard Johnson THIS PERSON | 42 | Head | Stationary Engineer | Massachusetts |
| 27 | Nora Johnson | 39 | Wife | — | Massachusetts |
| 28 | Helen Johnson | 14 | Daughter | — | Massachusetts |
| 29 | Leonard Jr Johnson | 12 | Son | — | Massachusetts |
| 30 | Olga Norberg | 28 | Lodger | Waitress | Massachusetts |
| 31 | Clarence Medine | 42 | Head | Packer | Massachusetts |
| 32 | Ebba B Medine | 38 | Wife | — | Sweden |
| 33 | Beverley Medine | 13 | Daughter | — | Massachusetts |
| 34 | Ralph E. Balcom | 48 | Head | Rate Time Setter | Mass |
| 35 | Betsy Balcom | 45 | Wife | — | Mass |
| 36 | Vivian Balcom | 21 | Daughter | — | Mass |
| 37 | Marcia Balcom | 19 | Daughter | — | Mass |
| 38 | Edward Reynolds | 39 | Head | Fireman | Mass |
| 39 | Evelyn Reynolds | 34 | Wife | — | Mass |
| 40 | Mary Zionovan | 76 | Mother of wife | — | Ireland |
Pedigree Summary
Leonard
Gen 1 · 2 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)