LJ
Leo Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Norfolk-County, Massachusetts
Our Model Tree links this Leo Johnson across the 1930 and 1940 US Censuses in Norfolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Norfolk-County, Massachusetts |
| Surname | Johnson |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Canton |
| 1935 Residence (County) | Norfolk |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Canton |
| Est. Birth Year | ~1930 |
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 Leo | Age | Birth yr |
|---|---|---|---|---|
| Anna Mccormick | Other | — | 26 | ~1914 |
| Rita Johnson | Daughter | — | 15 | ~1925 |
| Eveline Johnson | Daughter | — | 13 | ~1927 |
| Angelo Johnson | Head | — | 44 | ~1896 |
| Leo Johnson | Son | — | 10 | ~1930 |
| Mary Johnson | Daughter | — | 17 | ~1923 |
| Anna Johnson | Daughter | — | 18 | ~1922 |
| Rita Johnson | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Norfolk, Massachusetts
Son, age
Norfolk, Massachusetts · implied b. ~1930 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leonard L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Finland |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Norfolk-County, Massachusetts
Son, age 10
Norfolk-County, Massachusetts · implied b. ~1930 — 8 household members
| Surname | Johnson |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Canton |
| 1935 Residence (County) | Norfolk |
| Highest Grade | No 3 |
| 1935 Residence | Same House |
| 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 Leo Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leo Johnson
Son · 1940 · age 10 · b. ~1930 · Massachusetts
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Sibling
Anna Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eveline Johnson
Sibling · 1940 · age 13
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 — Norfolk-County, Massachusetts
Open full size
1940 US Federal Census — Norfolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01626-00541)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Noonan | 53 | Head | Seamstress | Massachusetts |
| 2 | Catherine Banks | 27 | Niece | Packer | Massachusetts |
| 3 | Phyllis Banks | 8 | Grandniece | — | Massachusetts |
| 4 | Roscoe Freeman | 42 | Head | Houseman | Massachusetts |
| 5 | Ruth Freeman | 36 | Wife | — | Massachusetts |
| 6 | Edmund Adams | 17 | Nephew | — | Massachusetts |
| 7 | John Hatcher | 57 | Head | — | Massachusetts |
| 8 | Katherine Hatcher | 58 | Wife | — | Massachusetts |
| 9 | John Jr. Hatcher | 25 | Son | Spinner | Massachusetts |
| 10 | Katherine Hatcher | 18 | Daughter | Retail Saleswoman | Massachusetts |
| 11 | Candido Berardi | 53 | Head | Laborer | Italy |
| 12 | Mary Berardi | 39 | Wife | — | Italy |
| 13 | Donato Berardi | 16 | Son | — | Massachusetts |
| 14 | Geno Berardi | 12 | Son | — | Massachusetts |
| 15 | Francis Berardi | 10 | Son | — | Massachusetts |
| 16 | Guilda Berardi | 9 | Daughter | — | Massachusetts |
| 17 | Richard Berardi | 7 | Son | — | Massachusetts |
| 18 | Joseph Berardi | 5 | Son | — | Massachusetts |
| 19 | Ann Berardi | 3 | Daughter | — | Massachusetts |
| 20 | Robert Berardi | 2 | Son | — | Massachusetts |
| 21 | Edward Berardi | 1 | Son | — | Massachusetts |
| 22 | Mary E. Crowley | 48 | Head | Waitress | Massachusetts |
| 23 | John F. Crowley | 43 | Brother | Laborer | Massachusetts |
| 24 | David J. Crowley | 36 | Brother | Short Order Cook | Massachusetts |
| 25 | Angelo Johnson | 44 | Head | Tailor | Bulgaria |
| 26 | Rita Johnson | 42 | Wife | — | Massachusetts |
| 27 | Anna Johnson | 18 | Daughter | Clerk | Massachusetts |
| 28 | Mary Johnson | 17 | Daughter | — | Massachusetts |
| 29 | Rita Johnson | 15 | Daughter | — | Massachusetts |
| 30 | Eveline Johnson | 13 | Daughter | — | Massachusetts |
| 31 | Leo Johnson THIS PERSON | 10 | Son | — | Massachusetts |
| 32 | Anna B. Mccormick | 26 | Sister-in-law | Rubber Worker | Massachusetts |
| 33 | Manuel Correira | 65 | Head | Fireman | Portugal |
| 34 | Mary Correira | 43 | Wife | — | Portugal |
| 35 | Helen Correira | 22 | Daughter | Rubber Worker | Massachusetts |
| 36 | Anthony Correira | 21 | Son | Laborer | Massachusetts |
| 37 | John Correira | 17 | Son | Delivery Man | Massachusetts |
| 38 | Charles Correira | 16 | Son | — | Massachusetts |
| 39 | James Correira | 15 | Son | — | Massachusetts |
| 40 | Jennie Correira | 14 | Daughter | — | Massachusetts |
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)