LJ
Leo Johnson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Leo Johnson across the 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1913), then head of a 8-person household.
Age 17
b. ~1913
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Johnson |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1913 |
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 1930 census.
| Name | Relation to head | Relative to Leo | Age | Birth yr |
|---|---|---|---|---|
| Joseph Curran | Other | — | 2 | ~1928 |
| Alice Johnson | Daughter | — | 23 | ~1907 |
| George Johnson | Son | — | 21 | ~1909 |
| Mary Johnson | Other | — | 50 | ~1880 |
| Joseph Johnson | Head | — | 54 | ~1876 |
| Mary Johnson | Daughter | — | 24 | ~1906 |
| Ethel Johnson | Daughter | — | 19 | ~1911 |
| Leo Johnson | Son | — | 17 | ~1913 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 17
Suffolk, Massachusetts · implied b. ~1913 — 8 household members
| Surname | Johnson |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 27
Suffolk-County, Massachusetts · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leonard G |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Buffer |
| Industry | retail jewelry store |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1144 |
| Highest Grade | No H-3 |
| 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 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 · 1930 · age 17 · b. ~1913 · Massachusetts
★ You are viewing this record
Sibling
Alice Johnson
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Johnson
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Johnson
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Johnson
Sibling · 1930 · age 21
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 — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel955:0607)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael Saunders | 81 | Head | Retired | Irish Free State |
| 2 | Susan J Saunders | 70 | Wife-H | — | Northern Ireland |
| 3 | Margaret A Saunders | 34 | Daughter | Dressmaker | Massachusetts |
| 4 | Ray Sidney | 33 | Head | Operator | Lithuania |
| 5 | Anna Sidney | 22 | Wife-H | — | Lithuania |
| 6 | Edward Sidney | 3 | Son | — | New York |
| 7 | Ruth Sidney | 1 | Daughter | — | Massachusetts |
| 8 | Joseph B Johnson | 54 | Head | Mailer | Massachusetts |
| 9 | Mary E Johnson | 50 | Wife-H | — | Massachusetts |
| 10 | Mary E Johnson | 24 | Daughter | Stenographer | Massachusetts |
| 11 | Alice E Johnson | 23 | Daughter | Clerk | Massachusetts |
| 12 | George F Jr Johnson | 21 | Son | Messenger | Massachusetts |
| 13 | Ethel V Johnson | 19 | Daughter | — | Massachusetts |
| 14 | Leo Johnson THIS PERSON | 17 | Son | — | Massachusetts |
| 15 | Joseph V Curran | 2 | Nephew | — | Massachusetts |
| 16 | Samuel Bonino | 36 | Head | Electrician | Italy |
| 17 | Josephine Bonino | 30 | Wife-H | — | Massachusetts |
| 18 | Helena Bonino | 12 | Daughter | — | Massachusetts |
| 19 | Joseph Bonino | 9 | Son | — | Massachusetts |
| 20 | Elizabeth Bonino | 7 | Daughter | — | Massachusetts |
| 21 | William Bonino | 4 | Son | — | Massachusetts |
| 22 | Frank Bonino | 24 | Brother | Carpenter | Massachusetts |
| 23 | Davis Wright | 35 | Head | Superintendent | Canada English |
| 24 | Joseph Wright | 9 | Son | — | Canada English |
| 25 | Eliza Wright | 57 | Mother | — | Canada English |
| 26 | James Mohan | 61 | Head | Cutter | Massachusetts |
| 27 | Catherine Mohan | 57 | Wife-H | — | Massachusetts |
| 28 | Margaret L Mohan | 20 | Daughter | — | Massachusetts |
| 29 | James R Mohan | 18 | Son | Engraving | Massachusetts |
| 30 | Joseph W Mohan | 14 | Son | — | Massachusetts |
| 31 | George Weckesser | 51 | Head | Repairer | Germany |
| 32 | Gertrude Weckesser | 50 | Wife-H | — | Germany |
| 33 | Gertrude E Weckesser | 24 | Daughter | Teacher | Massachusetts |
| 34 | Helen R Weckesser | 19 | Daughter | — | Massachusetts |
| 35 | Francis Weckesser | 17 | Son | — | Massachusetts |
| 36 | Joseph Donahue | 18 | Step-son | — | Massachusetts |
| 37 | Mary E Balzer | 76 | Head | — | Germany |
| 38 | Enrico Salerno | 46 | Head | Store Keeper | Italy |
| 39 | Angeline Salerno | 38 | Wife-H | — | Massachusetts |
| 40 | Mary E Salerno | 16 | Daughter | — | Massachusetts |
| 41 | Anthony Salerno | 14 | Son | — | Massachusetts |
| 42 | Jacqueline S Salerno | 12 | Daughter | — | Massachusetts |
| 43 | Eleanor M Salerno | 9 | Daughter | — | Massachusetts |
| 44 | Richard P Salerno | 7 | Son | — | Massachusetts |
| 45 | Florence Salerno | 5 | Daughter | — | Massachusetts |
| 46 | Gloria A Salerno | 2 | Daughter | — | Massachusetts |
| 47 | Sarafina Dominico | 66 | Mother-in-law | — | Italy |
| 48 | Rocco Zoppo | 36 | Head | Sewer Work | Italy |
| 49 | Elizabeth Zoppo | 22 | Wife-H | — | Italy |
| 50 | William Zoppo | 4 | Son | — | Massachusetts |
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)