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John Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hampden-County, Massachusetts
Our Model Tree links this John Smith across the 1920, 1930 and 1940 US Censuses in Hampden-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Frederick & Margaret — first a head (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hampden-County, Massachusetts |
| Surname | Smith |
| Given Name | John F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Hampden |
| Additional Details | |
| Occupation | Civil Engineer |
| Industry | Connecting Engineers |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1365 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Civil Engineer |
| Township / Ward | Springfield |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Smith | Head | — | 27 | ~1913 |
| Roger Smith | Son | — | 5 | ~1935 |
| Frederick Smith | Son | — | 4 | ~1936 |
| Lillian Smith | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Hampden, Massachusetts
Son, age 7
Hampden, Massachusetts · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | John F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Hampden, Massachusetts
Son, age 17
Hampden, Massachusetts · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | John F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Hampden-County, Massachusetts
Head, age 27
Hampden-County, Massachusetts · implied b. ~1913 — 4 household members
| Surname | Smith |
| Given Name | John F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Hampden |
| Occupation | Civil Engineer |
| Industry | Connecting Engineers |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1365 |
| Highest Grade | H-4 |
| 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 John Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frederick Smith (~0.92 confidence) and mother Margaret Smith (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frederick Smith
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Margaret Smith
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Smith
Head · 1940 · age 27 · b. ~1913 · 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 — Hampden-County, Massachusetts
Open full size
1940 US Federal Census — Hampden-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01711-00211)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David O Robinson | 16 | Son | — | Massachusetts |
| 2 | Robinson | None | — | — | — |
| 3 | John F Smith THIS PERSON | 27 | Head | Civil Engineer | Massachusetts |
| 4 | Lillian K Smith | 27 | Wife | — | New York |
| 5 | Roger Smith | 5 | Son | — | Massachusetts |
| 6 | Frederick Smith | 4 | Son | — | Massachusetts |
| 7 | James Graham | 71 | Head | — | Northern Ireland |
| 8 | Teresa A Graham | 61 | Wife | — | Vermont |
| 9 | Harriet Howard | 76 | Lodger | — | Massachusetts |
| 10 | John B Devereault | 39 | Head | Grinder | Vermont |
| 11 | Lottie E Devereault | 46 | Wife | — | Nova Scotia |
| 12 | Edward Devereault | 8 | Son | — | Massachusetts |
| 13 | Donald W King | 40 | Head | Fireman | Massachusetts |
| 14 | Marion King | 37 | Wife | — | Massachusetts |
| 15 | Shirley King | 12 | Daughter | — | Massachusetts |
| 16 | Virginia King | 11 | Daughter | — | Massachusetts |
| 17 | Henry T La Broad | 50 | Head | School Teacher | Massachusetts |
| 18 | Anna S La Broad | 42 | Wife | — | Rhode Island |
| 19 | William F La Broad | 24 | Son | Draughtsman | Massachusetts |
| 20 | Harry C La Broad | 22 | Son | Shipping Clerk | Connecticut |
| 21 | Robert T Coyle | 70 | Brother in law | — | Rhode Island |
| 22 | John A Kenney | 36 | Head | Manager Classified Adv. | Massachusetts |
| 23 | Margaret M Kenney | 31 | Wife | — | Massachusetts |
| 24 | James H Thiel | 55 | Head | School Teacher | Massachusetts |
| 25 | Thiel | 50 | Wife | — | Massachusetts |
| 26 | James Thiel | 21 | Son | — | Massachusetts |
| 27 | Thiel | 13 | Daughter | — | Massachusetts |
| 28 | Norman Harvey | 34 | Head | Route Salesman | Canada English |
| 29 | Stella Harvey | 30 | Wife | — | Massachusetts |
| 30 | Marilyn Harvey | 2 | Daughter | — | Massachusetts |
| 31 | Ruth Ann Harvey | 3 | Daughter | — | Massachusetts |
| 32 | George C Kleeman | 35 | Head | Advertising Salesman | Vermont |
| 33 | Beryl S Kleeman | 38 | Wife | — | England |
| 34 | Robert J Kleeman | 6 | Son | — | Massachusetts |
| 35 | James Kleeman | 1 | Son | — | Massachusetts |
| 36 | Peter B Kleeman | 1 | Son | — | Massachusetts |
| 37 | Luella M Kleeman | 63 | Mother | — | Vermont |
| 38 | Charles D Rathburn | 59 | Head | Operator | Massachusetts |
| 39 | Hazel S Rathburn | 39 | Wife | — | Massachusetts |
| 40 | Hazel Lorigan | 51 | Head | — | Massachusetts |
Pedigree Summary
John
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)