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John Allen — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Allen across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Mary — first a son (b.~1915), then head of a 2-person household.
Age 25
b. ~1915
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Allen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Laborer |
| Industry | Housing Project |
| Class of Worker | GW |
| Hours Worked | 72 |
| Income (1939) | 600 |
| Highest Grade | G-8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Boston City |
| Est. Birth Year | ~1915 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Allen | Head | — | 55 | ~1885 |
| John Allen | Son | — | 25 | ~1915 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 4
Suffolk, Massachusetts · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | John A |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Other, age 15
Suffolk, Massachusetts · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | John A |
| Relationship to Head | Foster Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 25
Suffolk-County, Massachusetts · implied b. ~1915 — 2 household members
| Surname | Allen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Laborer |
| Industry | Housing Project |
| Class of Worker | GW |
| Hours Worked | 72 |
| Income (1939) | 600 |
| Highest Grade | G-8 |
| 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 Allen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Allen (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Allen
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Allen
Son · 1940 · age 25 · b. ~1915 · 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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01667-00700)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Davis | 39 | Head | Mechanic | Texas |
| 2 | Julia X Davis | 31 | Wife | — | Massachusetts |
| 3 | Edward Davis | 12 | Son | — | Massachusetts |
| 4 | Rose Marie Davis | 10 | Daughter | — | Massachusetts |
| 5 | Barbara Davis | 9 | Daughter | — | Massachusetts |
| 6 | Paul Davis | 7 | Son | — | Massachusetts |
| 7 | Harold Davis | 6 | Son | — | Massachusetts |
| 8 | Carol Davis | 3 | Daughter | — | Massachusetts |
| 9 | Robert Davis | 2 | Son | — | Massachusetts |
| 10 | Ellen X Gleason | 46 | Head | — | Massachusetts |
| 11 | Edward Gleason | 37 | Brother | Mechanic | Massachusetts |
| 12 | George Perkins | 51 | Head | Painter | Massachusetts |
| 13 | Edna X Perkins | 45 | Wife | — | Massachusetts |
| 14 | Francis Perkins | 20 | Son | Clerk | Massachusetts |
| 15 | George Marston | 45 | Head | Engineer | Massachusetts |
| 16 | Marie X Marston | 40 | Wife | Waitress | Massachusetts |
| 17 | Donnell Marston | 21 | Son-in-law | New Worker | Massachusetts |
| 18 | Elma X Marston | 20 | Daughter | Maid | Massachusetts |
| 19 | William X Hood | 58 | Head | Watchman | Massachusetts |
| 20 | James X Crehan | 55 | Head | Laborer | Ireland |
| 21 | Elizabeth Crehan | 25 | Daughter | — | Massachusetts |
| 22 | Martin Crehan | 21 | Son | Chauffeur | Massachusetts |
| 23 | Katherine Crehan | 20 | Daughter | Maid | Massachusetts |
| 24 | Nora Crehan | 19 | Daughter | New Worker | Massachusetts |
| 25 | John Linehan | 26 | Head | Laborer | Massachusetts |
| 26 | Grace X Linehan | 24 | Wife | — | Massachusetts |
| 27 | John Linehan | 5 | Son | — | Massachusetts |
| 28 | Robert Linehan | 2 | Son | — | Massachusetts |
| 29 | John Kreskala | 55 | Head | — | Russia |
| 30 | Elizabeth X Kreskala | 45 | Wife | — | Scotland |
| 31 | John Kreskala | 15 | Son | — | Massachusetts |
| 32 | James Kreskala | 14 | Son | — | Massachusetts |
| 33 | Mary Kreskala | 13 | Daughter | — | Massachusetts |
| 34 | Idella Kreskala | 12 | Daughter | — | Massachusetts |
| 35 | Mary X Mulhern | 70 | Head | — | Ireland |
| 36 | Hugh Mulhern | 40 | Son | Mechanic | Massachusetts |
| 37 | Joseph Wallace | 50 | Head | Painter | Massachusetts |
| 38 | Jessie X Wallace | 60 | Wife | — | Massachusetts |
| 39 | Mary X Allen | 55 | Head | — | Massachusetts |
| 40 | John Allen THIS PERSON | 25 | Son | Laborer | Massachusetts |
Pedigree Summary
John
Gen 1 · 1 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)