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John Eaton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Eaton across the 1910, 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Thomas & Addie — first a son (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Eaton |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Clerk |
| Industry | Postal Dept |
| Class of Worker | GW |
| Income (1939) | 2100 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Boston |
| Est. Birth Year | ~1905 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Beatrice Eaton | Daughter | — | 37 | ~1903 |
| John Eaton | Son | — | 35 | ~1905 |
| Mary Eaton | Head | — | 70 | ~1870 |
Census Appearances
1910
Suffolk, Massachusetts
Son, age 6
Suffolk, Massachusetts · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Eaton |
| Given Name | John A Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Suffolk, Massachusetts
Son, age 15
Suffolk, Massachusetts · implied b. ~1905 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Eaton |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 25
Suffolk, Massachusetts · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Eaton |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Asst. Clerk |
| Industry | U.S.P.O. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 35
Suffolk-County, Massachusetts · implied b. ~1905 — 3 household members
| Surname | Eaton |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Clerk |
| Industry | Postal Dept |
| Class of Worker | GW |
| Income (1939) | 2100 |
| Highest Grade | C-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 Eaton across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Eaton (~0.92 confidence) and mother Addie Eaton (~0.92 confidence) and mother Mary Eaton (~0.92 confidence) and mother Mary Eaton (~0.92 confidence) and father John Eaton (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Eaton
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Addie Eaton
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Mary Eaton
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Mary Eaton
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
John Eaton
b. ~1874
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Eaton
Son · 1940 · age 35 · b. ~1905 · Massachusetts
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Sibling
Beatrice Eaton
Sibling · 1940 · age 37
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 — 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-t0627-01674-00011)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marguerite O'Hara | 67 | Head | — | Massachusetts |
| 42 | Agnes R. O'Hara | 52 | Step-daughter | Clerk Typist | Massachusetts |
| 43 | John J. Cassidy | 55 | Head | Postal Clerk | Massachusetts |
| 44 | Catherine M. Cassidy | 44 | Wife | — | Massachusetts |
| 45 | John Jr. Cassidy | 10 | Son | — | Massachusetts |
| 46 | Richard H. Stanley | 35 | Head | Asst Manager | Massachusetts |
| 47 | Lillian Stanley | 30 | Wife | Secretary | Massachusetts |
| 48 | Harriet R. Stanley | 60 | Daughter | — | Massachusetts |
| 49 | Richard Stanley | 59 | Head | Garage Owner | England |
| 50 | James Ralph A. Stanley | 53 | Lodger | — | Massachusetts |
| 51 | James E. Hickey | 62 | Head | Salesman | Massachusetts |
| 52 | Julia E. Hickey | 61 | Wife | — | Massachusetts |
| 53 | Anna A. Walsh | 65 | Head | — | Massachusetts |
| 54 | John H. Walsh | 52 | Brother | — | Massachusetts |
| 55 | Mary C. Riley | 50 | Sister | Saleswoman | Massachusetts |
| 56 | John J. Riley | 27 | Nephew | Organist | Massachusetts |
| 57 | Eugene H. Mccarthy | 33 | Head | Teacher | Massachusetts |
| 58 | Marjorie M. Mccarthy | 35 | Wife | — | Massachusetts |
| 59 | Eugene H. Jr. Mccarthy | 5 | Son | — | Massachusetts |
| 60 | Marjorie A. Mccarthy | 3 | Daughter | — | Massachusetts |
| 61 | Francis A. Mccarthy | 1 | Son | — | Massachusetts |
| 62 | Sarah M. O'Brien | 60 | Head | — | Ireland |
| 63 | Agnes Mcconville | 37 | Lodger | — | Canada |
| 64 | Mary Degagee | 27 | Lodger | Registered Nurse | Massachusetts |
| 65 | Mary J. Eaton | 70 | Head | — | Massachusetts |
| 66 | Beatrice P. Eaton | 37 | Daughter | School Teacher | Massachusetts |
| 67 | John A. Eaton THIS PERSON | 35 | Son | Clerk | Massachusetts |
| 68 | James A. Densmore | 69 | Head | — | Canada |
| 69 | Elizabeth Densmore | 68 | Wife | — | Newfoundland |
| 70 | Frederick A. Densmore | 41 | Son | Printer | Massachusetts |
| 71 | Walter R. Densmore | 39 | Son | Clerk-Typist | Massachusetts |
| 72 | Charles E. Densmore | 34 | Son | Checker | Massachusetts |
| 73 | James A. Densmore | 26 | Son | Salesman | Massachusetts |
| 74 | Thomas J. Smith | 47 | Head | Salesman | Massachusetts |
| 75 | Gertrude E. Smith | 46 | Wife | — | Massachusetts |
| 76 | Helen P. Smith | 26 | Daughter | Saleswoman | Massachusetts |
| 77 | Mary Smith | 19 | Daughter | Packer | Massachusetts |
| 78 | Gertrude Smith | 18 | Daughter | — | Massachusetts |
| 79 | Phyllis Smith | 16 | Daughter | — | Massachusetts |
| 80 | Thomas J. Jr. Smith | 14 | Son | — | Massachusetts |
Pedigree Summary
John + 1 sibling
Gen 1 · 5 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)