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John Robertson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Robertson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Sarah — first a head (b.~1897), then head of a 6-person household.
Age 43
b. ~1897
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Robertson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Greenfield |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Sheet metal worker |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1944 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Sheet Metal Worker |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1897 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jean Robertson | Daughter | — | 5 | ~1935 |
| Hazel Robertson | Daughter | — | 1 | ~1939 |
| John Robertson | Head | — | 43 | ~1897 |
| Frank Robertson | Son | — | 3 | ~1937 |
| John Robertson | Son | — | 16 | ~1924 |
| Mildred Robertson | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 23
Middlesex, Massachusetts · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1908 |
| Naturalization Status | Alien |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Repair helper |
| Industry | B. R. Car Shops |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Middlesex, Massachusetts
Head, age 33
Middlesex, Massachusetts · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 23 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machinist |
| Industry | Car shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 22 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Middlesex-County, Massachusetts
Head, age 43
Middlesex-County, Massachusetts · implied b. ~1897 — 6 household members
| Surname | Robertson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Greenfield |
| Naturalization Status | Naturalized |
| Occupation | Sheet metal worker |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1944 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Robertson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Sarah Robertson (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Sarah Robertson
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Robertson
Head · 1940 · age 43 · b. ~1897 · 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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01693-00404)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carroll D. Spiller | 42 | Head | Dyeing | Maine |
| 2 | Elizabeth H. Spiller | 40 | Wife | — | Massachusetts |
| 3 | Irene H. Spiller | 15 | Daughter | — | Massachusetts |
| 4 | Robert D. Spiller | 14 | Son | — | Massachusetts |
| 5 | Willis J. Spiller | 6 | Son | — | Massachusetts |
| 6 | Ida Wilmont | 42 | Head | — | Massachusetts |
| 7 | Willard Wilmont | 22 | Son | New Worker | New Hampshire |
| 8 | Fred E. Pease | 66 | Head | — | Massachusetts |
| 9 | Eva F. Pease | 36 | Daughter | Boxer | Massachusetts |
| 10 | Louis C. Pease | 34 | Son | — | Massachusetts |
| 11 | Leona Pease | 31 | Daughter | Boxer | Massachusetts |
| 12 | Carl Pease | 24 | Son | — | Massachusetts |
| 13 | William J. Luther | 53 | Head | Mechanic | Massachusetts |
| 14 | Rose A. Luther | 44 | Wife | — | Massachusetts |
| 15 | William J. Jr. Luther | 23 | Son | — | Massachusetts |
| 16 | Richard Luther | 21 | Son | Bottler | Massachusetts |
| 17 | Charles L. Schoffield | 48 | Head | Machinist | Massachusetts |
| 18 | Annie Schoffield | 47 | Wife | — | Massachusetts |
| 19 | Fern M. Schoffield | 25 | Daughter | Operator | Maine |
| 20 | Ruth E. Schoffield | 23 | Daughter | Boxer | Massachusetts |
| 21 | Herbert L. Schoffield | 9 | Son | — | Massachusetts |
| 22 | William J. Pearsall | 39 | Head | Clerk | Massachusetts |
| 23 | Anna Pearsall | 27 | Sister | — | Massachusetts |
| 24 | William Pearsall | 11 | Son | — | Massachusetts |
| 25 | Elizabeth Pearsall | 9 | Daughter | — | Massachusetts |
| 26 | Paul Pearsall | 6 | Son | — | Massachusetts |
| 27 | John Robertson THIS PERSON | 43 | Head | Sheet Metal Worker | Scotland |
| 28 | Mildred D. Robertson | 28 | Wife | — | Massachusetts |
| 29 | John R. Robertson | 16 | Son | — | Massachusetts |
| 30 | Jean A. Robertson | 5 | Daughter | — | Massachusetts |
| 31 | Frank Robertson | 3 | Son | — | Massachusetts |
| 32 | Hazel Robertson | 1 | Daughter | — | Massachusetts |
| 33 | Wilfred E. Duckworth | 30 | Head | Sheet Metal Worker | Massachusetts |
| 34 | Viola Duckworth | 30 | Wife | — | Montana |
| 35 | Allan Duckworth | 1 | Son | — | Massachusetts |
| 36 | Charles Abbott | 66 | Head | Wood Turner | Massachusetts |
| 37 | Margaret Abbott | 67 | Wife | — | Massachusetts |
| 38 | John J. Sheen | 40 | Son-in-law | Clerk | Massachusetts |
| 39 | Gertrude Sheen | 36 | Daughter | — | Massachusetts |
| 40 | Henry L. Edson | 63 | Head | Locomotive Engineer | Vermont |
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)