JT
James Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Thompson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 5-person household.
Age 75
b. ~1865
Male
Head
Born: Scotland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Thompson |
| Given Name | James |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Brighton |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Massachusetts |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Belmont Town |
| Est. Birth Year | ~1865 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Margaret Thompson | Daughter | — | 40 | ~1900 |
| James Thompson | Head | — | 75 | ~1865 |
| Ernestine Mcneil | Other | — | 39 | ~1901 |
| William Thompson | Son | — | 43 | ~1897 |
| Douglas Thompson | Son | — | 33 | ~1907 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 51
Middlesex, Massachusetts · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | James |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Year of Immigration | 1886 |
| Naturalization Status | Alien |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Chauffeur |
| Industry | Cotton Mill |
| 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
Other, age 64
Middlesex, Massachusetts · implied b. ~1866 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | James |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1888 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Master mechanic |
| Industry | Cotton mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Middlesex-County, Massachusetts
Head, age 75
Middlesex-County, Massachusetts · implied b. ~1865 — 5 household members
| Surname | Thompson |
| Given Name | James |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Brighton |
| Naturalization Status | Naturalized |
| Highest Grade | 6 |
| 1935 Residence | Massachusetts |
| 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 James Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Thompson
Head · 1940 · age 75 · b. ~1865 · Massachusetts
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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-t0627-01602-01016)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George B Dodge | 49 | head | Treasurer | Maine |
| 42 | Helen Dodge | 47 | wife | — | Massachusetts |
| 43 | Marion F Dodge | 21 | daughter | — | Massachusetts |
| 44 | Arnold J Dodge | 19 | son | Advertising Manager | Massachusetts |
| 45 | George B Jr. Dodge | 10 | son | — | Massachusetts |
| 46 | David F. Lee | 47 | head | Lawyer | Massachusetts |
| 47 | Estelle Lee | 42 | wife | — | Newfoundland |
| 48 | David Lee | 14 | son | — | Massachusetts |
| 49 | Constance Lee | 5 | daughter | — | Massachusetts |
| 50 | Edward M. Jenning | 36 | head | Advertising Salesman | Ohio |
| 51 | Mildred H. Jenning | 34 | wife | — | Ohio |
| 52 | Charles Jenning | 14 | son | — | Ohio |
| 53 | Judith Jenning | 5 | daughter | — | Massachusetts |
| 54 | George S. Mclaughin | 56 | head | Architect | Massachusetts |
| 55 | M. Beatrice Mclaughin | 49 | wife | — | Massachusetts |
| 56 | Marianna V. Mclaughin | 13 | daughter | — | Massachusetts |
| 57 | George S. Jr. Mclaughin | 12 | son | — | Massachusetts |
| 58 | James Thompson THIS PERSON | 75 | head | — | Scotland |
| 59 | William K Thompson | 43 | son | Branch Manager | Scotland |
| 60 | Margaret P. Thompson | 40 | daughter | Private Secretary | Scotland |
| 61 | Douglas Thompson | 33 | son | Clerk | Massachusetts |
| 62 | Ernestine Mcneil | 39 | Housekeeper | House-Keeper | English |
| 63 | Murray F. Gardner | 42 | head | Associate Professor | Michigan |
| 64 | Helen N. Gardner | 34 | wife | — | Illinois |
| 65 | Susanne S. Gardner | 5 | daughter | — | Massachusetts |
| 66 | Harry A. Smith | 46 | head | Factory Superintendent | Pennsylvania |
| 67 | Elizabeth Smith | 46 | wife | — | New York |
| 68 | Bertha Sillander | 55 | friend | — | Massachusetts |
| 69 | George M. Corsick | 47 | head | Plant Superintendent | Massachusetts |
| 70 | Irene H. Corsick | 52 | wife | — | Massachusetts |
| 71 | Irene M. Corsick | 17 | daughter | — | Massachusetts |
| 72 | E. Derby Child | 33 | head | Pilot | Massachusetts |
| 73 | Margaret Child | 32 | wife | — | Massachusetts |
| 74 | Richard Child | 4 | son | — | Massachusetts |
| 75 | Eleanor Child | 2 | daughter | — | Massachusetts |
| 76 | John Cavanagh | 68 | father-in-law | Watchman | Canada English |
| 77 | Margaret Cavanagh | 66 | mother-in-law | — | Canada English |
| 78 | Bernard Cavanagh | 41 | brother-in-law | Insurance Adjuster | Massachusetts |
| 79 | Hope Le Clair | 20 | maid | Maid | New Hampshire |
| 80 | Extra Line | None | — | — | — |
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)