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John Cameron — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Cameron across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Canada English
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Cameron |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Canada English |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Am Cit |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Massachusetts |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
| Township / Ward | Billerica |
| Est. Birth Year | ~1928 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| James Cameron | Head | — | 45 | ~1895 |
| John Cameron | Son | — | 12 | ~1928 |
| Nina Cameron | Spouse | — | 47 | ~1893 |
| Eileen Cameron | Daughter | — | 9 | ~1931 |
| Irene Cameron | Daughter | — | 2 | ~1938 |
| Louise Cameron | Daughter | — | 6 | ~1934 |
| Jean Cameron | Daughter | — | 15 | ~1925 |
| James Cameron | Son | — | 3 | ~1937 |
| Graham Cameron | Son | — | 19 | ~1921 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 2
Middlesex, Massachusetts · implied b. ~1928 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cameron |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Canada English |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
1940
Middlesex-County, Massachusetts
Son, age 12
Middlesex-County, Massachusetts · implied b. ~1928 — 9 household members
| Surname | Cameron |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Canada English |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Am Cit |
| Highest Grade | No 6 |
| 1935 Residence | Massachusetts |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
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 Cameron across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cameron
Son · 1940 · age 12 · b. ~1928 · Massachusetts
★ You are viewing this record
Sibling
Louise Cameron
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Graham Cameron
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Cameron
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Cameron
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Cameron
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Cameron
Sibling · 1940 · age 15
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 — 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-t0627-01603-00517)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Francis H. Howard | 56 | Head | Staying | Massachusetts |
| 42 | Rita Howard | 30 | Wife | — | Massachusetts |
| 43 | John Toomoth | 68 | Head | Clerk | New York |
| 44 | Helena Toomoth | 64 | Wife | — | Ireland |
| 45 | John J. Curio | 28 | Son in law | Clerk | Massachusetts |
| 46 | Marguerite Curio | 27 | Daughter | — | Massachusetts |
| 47 | Nancy M. Curio | 1 | Granddaughter | — | Massachusetts |
| 48 | Charles G. Quinton | 33 | Head | Carpenter | Massachusetts |
| 49 | Emma V. Quinton | 37 | Wife | — | Canada English |
| 50 | Helen M. Quinton | 9 | Daughter | — | Massachusetts |
| 51 | James G. Gallagher | 63 | Son | — | Massachusetts |
| 52 | William Gallagher | 33 | Head | Chef | Massachusetts |
| 53 | Marcella Gallagher | 31 | Wife | — | Massachusetts |
| 54 | Dorothy Gallagher | 8 | Daughter | — | Massachusetts |
| 55 | James Gallagher | 6 | Son | — | Massachusetts |
| 56 | Alice Gallagher | 3 | Daughter | — | Massachusetts |
| 57 | Joseph Gallagher | 2 | Son | — | Massachusetts |
| 58 | Thomas Gallagher | 1 | Son | — | Massachusetts |
| 59 | Ann Kelley | 60 | Head | Seamstress | Massachusetts |
| 60 | William J. Sullivan | 59 | Head | Polisher | Massachusetts |
| 61 | Mary C. Sullivan | 49 | Sister | — | Massachusetts |
| 62 | Edward H. Grace | 31 | Head | Laborer | Massachusetts |
| 63 | Albina R. Grace | 30 | Wife | — | Massachusetts |
| 64 | Mary J. Grace | 6 | Daughter | — | Massachusetts |
| 65 | James J. Cameron | 45 | Head | Insulation Foreman | Canada English |
| 66 | Nina Cameron | 47 | Wife | — | Canada English |
| 67 | Graham Cameron | 19 | Son | Laborer | Canada English |
| 68 | Jean Cameron | 15 | Daughter | — | Canada English |
| 69 | John Cameron THIS PERSON | 12 | Son | — | Canada English |
| 70 | Eileen Cameron | 9 | Daughter | — | Massachusetts |
| 71 | Louise Cameron | 6 | Daughter | — | Massachusetts |
| 72 | James Cameron | 3 | Son | — | Massachusetts |
| 73 | Irene Cameron | 2 | Daughter | — | Massachusetts |
| 74 | William Rae | 57 | Head | Laborer | Missouri |
| 75 | Rose Rae | 50 | Wife | Housekeeper | England |
| 76 | Francis Rae | 15 | Daughter | — | Massachusetts |
| 77 | Dougald Macdougall | 40 | Head | Body Builder | Canada English |
| 78 | Mary Macdougall | 33 | Wife | — | Canada English |
| 79 | Stanislaus Macdougall | 14 | Son | — | Massachusetts |
| 80 | Dominick Flaherty | 58 | Head | Farming | Ireland |
Related Census Records
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)