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John Mcdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Mcdonald across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 3-person household.
Age 63
b. ~1877
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | West Townsend |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Stone Cutter |
| Industry | Quarry |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 700 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Stone Cutter |
| Township / Ward | West Townsend |
| Est. Birth Year | ~1877 |
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 |
|---|---|---|---|---|
| John Mcdonald | Head | — | 63 | ~1877 |
| John Mcdonald | Son | — | 27 | ~1913 |
| Mary Mcdonald | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Hampshire, Massachusetts
Head, age 42
Hampshire, Massachusetts · implied b. ~1878 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | College |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Year of Naturalization | 1914 |
| Birthplace (normalized) | scotland |
Head, age 53
Middlesex, Massachusetts · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Granite Cutter |
| Industry | Granite Quarry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Radio Set | Yes |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Middlesex-County, Massachusetts
Head, age 63
Middlesex-County, Massachusetts · implied b. ~1877 — 3 household members
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | West Townsend |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Occupation | Stone Cutter |
| Industry | Quarry |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 700 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| 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 Mcdonald across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcdonald
Head · 1940 · age 63 · b. ~1877 · 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
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1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01618-00212)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elwin Shepherd | 26 | Head | Roadwork | Massachusetts |
| 42 | Elsie Shepherd | 27 | Wife | — | Massachusetts |
| 43 | Elwin Jr. Shepherd | 4 | Son | — | Massachusetts |
| 44 | Virginia Shepherd | 2 | Daughter | — | Massachusetts |
| 45 | Tiffany Weaver | 55 | Head | — | Maine |
| 46 | Ida Weaver | 54 | Wife | — | Massachusetts |
| 47 | Stephen Day | 58 | Head | — | Vermont |
| 48 | Lottie Day | 57 | Wife | — | Massachusetts |
| 49 | Lucie Warren | 53 | Head | Housework | Canada |
| 50 | Earle Warren | 25 | Son | Printer | Massachusetts |
| 51 | Hazel Warren | 27 | Daughter | Maid | Massachusetts |
| 52 | Ethel Donley | 55 | Head | — | New Hampshire |
| 53 | Andrew Sleeper | 72 | Head | — | New Hampshire |
| 54 | Floris Sleeper | 48 | Wife | — | New Hampshire |
| 55 | Helen Elliott | 20 | Daughter | Secretary | New Hampshire |
| 56 | Clara Spofford | 59 | Boarder | — | Massachusetts |
| 57 | Lettie Webster | 79 | Boarder | — | Massachusetts |
| 58 | Carrie Cady | 75 | Boarder | Inspector | Massachusetts |
| 59 | Lucy Spinhay | 15 | Boarder | — | Massachusetts |
| 60 | Ethel Welch | 55 | Head | — | Massachusetts |
| 61 | Lawrence C. Welch | 34 | Son | Janitor | Massachusetts |
| 62 | John Mcdonald THIS PERSON | 63 | Head | Stone Cutter | Scotland |
| 63 | Mary Mcdonald | 62 | Wife | — | Scotland |
| 64 | John Mcdonald | 27 | Son | Stone Mason | Scotland |
| 65 | Ada E. Clark | 58 | Head | — | Massachusetts |
| 66 | Alora Hathaway | 61 | Head | — | New Hampshire |
| 67 | Sarah Lawton | 63 | Sister | — | Canada |
| 68 | Annie Parker | 61 | Head | — | Finland |
| 69 | Edward Elliott | 34 | Head | Contractor | New Hampshire |
| 70 | Rose Elliott | 33 | Wife | Housework | Massachusetts |
| 71 | Edward Elliott | 14 | Son | — | Massachusetts |
| 72 | Alexander Aro | 55 | Head | Poultry | Finland |
| 73 | George Aro | 22 | Son | Poultry | Vermont |
| 74 | Aili Aro | 19 | Daughter | — | Massachusetts |
| 75 | Frank Harmon | 57 | Boarder | Poultry | Finland |
| 76 | Mary Harmon | 51 | Boarder | — | Michigan |
| 77 | Fiori Sanel | 37 | Head | Cutter | Italy |
| 78 | Catherine Sanel | 32 | Wife | — | Concord |
| 79 | John Sanel | 11 | Son | — | Concord |
| 80 | Robert Sanel | 10 | Son | — | Concord |
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)