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Mary Macdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grafton-County, New Hampshire
Our Model Tree links this Mary Macdonald across the 1930 and 1940 US Censuses in Grafton-County, New Hampshire (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 6-person household.
Age 13
b. ~1927
Female
Daughter
Born: New Hampshire
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grafton-County, New Hampshire |
| Surname | MacDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | La Place |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | New Hampshire |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Township / Ward | Lincoln Town |
| Est. Birth Year | ~1927 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Geraldine Macdonald | Daughter | — | 18 | ~1922 |
| Donald Macdonald | Head | — | 42 | ~1898 |
| Helen Macdonald | Daughter | — | 16 | ~1924 |
| Albertine Wilson | Spouse | — | 32 | ~1908 |
| Mary Macdonald | Daughter | — | 13 | ~1927 |
| Kenneth Ainsley | Other | — | 33 | ~1907 |
Census Appearances
1930
Grafton, New …
Daughter, age 3
Grafton, New Hampshire · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Macdonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Newfoundland |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Grafton-County, New …
Daughter, age 13
Grafton-County, New Hampshire · implied b. ~1927 — 6 household members
| Surname | MacDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | La Place |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | New Hampshire |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 Mary Macdonald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Macdonald
Daughter · 1940 · age 13 · b. ~1927 · New Hampshire
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Sibling
Helen Macdonald
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Macdonald
Sibling · 1940 · age 18
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 — Grafton-County, New Hampshire
Open full size
1940 US Federal Census — Grafton-County, New Hampshire
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02287-00173)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Macdonald | 83 | Head | — | Canada English |
| 42 | Lucinda Macdonald | 50 | Daughter | Office Clerk | New Hampshire |
| 43 | Carl Schumberger | 34 | Head | Minister | Kansas |
| 44 | Elizabeth Schumberger | 33 | Wife | — | New Hampshire |
| 45 | Stephen Schumberger | 2 | Son | — | New Hampshire |
| 46 | William Theriault | 54 | Head | Car Repairer | Canada French |
| 47 | Marie Theriault | 44 | Wife | — | Canada French |
| 48 | Amédée Theriault | 25 | Son | Millwright | New Hampshire |
| 49 | Wilfred Theriault | 22 | Son | General Work | New Hampshire |
| 50 | Ellen Theriault | 20 | Daughter | Paper Mill | New Hampshire |
| 51 | Eunice Theriault | 19 | Daughter | — | New Hampshire |
| 52 | Robert White | 5 | Lodger | — | New Hampshire |
| 53 | Plant White | None | Alice | 42 | Hs 4 |
| 54 | James Mason | 42 | Head | Electrician | New York |
| 55 | Alice Mason | 31 | Wife | — | New Hampshire |
| 56 | Catherine Lynch | 63 | Head | — | New Hampshire |
| 57 | Elizabeth Lynch | 21 | Daughter | General Work | New Hampshire |
| 58 | Helena Lynch | 18 | Daughter | Operator | New Hampshire |
| 59 | Mary Lynch | 15 | Daughter | — | New Hampshire |
| 60 | Eddy Lussier | 32 | Head | Secretary | Massachusetts |
| 61 | David Lussier | 9 | Son | — | New Hampshire |
| 62 | Richard Lussier | 5 | Son | — | New Hampshire |
| 63 | Gerard Lamontagne | 30 | Head | General Work | Massachusetts |
| 64 | Alice Lamontagne | 27 | Wife | — | New Hampshire |
| 65 | Shirley Lamontagne | 5 | Daughter | — | New Hampshire |
| 66 | Clarence Lamontagne | 1 | Daughter | — | New Hampshire |
| 67 | Donald Macdonald | 42 | Head | — | New Hampshire |
| 68 | Geraldine Macdonald | 18 | Daughter | — | New Hampshire |
| 69 | Helen Macdonald | 16 | Daughter | — | New Hampshire |
| 70 | Mary Macdonald THIS PERSON | 13 | Daughter | — | New Hampshire |
| 71 | Albertine Wilson | 32 | Wife | Sample Clerk | New Hampshire |
| 72 | Kenneth Ainsley | 33 | Cousin | Backer | New Hampshire |
| 73 | Jack Boyle | 60 | Head | Janitor | Canada English |
| 74 | Winifred Boyle | 60 | Wife | — | Canada English |
| 75 | George Boyle | 23 | Son | Office Clerk | New Hampshire |
| 76 | John J. Boyle | 12 | Son | — | New Hampshire |
| 77 | Catherine Dean | 30 | Daughter | Secretary | New Hampshire |
| 78 | Barbara Dean | 2 | Daughter | — | New Hampshire |
| 79 | Mary Ledger | 55 | Head | — | Canada French |
| 80 | Maurice Ledger | 22 | Son | Sampler | New Hampshire |
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)