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Mary Mcdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Mcdonald across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 8-person household.
Age 44
b. ~1896
Female
Spouse
Born: Canada
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | McDonald |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Canada |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
| Township / Ward | Boston |
| Est. Birth Year | ~1896 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Maria Mcdonald | Daughter | — | 15 | ~1925 |
| Eugenia Mcdonald | Daughter | — | 18 | ~1922 |
| Daniel Mcdonald | Head | — | 48 | ~1892 |
| A Stephen | Other | — | 46 | ~1894 |
| Jerome Mcdonald | Son | — | 4 | ~1936 |
| Joseph Mcdonald | Son | — | 16 | ~1924 |
| John Mcdonald | Son | — | 12 | ~1928 |
| Mary Mcdonald | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 25
Middlesex, Massachusetts · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Canada |
| Year of Immigration | 1919 |
| Naturalization Status | Alien |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Occupation | Servant |
| Industry | Private family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
1930
Middlesex, Massachusetts
Other, age 34
Middlesex, Massachusetts · implied b. ~1896 — 49 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mc Donald |
| Given Name | Mary |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Canada |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Occupation | Servant |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
1940
Suffolk-County, Massachusetts
Spouse, age 44
Suffolk-County, Massachusetts · implied b. ~1896 — 8 household members
| Surname | McDonald |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Canada |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Canada |
| Birthplace (normalized) | canada |
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 Mcdonald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mcdonald
Spouse · 1940 · age 44 · b. ~1896 · 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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01657-00739)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Zaccaria | 24 | daughter | Sticker | Massachusetts |
| 42 | Leo Zaccaria | 19 | son | New Worker | Massachusetts |
| 43 | Anthony Zaccaria | 11 | son | — | Massachusetts |
| 44 | Joseph Amarin | 49 | Head | Longshoreman | Italy |
| 45 | Rose Amarin | 45 | Wife | Tailor | Italy |
| 46 | Mary Amarin | 19 | daughter | New Worker | Massachusetts |
| 47 | Alba Amarin | 17 | daughter | — | Massachusetts |
| 48 | Peter Amarin | 82 | Father | — | Italy |
| 49 | James A Pomnis | 28 | Head | Electrician Helper | Massachusetts |
| 50 | Mildred R Pomnis | 27 | Wife | — | Massachusetts |
| 51 | James A Jr Pomnis | 0 | son | — | Massachusetts |
| 52 | Eugene D Mannetta | 27 | Head | Truck Driver | Massachusetts |
| 53 | Phyllis Mannetta | 26 | Wife | — | Massachusetts |
| 54 | Eugene Jr Mannetta | 5 | son | — | Massachusetts |
| 55 | Robert C Mannetta | 1 | son | — | Massachusetts |
| 56 | Drimondo Magnasco | 33 | Head | Crane Operator | Massachusetts |
| 57 | Anna Magnasco | 25 | Wife | — | Massachusetts |
| 58 | Elaine Magnasco | 1 | daughter | — | Massachusetts |
| 59 | Carl Mannetta | 68 | Head | Laborer | Italy |
| 60 | Lena Mannetta | 65 | Wife | — | Italy |
| 61 | George M Mannetta | 23 | son | General Laborer | Massachusetts |
| 62 | Olympia Mannetta | 21 | daughter | New Worker | Massachusetts |
| 63 | Samuel Casallo | 36 | Head | Pipe Layer | Massachusetts |
| 64 | Louise Casallo | 36 | Wife | — | Italy |
| 65 | Phyllis Casallo | 13 | daughter | — | Massachusetts |
| 66 | Antonio Casallo | 7 | son | — | Massachusetts |
| 67 | Samuel Jr Casallo | 5 | son | — | Massachusetts |
| 68 | Vincent Puzzo | 42 | Head | Laborer | Italy |
| 69 | Anna Puzzo | 32 | Wife | — | Italy |
| 70 | Constance Puzzo | 15 | daughter | — | Massachusetts |
| 71 | Benjamin Puzzo | 11 | son | — | Massachusetts |
| 72 | Philip Puzzo | 8 | son | — | Massachusetts |
| 73 | Daniel J Mcdonald | 48 | Head | Street Car Operator | Canada |
| 74 | Mary E Mcdonald THIS PERSON | 44 | Wife | — | Canada |
| 75 | Eugenia Mcdonald | 18 | daughter | — | Massachusetts |
| 76 | Joseph Mcdonald | 16 | son | — | Massachusetts |
| 77 | Maria Mcdonald | 15 | daughter | — | Massachusetts |
| 78 | John J Mcdonald | 12 | son | — | Massachusetts |
| 79 | Jerome J Mcdonald | 4 | son | — | Massachusetts |
| 80 | A Stephen | 46 | Brother | Carpenter | Canada |
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)