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Mary Macdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Macdonald across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 6-person household.
Age 42
b. ~1898
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | MacDonald |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | at home |
| Industry | at home |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | At Home |
| Township / Ward | Boston City |
| Est. Birth Year | ~1898 |
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 |
|---|---|---|---|---|
| John Macdonald | Son | — | 17 | ~1923 |
| Margaret Macdonald | Daughter | — | 10 | ~1930 |
| Mary Macdonald | Spouse | — | 42 | ~1898 |
| Joseph Macdonald | Head | — | 42 | ~1898 |
| Joseph Macdonald | Son | — | 19 | ~1921 |
| Francis Macdonald | Son | — | 15 | ~1925 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 33
Suffolk, Massachusetts · implied b. ~1897 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Maid |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Ireland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1927 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Maid |
| Industry | Hotel |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Suffolk-County, Massachusetts
Spouse, age 42
Suffolk-County, Massachusetts · implied b. ~1898 — 6 household members
| Surname | MacDonald |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Occupation | at home |
| Industry | at home |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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.
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This person
Anchor record
Mary Macdonald
Spouse · 1940 · age 42 · b. ~1898 · 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-t0627-01668-00354)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralph Mcdonnell | 21 | Son | Orderly | Mass |
| 2 | Sarah A Mcdonnell | 17 | Daughter | New Worker | Mass |
| 3 | Michael J Keenan | 71 | Head | Janitor | Ireland |
| 4 | Ellen Keenan | 65 | Wife | At Home | Ireland |
| 5 | James Mcmanus | 53 | Lodger | Coal Worker | Ireland |
| 6 | Isabella F Mcparry | 38 | Head | At Home | Mass |
| 7 | Lawrence J Mcparry | 15 | Son | — | Mass |
| 8 | Lillian A Mcparry | 13 | Daughter | — | Mass |
| 9 | Charles F Mcparry | 7 | Son | — | Mass |
| 10 | Thomas J Lyons | 47 | Head | Operator | Mass |
| 11 | Mary E Lyons | 23 | Wife | Clerk Mail | Mass |
| 12 | Kathleen T Lyons | 21 | Daughter | At Home | Mass |
| 13 | Thomas J Lyons | 20 | Son | Clerk Hood | Mass |
| 14 | Mary R Carr | 26 | Niece | Second Girl | Mass |
| 15 | Arthur Liddell | 33 | Head | Electrician | Kentucky |
| 16 | Anne L Liddell | 32 | Wife | At Home | Mass |
| 17 | Arthur Jr Liddell | 11 | Son | — | Mass |
| 18 | Ann L Liddell | 9 | Daughter | — | Mass |
| 19 | Jeanne M Liddell | 8 | Daughter | — | Mass |
| 20 | Valentine A Chapman | 60 | Head | Stone Keeper | Canada |
| 21 | Joseph J Chapman | 65 | Brother | Bookkeeper | Mass |
| 22 | Joseph A Macdonald | 42 | Head | Electrician | Mass |
| 23 | Mary E Macdonald THIS PERSON | 42 | Wife | At Home | Ireland |
| 24 | Joseph L Macdonald | 19 | Son | Clerk | Mass |
| 25 | John F Macdonald | 17 | Son | — | Mass |
| 26 | Francis P Macdonald | 15 | Son | Paper Deliver | Mass |
| 27 | Margaret Macdonald | 10 | Daughter | — | Mass |
| 28 | Michael J Neilan | 50 | Head | Elevator Operator | Ireland |
| 29 | Catherine A Neilan | 47 | Wife | At Home | Mass |
| 30 | Ellen C Neilan | 14 | Daughter | — | Mass |
| 31 | Julia Cotter | 49 | Head | Ward Maid | Ireland |
| 32 | Kathleen F Mckinnon | 22 | Lodger | Matron | Canada |
| 33 | Thomas F Ward | 44 | Head | Fireman | Ireland |
| 34 | Josephine F Ward | 43 | Wife | At Home | Mass |
| 35 | Josephine F Ward | 15 | Daughter | Attendant | Mass |
| 36 | Lillian P Ward | 14 | Daughter | — | Mass |
| 37 | Katherine M Ward | 2 | Daughter | — | Mass |
| 38 | Thomas V Ward | 1 | Son | — | Mass |
| 39 | Kathleen V Conrad | 43 | Head | At Home | Canada |
| 40 | Conrad | 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)