MM
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.~1888), then head of a 4-person household.
Age 52
b. ~1888
Female
Spouse
Born: New Hampshire
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | McDonald |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | G 7 |
| 1935 Residence | Same Place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Township / Ward | Boston City |
| Est. Birth Year | ~1888 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Frances Gillis | Daughter | — | 25 | ~1915 |
| Murdock Mcdonald | Head | — | 55 | ~1885 |
| Carroll Mcdonald | Son | — | 28 | ~1912 |
| Mary Mcdonald | Spouse | — | 52 | ~1888 |
Census Appearances
Spouse, age 35
Suffolk, Massachusetts · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacDonald |
| Given Name | Mary G. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Suffolk, Massachusetts
Spouse, age 45
Suffolk, Massachusetts · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Age at First Marriage | 26 |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | Northern Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Suffolk-County, Massachusetts
Spouse, age 52
Suffolk-County, Massachusetts · implied b. ~1888 — 4 household members
| Surname | McDonald |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Class of Worker | 0 |
| Highest Grade | G 7 |
| 1935 Residence | Same Place |
| 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 Mcdonald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcdonald
Spouse · 1940 · age 52 · b. ~1888 · Massachusetts
★ You are viewing this record
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-t0627-01666-00417)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William R. Burgess | 35 | Head | Superintendent | Massachusetts |
| 42 | Jean R. Burgess | 30 | Wife | — | Massachusetts |
| 43 | Robert H. Burgess | 8 | Son | — | Massachusetts |
| 44 | Patricia C. Burgess | 4 | Daughter | — | Massachusetts |
| 45 | William J. Buckley | 50 | Head | Guard | Massachusetts |
| 46 | Margaret Buckley | 86 | Mother | — | Canada-Eng |
| 47 | Marie A. Buckley | 55 | Sister | — | Canada-Eng |
| 48 | George D. Mcdonald | 38 | Head | — | Canada-Eng |
| 49 | Sydney Mcdonald | 35 | Son | — | Canada-Eng |
| 50 | Lawrence J. Eriksen | 30 | Lodger | Bartender | Eire |
| 51 | Mandy H. Marchikonian | 61 | Lodger | Salesman | Turkey |
| 52 | Alfred Mcewen | 60 | Lodger | Salesman | Scotland |
| 53 | Thomas J. Babie | 23 | Head | Worker | Massachusetts |
| 54 | Marjorie L. Babie | 21 | Wife | — | Massachusetts |
| 55 | Celia H. Clancy | 68 | Head | — | Massachusetts |
| 56 | Alice M. Clancy | 41 | Daughter | — | Massachusetts |
| 57 | Evelyn J. Clancy | 32 | Daughter | — | Massachusetts |
| 58 | Mabel B. Attwood | 64 | Head | — | Massachusetts |
| 59 | Albert H. Peirce | 38 | Head | Salesman | England |
| 60 | Nina M. Peirce | 33 | Wife | — | Canada-Eng |
| 61 | Mary H. Peirce | 15 | Daughter | — | Massachusetts |
| 62 | Carlton W. Peirce | 5 | Nephew | — | Massachusetts |
| 63 | Frances C. Durgin | 74 | Head | — | New Hampshire |
| 64 | Anthony Durgin | 36 | Husband | Counterman | Vermont |
| 65 | Jerry J. Durgin | 8 | Son | — | New Hampshire |
| 66 | James J. Baker | 21 | Brother | Counterman | New Hampshire |
| 67 | Amelia Mcdonald | 84 | Lodger | — | Canada-Eng |
| 68 | Norman Cutter | 39 | Lodger | Chauffeur | Massachusetts |
| 69 | Pascal Alef | 54 | Head | Proprietor | Albania |
| 70 | Ermenia Alef | 46 | Wife | Saleslady | Albania |
| 71 | Pepe N. Alef | 7 | Daughter | — | Albania |
| 72 | Left Blank By Mistake | None | — | — | — |
| 73 | Carl Johnson | 55 | Head | Janitor & Helper | Sweden |
| 74 | Hilma Johnson | 53 | Wife | Cleaner | Sweden |
| 75 | Carl V. Johnson | 21 | Son | Service Station Attendant | Massachusetts |
| 76 | Harold N. Johnson | 15 | Son | — | Massachusetts |
| 77 | Murdock Mcdonald | 55 | Head | Steamfitter | Canada-Eng |
| 78 | Mary A. Mcdonald THIS PERSON | 52 | Wife | — | New Hampshire |
| 79 | Carroll J. Mcdonald | 28 | Son | Mechanic'S Helper | Massachusetts |
| 80 | Frances M. Gillis | 25 | Daughter | — | Massachusetts |
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)