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James Macdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this James Macdonald across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | MacDonald |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Bus boy |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 150 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Bus Boy |
| Township / Ward | Boston City |
| Est. Birth Year | ~1921 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Geraldine Macdonald | Daughter | — | 18 | ~1922 |
| James Macdonald | Son | — | 19 | ~1921 |
| Doris Macdonald | Son | — | 15 | ~1925 |
| E Macdonald | Head | — | 40 | ~1900 |
| William Macdonald | Son | — | 23 | ~1917 |
| John Macdonald | Son | — | 22 | ~1918 |
| Dorothy Macdonald | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Norfolk, Massachusetts
Son, age 9
Norfolk, Massachusetts · implied b. ~1921 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | James E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 19
Suffolk-County, Massachusetts · implied b. ~1921 — 7 household members
| Surname | MacDonald |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Bus boy |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 150 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 James Macdonald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Macdonald
Son · 1940 · age 19 · b. ~1921 · Massachusetts
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Sibling
John Macdonald
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Macdonald
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Macdonald
Sibling · 1940 · age 23
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
Sibling
Doris Macdonald
Sibling · 1940 · age 15
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 — 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-t0627-01682-00619)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Mcnabb | 13 | Son | — | Massachusetts |
| 2 | Stephen Mcnabb | 8 | Son | — | Massachusetts |
| 3 | Willard J. Conway | 32 | Head | Manager | Canada-English |
| 4 | Mary Conway | 35 | Wife | — | Canada-English |
| 5 | Vera Conway | 7 | Daughter | — | Massachusetts |
| 6 | Walter Conway | 1 | Son | — | Massachusetts |
| 7 | William Counihan | 33 | Head | Stationary Engineer | Rhode Island |
| 8 | Agnes Counihan | 31 | Wife | — | Massachusetts |
| 9 | Marie Counihan | 13 | Daughter | — | Massachusetts |
| 10 | Jean Counihan | 11 | Daughter | — | Massachusetts |
| 11 | James Counihan | 9 | Son | — | Massachusetts |
| 12 | William Counihan | 8 | Son | — | Massachusetts |
| 13 | Helen Counihan | 6 | Daughter | — | Massachusetts |
| 14 | Patricia Counihan | 4 | Daughter | — | Massachusetts |
| 15 | Madeline Counihan | 3 | Daughter | — | Massachusetts |
| 16 | E. Mary Macdonald | 40 | Head | — | England |
| 17 | William J. Macdonald | 23 | Son | Laborer | Canada-English |
| 18 | John H. Macdonald | 22 | Son | Laborer | Canada-English |
| 19 | James A. Macdonald THIS PERSON | 19 | Son | Bus Boy | Massachusetts |
| 20 | Geraldine Macdonald | 18 | Daughter | — | Massachusetts |
| 21 | Doris R. Macdonald | 15 | Son | — | Massachusetts |
| 22 | Dorothy T. Macdonald | 13 | Daughter | — | Massachusetts |
| 23 | Marie E. Goode | 35 | Head | — | Massachusetts |
| 24 | Barbara A. Goode | 14 | Daughter | — | Massachusetts |
| 25 | Robert E. Goode | 13 | Son | — | Massachusetts |
| 26 | Lois E. Goode | 7 | Daughter | — | Massachusetts |
| 27 | Daniel Macdonald | 42 | Head | — | Canada-English |
| 28 | Margaret Macdonald | 35 | Wife | — | Canada-English |
| 29 | Theresa Macdonald | 10 | Daughter | — | Massachusetts |
| 30 | Rita Macdonald | 9 | Daughter | — | Massachusetts |
| 31 | Anne Marie Macdonald | 6 | Daughter | — | Massachusetts |
| 32 | Daniel, Jr. Macdonald | 4 | Son | — | Massachusetts |
| 33 | Arthur S. Campbell | 40 | Head | Machinist | Massachusetts |
| 34 | Pauline A. Campbell | 41 | Wife | — | Massachusetts |
| 35 | Paul R. Jr. Campbell | 14 | Son | — | Massachusetts |
| 36 | Jean A. Campbell | 13 | Daughter | — | Massachusetts |
| 37 | Donna J. Campbell | 11 | Daughter | — | Massachusetts |
| 38 | Arthur R. Campbell | 10 | Son | — | Massachusetts |
| 39 | Russell J. Campbell | 8 | Son | — | Massachusetts |
| 40 | Angus Deagle | 56 | Head | — | Canada-French |
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)