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Mary Macdonald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Macdonald across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | MacDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Julia Macdonald | Spouse | — | 44 | ~1896 |
| Mary Macdonald | Daughter | — | 15 | ~1925 |
| John Macdonald | Son | — | 23 | ~1917 |
| James Macdonald | Son | — | 21 | ~1919 |
| Joseph Macdonald | Son | — | 17 | ~1923 |
| Christina Macdonald | Daughter | — | 13 | ~1927 |
| Charles Macdonald | Son | — | 10 | ~1930 |
| Sarah Macdonald | Daughter | — | 19 | ~1921 |
| James Macdonald | Head | — | 43 | ~1897 |
Census Appearances
Daughter, age 5
Hudson, New Jersey · implied b. ~1925 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 15
Hudson-County, New Jersey · implied b. ~1925 — 9 household members
| Surname | MacDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Class of Worker | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 15 · b. ~1925 · New Jersey
★ You are viewing this record
Sibling
James Macdonald
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Macdonald
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Macdonald
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Macdonald
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Macdonald
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christina Macdonald
Sibling · 1940 · age 13
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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02407-00437)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vincent Lynch | 25 | Son | Loader | New York |
| 42 | Walter Lynch | 19 | Son | New Worker | New Jersey |
| 43 | Edward Lynch | 18 | Son | New Worker | New Jersey |
| 44 | Robert Keenan | 46 | Head | Stenographer | New Jersey |
| 45 | Esme Keenan | 66 | Mother | — | New Jersey |
| 46 | Irene Keenan | 45 | Sister | Saleslady | New Jersey |
| 47 | Esme Steward | 41 | Sister | — | New Jersey |
| 48 | Thomas Hopkins | 59 | Head | — | Italy |
| 49 | Carrie Hopkins | 53 | Wife | — | New York |
| 50 | Thomas Jr. Hopkins | 33 | Son | Chauffeur | New York |
| 51 | Joseph Hopkins | 24 | Son | Soldier | New York |
| 52 | Isabelle Hopkins | 21 | Daughter | Folder | New York |
| 53 | Charles Hopkins | 18 | Son | New Worker | New Jersey |
| 54 | Ralph Hopkins | 15 | Son | — | New Jersey |
| 55 | Carrie Daniels | 66 | Head | — | New York |
| 56 | Edward Daniels | 41 | Son | Steam-Fitter | New York |
| 57 | Charles Daniels | 15 | Grandson | — | Michigan |
| 58 | William Mcgranahan | 45 | Head | Lineman | Pennsylvania |
| 59 | Mary Mcgranahan | 47 | Wife | — | Pennsylvania |
| 60 | James Mcgranahan | 18 | Son | Order Boy | New Jersey |
| 61 | Leo Fenton | 39 | Head | Lineman | New Jersey |
| 62 | Mildred Fenton | 38 | Wife | — | New Jersey |
| 63 | Leo Jr. Fenton | 16 | Son | — | New Jersey |
| 64 | Mildred Fenton | 14 | Daughter | — | New Jersey |
| 65 | Clare Fenton | 12 | Daughter | — | New Jersey |
| 66 | Robert Fenton | 9 | Son | — | New Jersey |
| 67 | Harold Dickerson | 40 | Lodger | Iron Worker | New Jersey |
| 68 | James Macdonald | 43 | Head | Accountant | Canada-English |
| 69 | Julia Macdonald | 44 | Wife | — | Pennsylvania |
| 70 | John Macdonald | 23 | Son | Electrician | New Jersey |
| 71 | James Macdonald | 21 | Son | Clerk | New Jersey |
| 72 | Sarah Macdonald | 19 | Daughter | New Worker | New Jersey |
| 73 | Joseph Macdonald | 17 | Son | — | New Jersey |
| 74 | Mary Macdonald THIS PERSON | 15 | Daughter | — | New Jersey |
| 75 | Christina Macdonald | 13 | Daughter | — | New Jersey |
| 76 | Charles Macdonald | 10 | Son | — | New Jersey |
| 77 | Luke Cochrane | 61 | Head | Sales Manager | New York |
| 78 | Ann Cochrane | 54 | Wife | — | New York |
| 79 | William Cochrane | 23 | Son | School Teacher | New Jersey |
| 80 | John Cochrane | 21 | Son | — | New Jersey |
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)