MC
Mary Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bronx-County, New York
Our Model Tree links this Mary Campbell across the 1920, 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 7-person household.
Age 45
b. ~1895
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | Campbell |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Bronx |
| 1935 Residence (County) | Bronx |
| Naturalization Status | First papers filed |
| Additional Details | |
| Highest Grade | No 8 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | New York City |
| Est. Birth Year | ~1895 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Campbell | Daughter | — | 20 | ~1920 |
| Joan Campbell | Daughter | — | 8 | ~1932 |
| Theresa Campbell | Daughter | — | 12 | ~1928 |
| Rose Campbell | Daughter | — | 17 | ~1923 |
| Mary Campbell | Daughter | — | 8 | ~1932 |
| Thomas Campbell | Head | — | 47 | ~1893 |
| Mary Campbell | Spouse | — | 45 | ~1895 |
Census Appearances
1920
New York, …
Other, age 25
New York, New York · implied b. ~1895 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Mary |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1911 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Waitress |
| Industry | Tea Room |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Bronx, New …
Other, age 35
Bronx, New York · implied b. ~1895 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1912 |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Bronx-County, New …
Spouse, age 45
Bronx-County, New York · implied b. ~1895 — 7 household members
| Surname | Campbell |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Bronx |
| 1935 Residence (County) | Bronx |
| Naturalization Status | First papers filed |
| Highest Grade | No 8 |
| 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 Campbell across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Campbell
Spouse · 1940 · age 45 · b. ~1895 · New York
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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 — Bronx-County, New York
Open full size
1940 US Federal Census — Bronx-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02486-00830)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Strandin | 26 | Head | Clerk | New York |
| 2 | Dorothy Strandin | 23 | Wife | Clerk | New York |
| 3 | Third Party Not A Resident | None | — | — | — |
| 4 | Bernard, Jr. Mc Kee | 60 | Head | Retired | New York |
| 5 | Jennie Mc Kee | 56 | Wife | — | New York |
| 6 | Daniel Mc Kee | 25 | Son | Clerk'S Helper | New York |
| 7 | Francis Mc Kee | 18 | Son | — | New York |
| 8 | John Mc Kee | 36 | Son | Ticket Agent | New York |
| 9 | John Jr. Mc Kee | 10 | Grandson | — | New York |
| 10 | Charles Ross | 60 | Brother-in-law | Drill Runner | New York |
| 11 | Helen Donovan | 51 | Sister-in-law | Saleswoman | New York |
| 12 | Francis Mc Connell | 52 | Head | Painter | Scotland |
| 13 | Mary Mc Connell | 46 | Wife | — | Ireland |
| 14 | Francis Mc Connell | 23 | Son | Cashier | New York |
| 15 | Muriel Mc Connell | 16 | Daughter | — | New York |
| 16 | John Murphy | 7 | Nephew | — | New York |
| 17 | Joseph Moloney | 39 | Head | Truckman | New York |
| 18 | Margaret Moloney | 34 | Wife | — | New Jersey |
| 19 | Charles Adams | 16 | Son | — | New York |
| 20 | August Kelzen | 36 | Head | Carpenter | New York |
| 21 | Anna Kelzen | 36 | Wife | — | New York |
| 22 | Frederick S. Ketcham | 64 | Brother-in-law | — | New York |
| 23 | William Ketcham | 34 | Brother-in-law | — | New York |
| 24 | Francis E. Rock | 39 | Head | Policeman | New York |
| 25 | Dorothy A. Rock | 34 | Wife | Operator | New York |
| 26 | Francis H. Rock | 7 | Son | — | New York |
| 27 | Rose De Mott | 17 | Maid | Maid | Indiana |
| 28 | — | None | — | — | — |
| 29 | Charles H. Dauermann | 57 | Head | Turner | New York |
| 30 | Mary A. Dauermann | 55 | Wife | — | Pennsylvania |
| 31 | Leonard Dauermann | 22 | Son | Turner | New York |
| 32 | Frederick Leonhard | 69 | Head | Painter | New York |
| 33 | Thomas Campbell | 47 | Head | Engineer | Ireland |
| 34 | Mary Campbell THIS PERSON | 45 | Wife | — | Ireland |
| 35 | Catherine Mary Campbell | 20 | Daughter | Salesgirl | New York |
| 36 | Rose Campbell | 17 | Daughter | — | New York |
| 37 | Theresa Campbell | 12 | Daughter | — | New York |
| 38 | Mary Christine Campbell | 8 | Daughter | — | New York |
| 39 | Joan Campbell | 8 | Daughter | — | New York |
| 40 | Joseph Haernern | 50 | Head | Broker | Germany |
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)