MH
Mary Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Hart across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 4-person household.
Age 52
b. ~1888
Female
Spouse
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Hart |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Kearny town |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Kearny Town |
| 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 |
|---|---|---|---|---|
| Archibald Hart | Head | — | 52 | ~1888 |
| William Hart | Son | — | 17 | ~1923 |
| Archibald Hart | Son | — | 23 | ~1917 |
| Mary Hart | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Hudson, New …
Spouse, age 35
Hudson, New Jersey · implied b. ~1885 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Scotland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Hudson, New …
Other, age 44
Hudson, New Jersey · implied b. ~1886 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Mary |
| Relationship to Head | Head-H |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 21 |
| Father's Birthplace | North Ireland |
| Mother's Birthplace | North Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Hudson-County, New …
Spouse, age 52
Hudson-County, New Jersey · implied b. ~1888 — 4 household members
| Surname | Hart |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Kearny town |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Hart
Spouse · 1940 · age 52 · b. ~1888 · New Jersey
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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 — 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-t0627-02350-00166)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Dennis | 19 | Son | Shipping Clerk | Ireland |
| 2 | James Morgan | 14 | Son | — | New Jersey |
| 3 | Eileen Morgan | 13 | daughter | — | New Jersey |
| 4 | Frank Curtis | 38 | Head | Ticket Seller | Connecticut |
| 5 | Margaret Curtis | 37 | Wife | — | New Jersey |
| 6 | William Curtis | 16 | Son | — | New Jersey |
| 7 | Joseph Germuska | 27 | Head | Shipping Clk | New Jersey |
| 8 | Helen Germuska | 26 | Wife | — | New Jersey |
| 9 | Thomas Germuska | 5 | Son | — | New Jersey |
| 10 | Andrew Lithgow | 39 | Head | Varnish Maker | Scotland |
| 11 | Anna Lithgow | 39 | Wife | — | Scotland |
| 12 | Andrew Lithgow | 16 | Son | — | New York |
| 13 | Edward Currie | 55 | Head | Machinist | Scotland |
| 14 | Margaret Currie | 50 | Wife | — | Scotland |
| 15 | Edward Currie | 20 | Son | Office Clerk | New Jersey |
| 16 | Thomas Currie | 19 | Son | Shipping Clerk | New Jersey |
| 17 | Archibald Hart | 52 | Head | Carpenter | Scotland |
| 18 | Mary Hart THIS PERSON | 52 | Wife | — | Scotland |
| 19 | Archibald Hart | 23 | Son | Tester | New Jersey |
| 20 | William Hart | 17 | Son | Laborer | Scotland |
| 21 | John Ryan | 38 | Head | Tel. Operator | Ireland |
| 22 | Mabel Ryan | 37 | Wife | — | New Jersey |
| 23 | Ryan | 10 | daughter | — | New Jersey |
| 24 | William Fallo | 49 | Head | Butcher | Austria |
| 25 | Ella Fallo | 50 | Wife | — | Austria |
| 26 | Sophie Fallo | 24 | daughter | Saleswoman | New York |
| 27 | Virginia Fallo | 15 | daughter | — | New Jersey |
| 28 | William Smith | 29 | Head | Welder | New Jersey |
| 29 | Lilly Smith | 29 | Wife | — | New Jersey |
| 30 | William Smith | 5 | Son | — | New Jersey |
| 31 | Thomas Turingeta | 43 | Head | Electrician | Rhode Island |
| 32 | Mary Turingeta | 40 | Wife | Dressmaker | New Jersey |
| 33 | Thomas Jr Turingeta | 22 | Son | Laborer | New Jersey |
| 34 | Agnes Turingeta | 16 | daughter | — | New Jersey |
| 35 | Joseph Marquet | 37 | Head | Watch Maker | New Jersey |
| 36 | Marie Marquet | 36 | Wife | — | New Jersey |
| 37 | Joseph Marquet | 13 | Son | — | New Jersey |
| 38 | Joan Marquet | 2 | daughter | — | New Jersey |
| 39 | Louise Marquet | 75 | mother | — | New Jersey |
| 40 | James Lord | 29 | Head | Semi-Prec. Grinder | Massachusetts |
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)