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Mary Mueller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Mueller across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 4-person household.
Age 38
b. ~1902
Female
Spouse
Born: Hungary
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Mueller |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Hungary |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | New Jersey |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1902 |
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 |
|---|---|---|---|---|
| Stephen Mueller | Head | — | 44 | ~1896 |
| Mary Mueller | Spouse | — | 38 | ~1902 |
| Steve Mueller | Son | — | 15 | ~1925 |
| Mary Mueller | Daughter | — | 17 | ~1923 |
Census Appearances
Spouse, age 29
Hudson, New Jersey · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Muller |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Hungary |
| Naturalization Status | Naturalized |
| Year of Immigration | 1922 |
| Age at First Marriage | 21 |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Can Read/Write | Yes |
| Mother Tongue | Hungarian |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
1940
Hudson-County, New …
Spouse, age 38
Hudson-County, New Jersey · implied b. ~1902 — 4 household members
| Surname | Mueller |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Hungary |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | New Jersey |
| Birth Country | Hungary |
| Birthplace (normalized) | hungary |
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 Mueller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mueller
Spouse · 1940 · age 38 · b. ~1902 · 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-t0627-02407-00404)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stephen Mueller | 44 | Head | Boiler Maker | Hungary |
| 2 | Mary Mueller THIS PERSON | 38 | Wife | — | Hungary |
| 3 | Mary Mueller | 17 | Daughter | — | New Jersey |
| 4 | Steve Mueller | 15 | Son | — | New Jersey |
| 5 | Ralph Laico | 51 | Head | Helper | Italy |
| 6 | Mary Laico | 42 | Wife | — | Italy |
| 7 | Nicholas Laico | 31 | Son | Laborer | Jersey City |
| 8 | Dominic Laico | 29 | Son | Pugilist | New Jersey |
| 9 | Stella Laico | 26 | Daughter | Operator | New Jersey |
| 10 | Louis Laico | 24 | Son | Chauffeur | New Jersey |
| 11 | Joseph Laico | 19 | Son | Helper | New Jersey |
| 12 | Larry Laico | 17 | Son | Clerk | New Jersey |
| 13 | Thomas Lyden | 35 | Head | Handler | Ireland |
| 14 | Mary Lyden | 33 | Wife | — | Ireland |
| 15 | Margaret Lyden | 9 | Daughter | — | Jersey City |
| 16 | Martin Lyden | 7 | Son | — | Jersey City |
| 17 | Thomas Lyden | 4 | Son | — | Jersey City |
| 18 | Oliver Landry | 38 | Head | Wire Insp. | Mass. |
| 19 | Albertina Landry | 32 | Wife | — | Mass. |
| 20 | Donald Landry | 11 | Son | — | Jersey City |
| 21 | Richard Landry | 7 | Son | — | Jersey City |
| 22 | Thomas Marshallo | 29 | Head | Driver | Jersey City |
| 23 | Mary Marshallo | 28 | Wife | — | Jersey City |
| 24 | Theresa Marshallo | 1 | Daughter | — | Jersey City |
| 25 | Anthony Vitale | 34 | Head | Driver | New Jersey |
| 26 | Celia Vitale | 34 | Wife | Stripper | New Jersey |
| 27 | John Theurer | 45 | Head | Foreman | New Jersey |
| 28 | Maria Theurer | 43 | Wife | — | New York |
| 29 | Wilfred Theurer | 21 | Son | Weigher | New Jersey |
| 30 | Catherine Theurer | 19 | Daughter | Secretary | New Jersey |
| 31 | John Theurer | 16 | Son | — | New Jersey |
| 32 | Anthony Theurer | 13 | Son | — | New Jersey |
| 33 | Paul Theurer | 13 | Son | — | New Jersey |
| 34 | Marie Theurer | 10 | Daughter | — | New Jersey |
| 35 | Richard Theurer | 7 | Son | — | New Jersey |
| 36 | Andrew Rotolo | 50 | Head | Pipe Fitter | Italy |
| 37 | Carrie Rotolo | 48 | Wife | — | Jersey City |
| 38 | Daniel Rotolo | 23 | Son | Roller | Jersey City |
| 39 | Ivana Rotolo | 20 | Daughter | Inspector | Jersey City |
| 40 | Andrew Jr Rotolo | 16 | Son | — | Jersey City |
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)