MC
Mary Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Cox across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed), with identified parents Abraham & Madeline — first a daughter (b.~1916), then head of a 2-person household.
Age 24
b. ~1916
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Cox |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Bayonne City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Saleslady |
| Industry | Dep't. Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 289 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Saleslady |
| Township / Ward | Bayonne City |
| Est. Birth Year | ~1916 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cox | Daughter | — | 24 | ~1916 |
| Patrick Cox | Head | — | 49 | ~1891 |
Census Appearances
1920
Hudson, New …
Daughter, age 2
Hudson, New Jersey · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | May V |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Speaks English | none |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Daughter, age 13
Hudson, New Jersey · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | May A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 24
Hudson-County, New Jersey · implied b. ~1916 — 2 household members
| Surname | Cox |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Bayonne City |
| 1935 Residence (County) | Hudson |
| Occupation | Saleslady |
| Industry | Dep't. Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 289 |
| Highest Grade | Hs 4 |
| 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 Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Abraham Cox (~0.92 confidence) and mother Madeline Cox (~0.92 confidence) and father Patrick Cox (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Abraham Cox
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Madeline Cox
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
Patrick Cox
b. ~1891
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Cox
Daughter · 1940 · age 24 · b. ~1916 · New Jersey
★ You are viewing this record
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-t0627-02346-00102)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles R. Mcbarron | 37 | Son | Salesman | New Jersey |
| 42 | Julius R. Mcbarron | 33 | Son | Stationary Fireman | New Jersey |
| 43 | Kylia O'Connor | 62 | Head | — | Italy |
| 44 | Frank O'Connor | 28 | Daughter | Secretary | New Jersey |
| 45 | Virginia O'Connor | 27 | Daughter | Stenographer | New Jersey |
| 46 | Henry O'Connor | 72 | Lodger | — | Italy |
| 47 | Frances M. Taylor | 72 | Head | Manager | New Jersey |
| 48 | Francis M. Taylor | 39 | Son | Clerk | New Jersey |
| 49 | Donald M. Taylor | 37 | Son | Meter Reader | New Jersey |
| 50 | Philip C. Taylor | 35 | Son | Engineer | New Jersey |
| 51 | Douglas J. Taylor | 30 | Son | Stock Clerk | New Jersey |
| 52 | Ernest Ruhlmann | 39 | Head | Accountant | New Jersey |
| 53 | Dorothy Ruhlmann | 39 | Wife | — | New Jersey |
| 54 | Doris Ruhlmann | 8 | Daughter | — | New Jersey |
| 55 | Lydia Deming | 66 | Mother-in-law | — | New Jersey |
| 56 | Philip Whitehouse | 40 | Head | Tool Maker | England |
| 57 | Emma Whitehouse | 31 | Wife | — | England |
| 58 | Philip Jr. Whitehouse | 0 | Son | — | New Jersey |
| 59 | Louis Altieri | 54 | Head | Painter | Italy |
| 60 | Concetta Altieri | 45 | Wife | — | Italy |
| 61 | Angelina Altieri | 22 | Daughter | Secretary | New York |
| 62 | Antoinette Altieri | 20 | Daughter | Beautician | New Jersey |
| 63 | Margaret Dooley | 65 | Head | — | Ireland |
| 64 | Harry C. Smith | 44 | Head | Policeman | New Jersey |
| 65 | Helen Smith | 44 | Wife | — | New Jersey |
| 66 | James H. Keegan | 56 | Head | Sheet Metal Worker | New Jersey |
| 67 | Grace Keegan | 50 | Wife | — | New Jersey |
| 68 | Grace K. Pratt | 29 | Daughter | Teacher | New Jersey |
| 69 | Leon Shapiro | 65 | Head | — | Poland |
| 70 | Pearl Shapiro | 63 | Wife | — | Poland |
| 71 | Matilda Shapiro | 35 | Daughter | Dressmaker | Poland |
| 72 | Bessie Shapiro | 33 | Daughter | Dressmaker | Poland |
| 73 | Nathan Shapiro | 31 | Son | Plumber | Poland |
| 74 | Sadie Shapiro | 28 | Daughter | Dressmaker | Poland |
| 75 | Evelyn Shapiro | 26 | Daughter | Teacher | Poland |
| 76 | Adolph Beckmann | 63 | Head | — | Russia |
| 77 | Sonia Beckmann | 35 | Daughter | Secretary | Russia |
| 78 | Rudolph R. Beckmann | 30 | Son | Draftsman | Russia |
| 79 | Patrick Cox | 49 | Head | Ass'T. Pump Op. | Ireland |
| 80 | Mary Cox THIS PERSON | 24 | Daughter | Saleslady | New Jersey |
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)