MD
Mary Dennis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Dennis across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 7-person household.
Age 53
b. ~1887
Female
Spouse
Born: Czechoslovakia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Dennis |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Czechoslovakia |
| 1935 Residence (City) | Bayonne City |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Czechoslovakia |
| Birthplace (normalized) | czechoslovakia |
| Township / Ward | Bayonne City |
| Est. Birth Year | ~1887 |
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 |
|---|---|---|---|---|
| Paul Dennis | Head | — | 60 | ~1880 |
| Joseph Dennis | Son | — | 16 | ~1924 |
| Florence Dennis | Daughter | — | 20 | ~1920 |
| Dorothy Dennis | Daughter | — | 11 | ~1929 |
| Peter Dennis | Son | — | 6 | ~1934 |
| Alice Dennis | Daughter | — | 15 | ~1925 |
| Mary Dennis | Spouse | — | 53 | ~1887 |
Census Appearances
1930
Hudson, New …
Other, age 43
Hudson, New Jersey · implied b. ~1887 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dennis |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Czechoslovakia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1907 |
| Age at First Marriage | 18 |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Czechoslovakia |
| Can Read/Write | Yes |
| Mother Tongue | Carpatho-Russian |
| Birth Country | Czechoslovakia |
| Birthplace (normalized) | czechoslovakia |
1940
Hudson-County, New …
Spouse, age 53
Hudson-County, New Jersey · implied b. ~1887 — 7 household members
| Surname | Dennis |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Czechoslovakia |
| 1935 Residence (City) | Bayonne City |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Czechoslovakia |
| Birthplace (normalized) | czechoslovakia |
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 Dennis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Dennis
Spouse · 1940 · age 53 · b. ~1887 · 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-t0627-02347-00201)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Josephine Wojciechowski | 21 | daughter | Rummack | New Jersey |
| 2 | Jane Wojciechowski | 20 | daughter | Stenographer | New Jersey |
| 3 | Paul Dennis | 60 | Head | Laborer | Czechoslovakia |
| 4 | Mary Dennis THIS PERSON | 53 | wife | — | Czechoslovakia |
| 5 | Florence Dennis | 20 | daughter | Laborer | New Jersey |
| 6 | Joseph Dennis | 16 | son | Laborer | New Jersey |
| 7 | Alice Dennis | 15 | daughter | — | New Jersey |
| 8 | Dorothy Dennis | 11 | daughter | — | New Jersey |
| 9 | Peter Dennis | 6 | son | — | New Jersey |
| 10 | Michael Miller | 45 | Head | Watchman | Poland |
| 11 | Josephine Miller | 43 | wife | — | Lithuania |
| 12 | Bertha Miller | 20 | daughter | — | New Jersey |
| 13 | Henry Miller | 17 | son | — | New Jersey |
| 14 | Charles Miller | 15 | son | — | New Jersey |
| 15 | Dorothy Miller | 5 | daughter | — | New Jersey |
| 16 | Henry Puthardt | 21 | Head | Floor Man | New Jersey |
| 17 | Sophie Puthardt | 20 | wife | Operator | Pennsylvania |
| 18 | George Puthardt | 2 | son | — | New Jersey |
| 19 | Edward Mcnamara | 33 | Head | Laborer | New Jersey |
| 20 | Cecilia Mcnamara | 29 | wife | — | New Jersey |
| 21 | Dorothy Mcnamara | 10 | daughter | — | New Jersey |
| 22 | Edward Mcnamara | 9 | son | — | New Jersey |
| 23 | Joseph Wells | 29 | Head | Laborer | New Jersey |
| 24 | Christine Wells | 24 | wife | — | New Jersey |
| 25 | Bruce Wells | 2 | son | — | New Jersey |
| 26 | Brian Wells | 0 | son | — | New Jersey |
| 27 | Kazimierz Tomaszewski | 51 | Head | Laborer | Poland |
| 28 | Sophie Tomaszewski | 52 | wife | — | Poland |
| 29 | Edward Tomaszewski | 20 | son | Laborer | New Jersey |
| 30 | Stanley Tomaszewski | 14 | son | — | New Jersey |
| 31 | Stanley Baguazewski | 48 | Head | Laborer | Poland |
| 32 | Veronica Baguazewski | 46 | wife | — | Poland |
| 33 | Frank Motomaszewski | 46 | Head | Laborer | Poland |
| 34 | Antonia Motomaszewski | 37 | wife | — | Poland |
| 35 | Bill Motomaszewski | 1 | son | — | New Jersey |
| 36 | Kostanti Kazmirkiewicz | 57 | Head | Laborer | Poland |
| 37 | Mary Kazmirkiewicz | 44 | wife | — | Poland |
| 38 | Henry Kazmirkiewicz | 21 | son | Laborer | New Jersey |
| 39 | John Kazmirkiewicz | 20 | son | — | New Jersey |
| 40 | Irene Kazmirkiewicz | 18 | daughter | — | New Jersey |
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)