MD
Mary Donnelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Donnelly across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1884), then head of a 10-person household.
Age 56
b. ~1884
Female
Spouse
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1884 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thelma Donnelly | Daughter | — | 17 | ~1923 |
| Rita Donnelly | Daughter | — | 25 | ~1915 |
| Jean Donnelly | Daughter | — | 21 | ~1919 |
| Loretta Donnelly | Daughter | — | 23 | ~1917 |
| Dorothy Donnelly | Daughter | — | 32 | ~1908 |
| Frank Donnelly | Head | — | 65 | ~1875 |
| James Donnelly | Son | — | 16 | ~1924 |
| Edward Donnelly | Son | — | 15 | ~1925 |
| Hugh Donnelly | Son | — | 11 | ~1929 |
| Mary Donnelly | Spouse | — | 56 | ~1884 |
Census Appearances
1930
Hudson, New …
Spouse, age 45
Hudson, New Jersey · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 19 |
| Father's Birthplace | Scotland |
| 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 …
Spouse, age 56
Hudson-County, New Jersey · implied b. ~1884 — 10 household members
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Highest Grade | No 8 |
| 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 Donnelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Donnelly
Spouse · 1940 · age 56 · b. ~1884 · 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-t0627-02407-00075)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Ward | 61 | Wife | — | New York |
| 42 | Francis Ward | 27 | Son | Record Clerk | New Jersey |
| 43 | Joseph Ward | 25 | Son | Stock Clerk | New Jersey |
| 44 | Bernard Ward | 25 | Son | Stock Clerk | New Jersey |
| 45 | John Ward | 22 | Son | New Worker | New Jersey |
| 46 | Thomas Brady | 33 | Head | Cutter | Eire |
| 47 | Margaret Brady | 27 | Wife | — | Eire |
| 48 | Peter Brady | 6 | Son | — | New Jersey |
| 49 | Mary Brady | 5 | Daughter | — | New Jersey |
| 50 | Patrick Brady | 4 | Son | — | New Jersey |
| 51 | Francis Davis | 42 | Head | Electrician | New Jersey |
| 52 | Margaret Davis | 45 | Wife | — | New York |
| 53 | Anna Davis | 63 | Head | — | New Jersey |
| 54 | Walter Davis | 38 | Son | Salesman | New Jersey |
| 55 | Irene Davis | 38 | Daughter Law | — | New Jersey |
| 56 | Walter Jr Davis | 3 | Grandson | — | New Jersey |
| 57 | Elizabeth Davis | 2 | Daughter | — | New Jersey |
| 58 | Frank Donnelly | 65 | Head | Inspector | New Jersey |
| 59 | Mary Donnelly THIS PERSON | 56 | Wife | — | New Jersey |
| 60 | Dorothy Donnelly | 32 | Daughter | Teacher | New Jersey |
| 61 | Rita Donnelly | 25 | Daughter | Secretary | New Jersey |
| 62 | Loretta Donnelly | 23 | Daughter | Elevator Operator | New Jersey |
| 63 | Jean Donnelly | 21 | Daughter | Draft Clerk | New Jersey |
| 64 | Thelma Donnelly | 17 | Daughter | — | New Jersey |
| 65 | James Donnelly | 16 | Son | — | New Jersey |
| 66 | Edward Donnelly | 15 | Son | — | New Jersey |
| 67 | Hugh Donnelly | 11 | Son | — | New Jersey |
| 68 | Patrick Donnelly | 68 | Head | Freeholder | New Jersey |
| 69 | Mary Donnelly | 67 | Wife | — | New Jersey |
| 70 | Allan Donnelly | 38 | Daughter | Teacher | New Jersey |
| 71 | Frank Donnelly | 36 | Son | Salesman | New Jersey |
| 72 | Edward Drochner | 49 | Head | Jewelry Maker | New York |
| 73 | Catherine Drochner | 47 | Wife | — | New Jersey |
| 74 | Barbara Hammer | 80 | Mother Law | — | Germany |
| 75 | Teresa Curley | 42 | Head | Stenographer | Eire |
| 76 | Doris Curley | 19 | Daughter | Stenographer | New Jersey |
| 77 | Margaret Curley | 15 | Daughter | — | New Jersey |
| 78 | George Ellerick | 67 | Head | Rail Clerk | New York |
| 79 | Kittie Ellerick | 61 | Wife | — | New Jersey |
| 80 | Frank Davis | 62 | Head | Laborer | Illinois |
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)