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 daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Donnelly |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Bayonne 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 | Bayonne City |
| Est. Birth Year | ~1925 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Donnelly | Daughter | — | 15 | ~1925 |
| Grace Donnelly | Daughter | — | 5 | ~1935 |
| Catherine Donnelly | Daughter | — | 8 | ~1932 |
| William Donnelly | Head | — | 39 | ~1901 |
| Barbara Mccabe | Other | — | 37 | ~1903 |
| William Donnelly | Son | — | 13 | ~1927 |
| Michael Donnelly | Son | — | 10 | ~1930 |
| Mary Donnelly | Spouse | — | 33 | ~1907 |
Census Appearances
1930
Hudson, New …
Daughter, age 4
Hudson, New Jersey · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 15
Hudson-County, New Jersey · implied b. ~1925 — 8 household members
| Surname | Donnelly |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Bayonne 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.
Show:
This person
Anchor record
Mary Donnelly
Daughter · 1940 · age 15 · b. ~1925 · New Jersey
★ You are viewing this record
Sibling
Catherine Donnelly
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Donnelly
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Donnelly
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Donnelly
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-02344-00475)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Stella Solan | 40 | Sister | — | Poland |
| 42 | D. Frank Lynch | 53 | Head | Supt. | New Jersey |
| 43 | Ellen Lynch | 55 | Wife | — | New Jersey |
| 44 | James E. Lynch | 55 | Brother | Laborer | New Jersey |
| 45 | John Campbell | 33 | Boarder | Printer | New Jersey |
| 46 | Eleanor Walsh | 58 | Head | Pipe Fitter Helper | Pa. |
| 47 | Julia Walsh | 32 | Wife | — | Pa. |
| 48 | Kathleen Walsh | 5 | Daughter | — | Pa. |
| 49 | Constantino Mancuso | 36 | Head | Painter | New Jersey |
| 50 | Mary E. Mancuso | 31 | Wife | — | New York |
| 51 | George Tizzi | 38 | Head | Laborer | New York |
| 52 | Lina Tizzi | 35 | Wife | Laborer | Italy |
| 53 | Madeline Tizzi | 8 | Daughter | — | New Jersey |
| 54 | Joseph Tizzi | 7 | Son | — | New Jersey |
| 55 | George Tizzi | 5 | Son | — | New Jersey |
| 56 | Frank Vallone | 50 | Head | Barber | Italy |
| 57 | Rose Vallone | 45 | Wife | — | Italy |
| 58 | Anthony Vallone | 23 | Son | Laborer | New Jersey |
| 59 | Catherine Vallone | 21 | Daughter | Insole Binding | New Jersey |
| 60 | Louis Vallone | 20 | Son | Laborer | New Jersey |
| 61 | Frances Vallone | 14 | Daughter | — | New Jersey |
| 62 | Mary Vallone | 13 | Daughter | — | New Jersey |
| 63 | Vincent Vallone | 11 | Son | — | New Jersey |
| 64 | Rose Vallone | 5 | Daughter | — | New Jersey |
| 65 | Rich Frawley | 45 | Head | Solicitor | New York |
| 66 | Bernice Frawley | 20 | Daughter | Stenographer | New Jersey |
| 67 | Milton Frawley | 21 | Son | Salesman, Ships | New Jersey |
| 68 | Murray Frawley | 17 | Son | — | New Jersey |
| 69 | Franklin Frawley | 15 | Daughter | — | New Jersey |
| 70 | William Donnelly | 39 | Head | Fireman | New Jersey |
| 71 | Mary Donnelly | 33 | Wife | — | New Jersey |
| 72 | Mary Frances Donnelly THIS PERSON | 15 | Daughter | — | New Jersey |
| 73 | William Donnelly | 13 | Son | — | New Jersey |
| 74 | Michael Donnelly | 10 | Son | — | New Jersey |
| 75 | Catherine Donnelly | 8 | Daughter | — | New Jersey |
| 76 | Grace Donnelly | 5 | Daughter | — | New Jersey |
| 77 | Barbara Mccabe | 37 | Sister-in-law | Marker | New Jersey |
| 78 | Stella Baker | 42 | Head | Proprietor | New Jersey |
| 79 | Edward English | 53 | Brother | — | Poland |
| 80 | Brother Amelia | None | F | — | — |
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)