MD
Mary Donnelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Donnelly across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 12-person household.
Age 39
b. ~1901
Female
Spouse
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1901 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Florence Donnelly | Daughter | — | 13 | ~1927 |
| Patricia Donnelly | Daughter | — | 2 | ~1938 |
| Rita Donnelly | Daughter | — | 5 | ~1935 |
| Estella Donnelly | Daughter | — | 19 | ~1921 |
| Eileen Donnelly | Daughter | — | 10 | ~1930 |
| Mary Donnelly | Daughter | — | 14 | ~1926 |
| Harry Donnelly | Head | — | 40 | ~1900 |
| James Donnelly | Son | — | 1 | ~1939 |
| Richard Donnelly | Son | — | 9 | ~1931 |
| John Donnelly | Son | — | 7 | ~1933 |
| Harry Donnelly | Son | — | 16 | ~1924 |
| Mary Donnelly | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Philadelphia, Pennsylvania
Other, age 29
Philadelphia, Pennsylvania · implied b. ~1901 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 19 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Philadelphia-County, Pennsylvania
Spouse, age 39
Philadelphia-County, Pennsylvania · implied b. ~1901 — 12 household members
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Philadelphia |
| Class of Worker | 0 |
| Highest Grade | 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
Spouse · 1940 · age 39 · b. ~1901 · Pennsylvania
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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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-03731-00461)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clara Deister | 67 | Head | — | Pennsylvania |
| 2 | Harry Donnelly | 40 | Head | Machinist | Pennsylvania |
| 3 | Mary Donnelly THIS PERSON | 39 | Wife | — | New Jersey |
| 4 | Estella Donnelly | 19 | Daughter | Factory Hand | Pennsylvania |
| 5 | Harry Donnelly | 16 | Son | Bellboy | Pennsylvania |
| 6 | Mary Donnelly | 14 | Daughter | — | Pennsylvania |
| 7 | Florence Donnelly | 13 | Daughter | — | Pennsylvania |
| 8 | Eileen Donnelly | 10 | Daughter | — | Pennsylvania |
| 9 | Richard Donnelly | 9 | Son | — | Pennsylvania |
| 10 | John Donnelly | 7 | Son | — | Pennsylvania |
| 11 | Rita Donnelly | 5 | Daughter | — | Pennsylvania |
| 12 | Patricia Donnelly | 2 | Daughter | — | Pennsylvania |
| 13 | James Donnelly | 1 | Son | — | Pennsylvania |
| 18 | William Shaw | 22 | Head | Apprentice Machinist | Pennsylvania |
| 19 | Olive Shaw | 22 | Wife | — | New Jersey |
| 20 | Fred Ballugge | 57 | Head | Butcher | Germany |
| 21 | Tillie Ballugge | 57 | Wife | — | Germany |
| 22 | Charles Grammick | 28 | Son | Laborer | Pennsylvania |
| 23 | Lincoln Laxson | 30 | Head | Jointer | Pennsylvania |
| 24 | Leonard Brigg | 69 | Head | — | Pennsylvania |
| 25 | Joseph Titus | 28 | Head | Pricer | Pennsylvania |
| 26 | Mildred Titus | 26 | Wife | Floor Lady | Pennsylvania |
| 27 | Harry Elliott | 23 | Head | Printing Apprentice | Pennsylvania |
| 28 | Isabel Elliott | 18 | Wife | — | Pennsylvania |
| 29 | Magdalen Elliott | 1 | Daughter | — | Pennsylvania |
| 30 | Emily Dooley | 21 | Sister-in-law | Stamper | Pennsylvania |
| 31 | John W. Scott | 69 | Head | Supervisor | Pennsylvania |
| 32 | Virginia Scott | 68 | Wife | — | Pennsylvania |
| 33 | Charles Bailey | 53 | Head | Mover'S Helper | New Jersey |
| 34 | Lottie Bailey | 55 | Wife | — | Maryland |
| 35 | Evelyn Bailey | 26 | Daughter | Salesgirl | New Jersey |
| 36 | Robert Bailey | 15 | Son | — | Pennsylvania |
| 37 | William Elliott | 61 | Head | Millwright | Pennsylvania |
| 38 | Isabelle Elliott | 36 | Daughter | Secretary | Pennsylvania |
| 39 | Earl Zanger | 40 | Head | Laborer | Pennsylvania |
| 40 | Gladys Zanger | 33 | Wife | — | 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)