MD
Mary Donohue — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Donohue across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 9-person household.
Age 18
b. ~1922
Female
Daughter
Born: Penna
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Donohue |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Penna |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Phila |
| Additional Details | |
| Occupation | New Worker |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
| Occupation | New Worker |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1922 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Donohue | Son | — | 14 | ~1926 |
| Joseph Donohue | Son | — | 21 | ~1919 |
| Catherine Donohue | Daughter | — | 22 | ~1918 |
| Mary Donohue | Daughter | — | 18 | ~1922 |
| Edward Donohue | Son | — | 20 | ~1920 |
| Margaret Donohue | Daughter | — | 26 | ~1914 |
| Edward Donohue | Head | — | 52 | ~1888 |
| William Donohue | Son | — | 15 | ~1925 |
| Catherine Donohue | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Philadelphia, Pennsylvania
Daughter, age 6
Philadelphia, Pennsylvania · implied b. ~1924 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahue |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Penna |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1940
Philadelphia-County, Pennsylvania
Daughter, age 18
Philadelphia-County, Pennsylvania · implied b. ~1922 — 9 household members
| Surname | Donohue |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Penna |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Phila |
| Occupation | New Worker |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
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 Donohue across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donohue
Daughter · 1940 · age 18 · b. ~1922 · Pennsylvania
★ You are viewing this record
Sibling
Catherine Donohue
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Donohue
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Donohue
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Donohue
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Donohue
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Donohue
Sibling · 1940 · age 20
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
17 people indexed on this census page (nara:1940:m-t0627-03692-00554)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Vincent Tremont | 48 | Head | Clerk | Penna |
| 2 | Ella Tremont | 49 | Wife | Housewife | Penna |
| 3 | John Tremont | 13 | Son | — | Penna |
| 4 | Irene Pilar | 44 | Head | Clerk | Penna |
| 5 | Ola Olson | 49 | Head | Salesman | Michigan |
| 6 | Ella Olson | 47 | Wife | Housewife | Michigan |
| 7 | Emerson Olson | 24 | Son | Clerk | Michigan |
| 8 | Jensen | 70 | Head | — | — |
| 14 | Edward Donohue | 52 | Head | Sexton | Penna |
| 15 | Catherine Donohue | 46 | Wife | — | Penna |
| 16 | Margaret Donohue | 26 | Daughter | Stenographer | Penna |
| 17 | Catherine Donohue | 22 | Daughter | Cashier | Penna |
| 18 | Joseph Donohue | 21 | Son | Plumber | Penna |
| 19 | Mary Donohue THIS PERSON | 18 | Daughter | New Worker | Penna |
| 20 | James Donohue | 14 | Son | — | Penna |
| 21 | William Donohue | 15 | Son | — | Penna |
| 22 | Edward Donohue | 20 | Son | Student | Penna |
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)