MD
Mary Donahue — 1930 US Census Record
Model Tree available1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Mary Donahue across the 1910, 1920 and 1930 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed), with identified parents Mary & Sarah — first a daughter (b.~1906), then head of a 5-person household.
Age 24
b. ~1906
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Donahue |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1906 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Donahue | Daughter | — | 18 | ~1912 |
| Mary Donahue | Daughter | — | 24 | ~1906 |
| Mary Donahue | Head | — | 56 | ~1874 |
| Robert Donahue | Son | — | 26 | ~1904 |
| Herbert Donahue | Son | — | 22 | ~1908 |
Census Appearances
1910
Philadelphia, Pennsylvania
Daughter, age 2
Philadelphia, Pennsylvania · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahue |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Daughter, age 12
Philadelphia, Pennsylvania · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahue |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Daughter, age 24
Philadelphia, Pennsylvania · implied b. ~1906 — 5 household members
| Surname | Donahue |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Donahue across 3 US Census years (1910, 1920 and 1930) in Philadelphia, Pennsylvania, using XGBoost record linkage. Identified parents: mother Mary Donahue (~0.92 confidence) and mother Sarah Donahue (~0.92 confidence) and father Joseph Donahue (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Donahue
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Sarah Donahue
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
Joseph Donahue
b. ~1879
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Donahue
Daughter · 1930 · age 24 · b. ~1906 · Pennsylvania
★ You are viewing this record
Sibling
Herbert Donahue
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Donahue
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Donahue
Sibling · 1930 · age 26
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
1930 US Federal Census — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
45 people indexed on this census page (ia:1930:fifteenthcensus00reel2132:0081)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Angeline Agnello | 30 | Head | Clergyman | Italy |
| 2 | Jefferson Ciller | 31 | Head | Worker | Pennsylvania |
| 3 | Annie Ciller | 30 | Wife | — | Pennsylvania |
| 4 | Katherine Fryland | 23 | Boarder | Teacher | Pennsylvania |
| 5 | Margaret Donahue | 22 | Boarder | Teacher | Pennsylvania |
| 6 | Marie Devines | 24 | Boarder | Teacher | Pennsylvania |
| 7 | Mary Donahue | 56 | Head | — | Pennsylvania |
| 8 | Robert Donahue | 26 | Son | Patrolman | Pennsylvania |
| 9 | Mary Donahue THIS PERSON | 24 | Daughter | — | Pennsylvania |
| 10 | Herbert Donahue | 22 | Son | — | Pennsylvania |
| 11 | Catherine Donahue | 18 | Daughter | — | Pennsylvania |
| 12 | Chas V. Ludzel | 27 | Head | Clerk | Pennsylvania |
| 13 | Rose H. Ludzel | 27 | Wife | — | Pennsylvania |
| 14 | Otto Gamble | 33 | Boarder | Electrician | Germany |
| 15 | Robert Kehler | 33 | Boarder | Mechanic | Germany |
| 17 | Louis Keck | 56 | Head | Merchant | Pennsylvania |
| 18 | Roy Birchall | 44 | Boarder | Painter | Pennsylvania |
| 19 | Catherine Birchall | 40 | Boarder | — | Pennsylvania |
| 20 | Roy Birchall | 19 | Boarder | Helper | Pennsylvania |
| 21 | William Birchall | 17 | Boarder | File Cutter | Pennsylvania |
| 22 | Edward Birchall | 15 | Boarder | — | Pennsylvania |
| 23 | Marion Birchall | 13 | Boarder | — | Pennsylvania |
| 24 | Warren Birchall | 7 | Boarder | — | Pennsylvania |
| 25 | Joseph Bills | 73 | Head | Manager | Pennsylvania |
| 26 | Harriet E. Bills | 65 | Wife | — | Pennsylvania |
| 27 | Hiram G. Tully | 57 | Head | Filecutter | England |
| 28 | Mary Tully | 54 | Wife | — | Scotland |
| 29 | Eleanor Tully | 32 | Daughter | Secretary | Pennsylvania |
| 30 | Wallace Tully | 22 | Son | — | Pennsylvania |
| 31 | Helen Wilson | 29 | Daughter | — | Scotland |
| 32 | Ralph Tyler | 6 | Gr Son | — | Pennsylvania |
| 34 | William A. Snyder | 51 | Head | Fireman | Pennsylvania |
| 35 | Josephine Snyder | 51 | Wife | Clerk | Switzerland |
| 36 | William Snyder | 15 | Son | Stenographer | Pennsylvania |
| 37 | Josephine Snyder | 14 | Daughter | — | Pennsylvania |
| 38 | Ann Snyder | 13 | Daughter | — | Pennsylvania |
| 39 | Gertrude Snyder | 10 | Daughter | — | Pennsylvania |
| 40 | Robert Snyder | 4 | Son | — | Pennsylvania |
| 42 | Louis Cavalieri | 64 | Head | Laborer | Italy |
| 43 | Antoinette Cavalieri | 51 | Wife | — | Italy |
| 44 | Rose Cavalieri | 27 | Daughter | Operator | Pennsylvania |
| 45 | Eleanor Cavalieri | 25 | Daughter | Looper | Pennsylvania |
| 46 | Eva Cavalieri | 20 | Daughter | Clerk | Pennsylvania |
| 47 | Daniel Cavalieri | 19 | Son | — | Pennsylvania |
| 48 | Richard Cavalieri | 11 | Son | — | Pennsylvania |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)