MD
Mary Donnelly — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Mary Donnelly across the 1930 and 1940 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 7-person household.
Age 9
b. ~1921
Female
Daughter
Born: Penna
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1921 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Donnelly | Daughter | — | 5 | ~1925 |
| Theresa Donnelly | Daughter | — | 2 | ~1928 |
| Mary Donnelly | Daughter | — | 9 | ~1921 |
| Frank Donnelly | Head | — | 39 | ~1891 |
| James Donnelly | Son | — | 11 | ~1919 |
| Frankie Donnelly | Son | — | 14 | ~1916 |
| Bridget Donnelly | Spouse | — | 38 | ~1892 |
Census Appearances
1930
Philadelphia, Pennsylvania
Daughter, age 9
Philadelphia, Pennsylvania · implied b. ~1921 — 7 household members
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1940
Philadelphia-County, Pennsylvania
Daughter, age 19
Philadelphia-County, Pennsylvania · implied b. ~1921 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Margaret M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Penna |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Inspector |
| Industry | Can Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 300 |
| Highest Grade | Hs 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 Donnelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donnelly
Daughter · 1930 · age 9 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Theresa Donnelly
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frankie Donnelly
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Donnelly
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Donnelly
Sibling · 1930 · age 5
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
48 people indexed on this census page (ia:1930:fifteenthcensus00reel2137:0806)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Benjamin Lupert | 54 | Head | — | Italy |
| 2 | Joseph Lupert | 24 | Son | Mechanic | Italy |
| 3 | John De Marco | 36 | Son-in-law | Truck Driver | Italy |
| 4 | Anna De Marco | 21 | Daughter | — | Italy |
| 5 | Frank Lupert | 19 | Son | Plumber | Italy |
| 6 | Mary Lupert | 17 | Daughter | None At Present | Italy |
| 7 | John Lupert | 13 | Son | — | Penna |
| 8 | Gloria De Marco | 3 | Daughter | — | Penna |
| 9 | Philis De Marco | 2 | Daughter | — | Penna |
| 10 | Gaetano Di Graciano | 37 | Boarder | Laborer | Italy |
| 11 | John Descano | 50 | Head | City Employee | Italy |
| 12 | Angela Descano | 46 | Wife | — | Italy |
| 13 | Salvatore Descano | 24 | Son | Wood Finisher | Penna |
| 14 | John Descano | 14 | Son | — | Penna |
| 15 | Anthony Fabello | 34 | Boarder | Gardener | Italy |
| 17 | Frank Donnelly | 39 | Head | Laborer | Penna |
| 18 | Bridget Donnelly | 38 | Wife | — | England |
| 19 | Frankie Donnelly | 14 | Son | — | Penna |
| 20 | James Donnelly | 11 | Son | — | Penna |
| 21 | Mary Donnelly THIS PERSON | 9 | Daughter | — | Penna |
| 22 | Elizabeth Donnelly | 5 | Daughter | — | Penna |
| 23 | Theresa Donnelly | 2 | Daughter | — | Penna |
| 25 | Charles Ball | 51 | Head | Carpenter | Penna |
| 26 | Margaret Ball | 47 | Wife | — | Virginia |
| 27 | Harold Ball | 22 | Son | Novelty Business | Penna |
| 28 | Dorothy Ball | 10 | Daughter | — | Penna |
| 29 | Arthur Ball | 61 | Brother | — | New York |
| 30 | John Hone | 48 | Head | Wood Inspector | Ireland |
| 31 | Martha Hone | 52 | Wife | — | Ireland |
| 32 | Harriet Vaughn | 10 | Niece | — | Penna |
| 33 | Paul Passamonti | 47 | Head | No | Italy |
| 34 | Jennie Passamonti | 39 | Wife | No | Italy |
| 35 | Josephine Passamonti | 18 | Daughter | — | Penna |
| 36 | Mary Passamonti | 16 | Daughter | — | Penna |
| 37 | Nicholas Passamonti | 12 | Son | — | Penna |
| 38 | Anna Passamonti | 9 | Daughter | — | Penna |
| 39 | Marcelinus Dilisio | 51 | Head | Yes | Italy |
| 40 | Benedicta Dilisio | 52 | Wife | No | Italy |
| 41 | Albert Dilisio | 23 | Son | Yes | Italy |
| 42 | Dominic Appolonia | 62 | Head | No | Italy |
| 43 | Filomena Appolonia | 50 | Wife | No | Italy |
| 44 | Anthony Appolonia | 29 | Son | Carpenter | Penna |
| 45 | Michael Appolonia | 24 | Son | Laborer | Penna |
| 46 | Mary Appolonia | 22 | Daughter | — | Penna |
| 47 | Mary Appolonia | 2 | Granddaughter | — | Penna |
| 48 | Joseph Appolonia | 18 | Son | — | Penna |
| 49 | Frank Palladini | 57 | Head | Yes | Italy |
| 50 | Candy Palladini | 57 | Wife | No | Italy |
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)