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William Donnelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this William Donnelly across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 5-person household.
Age 14
b. ~1926
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Highest Grade | H 1 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Phila |
| Est. Birth Year | ~1926 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Donnelly | Son | — | 14 | ~1926 |
| John Donnelly | Head | — | 45 | ~1895 |
| Mary Donnelly | Spouse | — | 43 | ~1897 |
| Mary Donnelly | Daughter | — | 9 | ~1931 |
| John Donnelly | Son | — | 16 | ~1924 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 4
Philadelphia, Pennsylvania · implied b. ~1926 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| 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 |
1940
Philadelphia-County, Pennsylvania
Son, age 14
Philadelphia-County, Pennsylvania · implied b. ~1926 — 5 household members
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Philadelphia |
| Highest Grade | H 1 |
| 1935 Residence | Same house |
| 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 William Donnelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Donnelly
Son · 1940 · age 14 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
Mary Donnelly
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Donnelly
Sibling · 1940 · age 16
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
40 people indexed on this census page (nara:1940:m-t0627-03701-00483)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Barbara Morasco | 11 | Daughter | — | Pennsylvania |
| 2 | Jean Morasco | 9 | Daughter | — | Pennsylvania |
| 3 | Francis Morasco | 8 | Son | — | Pennsylvania |
| 4 | Lois Morasco | 7 | Daughter | — | Pennsylvania |
| 5 | Louis Morasco | 3 | Son | — | Pennsylvania |
| 6 | Thomas H Shaw | 51 | Head | Chauffeur | Ireland |
| 7 | Nellie Shaw | 43 | Wife | Housewife | Ireland |
| 8 | Thomas H Shaw | 22 | Son | Radio Work | Pennsylvania |
| 9 | John Shaw | 21 | Son | Art Teacher | Pennsylvania |
| 10 | William Shaw | 20 | Son | Typist | Pennsylvania |
| 11 | Catherine Shaw | 18 | Daughter | — | Pennsylvania |
| 12 | John Donnelly | 45 | Head | Sheet Metal Wkr | Pennsylvania |
| 13 | Mary E Donnelly | 43 | Wife | Housewife | Pennsylvania |
| 14 | John Donnelly | 16 | Son | — | Pennsylvania |
| 15 | William Donnelly THIS PERSON | 14 | Son | — | Pennsylvania |
| 16 | Mary Donnelly | 9 | Daughter | — | Pennsylvania |
| 17 | Wm A Doyle | 62 | Head | Fireman | Pennsylvania |
| 18 | Mary E Doyle | 47 | Wife | Housewife | Pennsylvania |
| 19 | Wm Jr Doyle | 20 | Son | Apprentice | Pennsylvania |
| 20 | Robert Jarvie | 43 | Head | Chauffeur | Scotland |
| 21 | Jean Jarvie | 47 | Wife | Housewife | England |
| 22 | James Jarvie | 15 | Son | — | Pennsylvania |
| 23 | Jean Jarvie | 11 | Daughter | — | Pennsylvania |
| 24 | End Of Block 26 | None | — | — | — |
| 25 | Arthur Macdonald | 63 | Head | Housewife | Ireland |
| 26 | Catherine Macdonald | 32 | Daughter | Sales | Pennsylvania |
| 27 | Joseph Macdonald | 31 | Son | Chauffeur | Pennsylvania |
| 28 | Marguerite Macdonald | 27 | Daughter | Clerk | Pennsylvania |
| 29 | Josephine Macdonald | 24 | Daughter | Masseuse | Pennsylvania |
| 30 | Florence Macdonald | 20 | Daughter | Clerical | Pennsylvania |
| 31 | Dorothy M Allen | 28 | Daughter | Waitress | Pennsylvania |
| 32 | Frances Marie Allen | 7 | Granddaughter | — | Pennsylvania |
| 33 | William Lafferty | 46 | Head | Gardner | Ireland |
| 34 | Catherine Lafferty | 45 | Wife | Housewife | Ireland |
| 35 | Marie E Lafferty | 15 | Daughter | — | Pennsylvania |
| 36 | Helen Lafferty | 14 | Daughter | — | Pennsylvania |
| 37 | Bernard J Lafferty | 12 | Son | — | Pennsylvania |
| 38 | Nellie Connor | 54 | Head | Housewife | Ireland |
| 39 | James Connor | 30 | Son | Gardner | Pennsylvania |
| 40 | Joseph Connor | 28 | Son | Gardner | Pennsylvania |
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)