JD
John Donaldson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this John Donaldson across the 1920 and 1930 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 7-person household.
Age 19
b. ~1911
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Donaldson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Building Const. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1911 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Matthew Donaldson | Son | — | 15 | ~1915 |
| Jane Donaldson | Spouse | — | 46 | ~1884 |
| John Donaldson | Son | — | 19 | ~1911 |
| Thomas Donaldson | Son | — | 18 | ~1912 |
| James Donaldson | Son | — | 12 | ~1918 |
| Thomas Donaldson | Head | — | 45 | ~1885 |
| Jane Donaldson | Daughter | — | 6 | ~1924 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 8
Philadelphia, Pennsylvania · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donaldson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 19
Philadelphia, Pennsylvania · implied b. ~1911 — 7 household members
| Surname | Donaldson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | Building Const. |
| Class of Worker | W |
| 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 John Donaldson across 2 US Census years (1920 and 1930) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
John Donaldson
Son · 1930 · age 19 · b. ~1911 · Pennsylvania
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Sibling
Jane Donaldson
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Donaldson
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Donaldson
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Donaldson
Sibling · 1930 · age 12
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
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2140:0147)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Robinson | 40 | Head | Manager | Roumania |
| 2 | Dora Robinson | 38 | Wife | — | Austria |
| 3 | Bertha B. Robinson | 19 | Daughter | Bookkeeper | Pennsylvania |
| 4 | Rose M. Robinson | 17 | Daughter | Clerk Filo | Pennsylvania |
| 5 | Sylvia S. Robinson | 14 | Daughter | — | Pennsylvania |
| 6 | Gladys Robinson | 10 | Daughter | — | Pennsylvania |
| 7 | Irwin E. Robinson | 2 | Son | — | Pennsylvania |
| 8 | George Oberlies | 55 | Head | Bill Clerk | Pennsylvania |
| 9 | Annie Oberlies | 66 | Wife | — | England |
| 10 | James P. Mealiff | 39 | Head | Chauffeur | Irish Free State |
| 11 | Winifred R. Mealiff | 35 | Wife | — | Irish Free State |
| 12 | James P. Mealiff | 7 | Son | — | Pennsylvania |
| 13 | Winifred M. Mealiff | 5 | Daughter | — | Pennsylvania |
| 14 | Mary E. Mealiff | 2 | Daughter | — | Pennsylvania |
| 15 | Bertha A. Mealiff | 1 | Daughter | — | Pennsylvania |
| 16 | David Smith | 64 | Head | Machinist | New Jersey |
| 17 | Jennie Smith | 55 | Wife | — | New Jersey |
| 18 | Ditty S. Smith | 22 | Daughter | Stenographer | New Jersey |
| 19 | Frank N. Smith | 17 | Son | — | Pennsylvania |
| 20 | Thomas Donaldson | 45 | Head | Stone Setter | Scotland |
| 21 | Jane G. Donaldson | 46 | Wife | — | Scotland |
| 22 | John Donaldson THIS PERSON | 19 | Son | Laborer | Pennsylvania |
| 23 | Thomas Donaldson | 18 | Son | Helper | Pennsylvania |
| 24 | Matthew S. Donaldson | 15 | Son | — | Pennsylvania |
| 25 | James Donaldson | 12 | Son | — | Pennsylvania |
| 26 | Jane G. Donaldson | 6 | Daughter | — | Pennsylvania |
| 27 | Frank Appelstein | 62 | Head | Tailor | Russia |
| 28 | Esther Appelstein | 61 | Wife | — | Russia |
| 29 | Eva Appelstein | 30 | Daughter | Operator | Pennsylvania |
| 30 | Florence Appelstein | 21 | Daughter | Secretary | Pennsylvania |
| 31 | Bertha S. Appelstein | 18 | Daughter | Bookkeeper | Pennsylvania |
| 32 | Louis Appelstein | 28 | Son | Tire Salesman | Pennsylvania |
| 33 | Pauline Appelstein | 25 | Daughter-in-law | — | Sweden |
| 34 | Herbert Appelstein | 1 | Grandson | — | Pennsylvania |
| 35 | Bessie Jacobson | 31 | Daughter | Dressmaker | Russia |
| 36 | Sophie Jacobson | 10 | Granddaughter | — | Pennsylvania |
| 37 | Lydia C. Kirshbaum | 60 | Head | Saleswoman | Pennsylvania |
| 38 | Edna L. Kirshbaum | 32 | Daughter | Stenographer | Pennsylvania |
| 39 | — | None | — | — | — |
| 40 | — | None | — | — | — |
| 41 | — | None | — | — | — |
| 42 | — | None | — | — | — |
| 43 | — | None | — | — | — |
| 44 | — | None | — | — | — |
| 45 | — | None | — | — | — |
| 46 | — | None | — | — | — |
| 47 | — | None | — | — | — |
| 48 | — | None | — | — | — |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
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)