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John Black — 1930 US Census Record
Model Tree available1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this John Black across the 1910, 1920 and 1930 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed), with identified parents Frank & Flora — first a son (b.~1906), then head of a 3-person household.
Age 24
b. ~1906
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Black |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Police |
| Industry | City of Phila. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Police |
| Township / Ward | Philadelphia |
| 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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Florence Black | Daughter | — | 21 | ~1909 |
| Maria Black | Head | — | 43 | ~1887 |
| John Black | Son | — | 24 | ~1906 |
Census Appearances
1910
Philadelphia, Pennsylvania
Other, age 2
Philadelphia, Pennsylvania · implied b. ~1908 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | John |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Son, age 13
Philadelphia, Pennsylvania · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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
Son, age 24
Philadelphia, Pennsylvania · implied b. ~1906 — 3 household members
| Surname | Black |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Police |
| Industry | City of Phila. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| 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 Black across 3 US Census years (1910, 1920 and 1930) in Philadelphia, Pennsylvania, using XGBoost record linkage. Identified parents: father Frank Black (~0.92 confidence) and mother Flora Black (~0.92 confidence) and mother Maria Black (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Black
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Flora Black
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Maria Black
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Black
Son · 1930 · age 24 · b. ~1906 · Pennsylvania
★ You are viewing this record
Sibling
Florence Black
Sibling · 1930 · age 21
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:fifteenthcensus00reel2100:0087)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Bifner | 55 | Head | — | New Jersey |
| 2 | Thomas Bifner | 36 | Son | — | Pennsylvania |
| 3 | Emma Bifner | 38 | Daughter-in-law | Saleswoman | New Jersey |
| 4 | Florence Bifner | 16 | Granddaughter | Packer | Pennsylvania |
| 5 | Isaac Pugh | 49 | Head | Packer | Pennsylvania |
| 6 | Mary Pugh | 45 | Wife | Saleswoman | Pennsylvania |
| 7 | Bridget Gavin | 72 | Mother-in-law | — | Irish Free State |
| 8 | James Smalley | 24 | Head | Driver | Pennsylvania |
| 9 | Elizabeth Smalley | 29 | Wife | Truck Driver | Pennsylvania |
| 10 | Catherine Jones | 69 | Mother-in-law | — | Pennsylvania |
| 11 | William Murphy | 62 | Head | — | Pennsylvania |
| 12 | Anna M. Murphy | 24 | Daughter | Iron Worker | Pennsylvania |
| 13 | Allen G. Lodewick | 50 | Son-in-law | Secretary | New York |
| 14 | Martha G. Lodewick | 26 | Daughter | Saleswoman | Pennsylvania |
| 15 | Martha G. Lodewick | 4 | Granddaughter | — | Pennsylvania |
| 16 | Walter J. Tief | 35 | Head | — | Connecticut |
| 17 | Margaret Tief | 35 | Wife | Ice Lugger | New Jersey |
| 18 | William Nolan | 32 | Head | Bookkeeper | Pennsylvania |
| 19 | Mary Nolan | 32 | Wife | Sawyer | Pennsylvania |
| 20 | William Nolan | 13 | Son | — | Pennsylvania |
| 21 | Mildred Nolan | 11 | Daughter | — | Pennsylvania |
| 22 | Walter Nolan | 8 | Son | — | Pennsylvania |
| 23 | Robert Nolan | 7 | Son | — | Pennsylvania |
| 24 | Joseph Nolan | 4 | Son | — | Pennsylvania |
| 25 | Francis Nolan | 2 | Son | — | Pennsylvania |
| 26 | Howard Bair | 29 | Head | — | Pennsylvania |
| 27 | Serena Bair | 20 | Wife | Printer | Pennsylvania |
| 28 | Howard Jr. Bair | 6 | Son | — | Pennsylvania |
| 29 | Charlotte Bair | 3 | Daughter | — | Pennsylvania |
| 30 | Estella Krumm | 33 | Sister-in-law | — | Pennsylvania |
| 31 | Daniel Kelly | 33 | Head | — | Pennsylvania |
| 32 | Catherine Kelly | 30 | Wife | Machinist | Pennsylvania |
| 33 | Winifred Kelly | 14 | Daughter | — | Pennsylvania |
| 34 | Lillian Kelly | 12 | Daughter | — | Pennsylvania |
| 35 | Daniel Kelly | 10 | Son | — | Pennsylvania |
| 36 | Catherine Kelly | 8 | Daughter | — | Pennsylvania |
| 37 | William Kelly | 4 | Son | — | Pennsylvania |
| 38 | Bert Greene | 26 | Head | — | Vermont |
| 39 | Edith Greene | 28 | Wife | Motorman | Russia |
| 40 | Harry Fetterman | 44 | Head | Operator | Pennsylvania |
| 41 | Mary Fetterman | 48 | Wife | Watchman | Pennsylvania |
| 42 | Florence Fetterman | 11 | Daughter | — | Pennsylvania |
| 43 | Harry Jr. Fetterman | 9 | Son | — | Pennsylvania |
| 44 | Mildred Fetterman | 7 | Daughter | — | Pennsylvania |
| 45 | Thomas Padgett | 28 | Boarder | — | Pennsylvania |
| 46 | Maria Black | 43 | Head | — | Pennsylvania |
| 47 | John Black THIS PERSON | 24 | Son | Police | Pennsylvania |
| 48 | Florence Black | 21 | Daughter | Cleaner | Pennsylvania |
| 49 | James J. Worthington | 21 | Head | Helper | Pennsylvania |
| 50 | Mary J. Worthington | 20 | Wife | Label Girl | Pennsylvania |
Pedigree Summary
John + 1 sibling
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)