DJ
Dorothy Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Dorothy Johnson across the 1910, 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed), with identified parents Charles & William — first a daughter (b.~1909), then head of a 4-person household.
Age 21
b. ~1909
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Johnson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Stenog. |
| Industry | Insurance Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Stenog. |
| Township / Ward | Aspinwall Borough Pt |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Edith Johnson | Daughter | — | 27 | ~1903 |
| Dorothy Johnson | Daughter | — | 21 | ~1909 |
| Charles Johnson | Head | — | 53 | ~1877 |
| Minnie Johnson | Other | — | 53 | ~1877 |
Census Appearances
1910
Allegheny, Pennsylvania
Daughter, age 2
Allegheny, Pennsylvania · implied b. ~1908 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Dorothy |
| 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
Allegheny, Pennsylvania
Daughter, age 12
Allegheny, Pennsylvania · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Dorothy |
| 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
Allegheny, Pennsylvania
Daughter, age 21
Allegheny, Pennsylvania · implied b. ~1909 — 4 household members
| Surname | Johnson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Stenog. |
| Industry | Insurance Office |
| 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 Dorothy Johnson across 3 US Census years (1910, 1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage. Identified parents: father Charles Johnson (~0.92 confidence) and father William Johnson (~0.92 confidence) and mother Mary Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Johnson
b. ~1877
Source father
● Household
· direct · ~0.92
Father
William Johnson
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Johnson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Johnson
Daughter · 1930 · age 21 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
Edith Johnson
Sibling · 1930 · age 27
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 — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1959:0832)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Margaret J. Grier | 53 | Sister-in-law | Instructor | Pennsylvania |
| 52 | Ethel Grier | 23 | Servant | Servant | Pennsylvania |
| 53 | Harry E. Le Fever | 52 | Head | Contractor | Pennsylvania |
| 54 | Lott Le Fever | 48 | Wife-H | — | Pennsylvania |
| 55 | Harry R. Calder | 41 | Head | — | Pennsylvania |
| 56 | Anna L. Calder | 42 | Wife-H | — | Pennsylvania |
| 57 | Carl Van Gorder | 28 | Head | Janitor | Pennsylvania |
| 58 | Kathryn Van Gorder | 37 | Daughter | Teacher | Pennsylvania |
| 59 | Eva Van Gorder | 28 | Daughter | Clerk-Office | Pennsylvania |
| 60 | Marjorie Griffith | 27 | Cousin | Typist-Office | Pennsylvania |
| 61 | Patricia A. Griffith | 1 | Cousin | — | Pennsylvania |
| 62 | Mabel Mezogney | 60 | Servant | Housekeeper | Pennsylvania |
| 63 | John E. D. Gaylord | 39 | Head | Asst. Master Mech. | Illinois |
| 64 | Charlotte W. Gaylord | 35 | Wife-H | — | Illinois |
| 65 | John Gaylord | 5 | Son | — | Pennsylvania |
| 66 | Gertrude M. Wagner | None | Sister-in-law | Secretary | Illinois |
| 67 | Charles L. Johnson | 53 | Head | Asst. Cashier-Office | Pennsylvania |
| 68 | Minnie Johnson | 53 | Wife-H | — | Pennsylvania |
| 69 | Edith Johnson | 27 | Daughter | Typist | Pennsylvania |
| 70 | Dorothy Johnson THIS PERSON | 21 | Daughter | Stenog. | Pennsylvania |
| 71 | Albert G. Ingram | 42 | Head | Safety Engineer | Pennsylvania |
| 72 | Cynthia H. Ingram | 46 | Wife-H | — | Pennsylvania |
| 73 | Robert H. Ingram | 17 | Son | — | Pennsylvania |
| 74 | Margaret Ingram | 14 | Daughter | — | Pennsylvania |
| 75 | Albert G. Ingram | 10 | Son | — | Pennsylvania |
| 76 | Robert H. Hazlett | 73 | Father-in-law | — | Pennsylvania |
| 77 | Elizabeth Hazlett | 71 | Mother-in-law | — | Pennsylvania |
| 78 | Charles W. Zepper | 53 | Head | Purchasing Agent | Pennsylvania |
| 79 | Elizabeth H. Zepper | 52 | Wife-H | — | Pennsylvania |
| 80 | Charles W. Jr. Zepper | 26 | Son | Commercial Traveler | Pennsylvania |
| 81 | Robert H. Zepper | 21 | Son | Commercial Artist | Pennsylvania |
| 82 | Charles E. Jones | 59 | Head | Tester | Wales |
| 83 | Edna Jones | 44 | Wife-H | — | Pennsylvania |
| 84 | Wilson F. Jones | 20 | Son | Musician | Pennsylvania |
| 85 | Alice C. Jones | 55 | Sister | Clerk-Office | Pennsylvania |
| 86 | Elizabeth W. Jones | 66 | Sister | — | Pennsylvania |
| 87 | Frederick J. Ecker | 60 | Head | Clerk-Office | Missouri |
| 88 | Mary E. Ecker | 59 | Wife-H | — | Pennsylvania |
| 89 | Mary E. Ecker | 30 | Daughter | — | Pennsylvania |
| 90 | Frederick J. Jr. Ecker | 21 | Son | Clerk-Office | Pennsylvania |
| 91 | Lorraine H. Paul | 41 | Son-in-law | Draftsman | Pennsylvania |
| 92 | William C. Bulmer | 45 | Head | Salesman | Pennsylvania |
| 93 | Helen J. Bulmer | 43 | Wife-H | — | Michigan |
| 94 | Don W. Bulmer | 19 | Son | — | Ohio |
| 95 | Margaret J. Bulmer | 15 | Daughter | — | Ohio |
| 96 | Malcolm W. Bulmer | 9 | Son | — | Ohio |
| 97 | Mary Joyce | 24 | Servant | Servant | Northern Ireland |
| 98 | Anthony L. Lafender | 39 | Head | Laborer | Pennsylvania |
| 99 | Helen M. Lafender | 37 | Wife-H | — | Pennsylvania |
| 100 | Walter M. Lafender | 12 | Son | — | Pennsylvania |
Pedigree Summary
Dorothy + 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)