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Alice Johnston — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Alice Johnston across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents David & Guy — first a daughter (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Johnston |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | McKeesport City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Clerk |
| Industry | St. Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Mckeesport City |
| Est. Birth Year | ~1916 |
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 1940 census.
| Name | Relation to head | Relative to Alice | Age | Birth yr |
|---|---|---|---|---|
| Elaine Johnston | Daughter | — | 15 | ~1925 |
| Julia Johnston | Spouse | — | 40 | ~1900 |
| Dania Johnston | Son | — | 13 | ~1927 |
| David Johnston | Head | — | 40 | ~1900 |
| Alice Johnston | Daughter | — | 24 | ~1916 |
| Gilbert Johnston | Son | — | 20 | ~1920 |
| John Johnston | Son | — | 17 | ~1923 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 3
Allegheny, Pennsylvania · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Speaks English | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 13
Allegheny, Pennsylvania · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| 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
Allegheny-County, Pennsylvania
Daughter, age 24
Allegheny-County, Pennsylvania · implied b. ~1916 — 7 household members
| Surname | Johnston |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | McKeesport City |
| 1935 Residence (County) | Allegheny |
| Occupation | Clerk |
| Industry | St. Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Alice Johnston across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Johnston (~0.92 confidence) and father Guy Johnston (~0.92 confidence) and mother Edda Johnston (~0.92 confidence) and mother Julia Johnston (~0.92 confidence) and mother Mary Johnston (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Johnston
b. ~1900
Source father
● Household
· direct · ~0.92
Father
Guy Johnston
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Edda Johnston
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Julia Johnston
b. ~1900
Source mother
● Household
· direct · ~0.92
Mother
Mary Johnston
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alice Johnston
Daughter · 1940 · age 24 · b. ~1916 · Pennsylvania
★ You are viewing this record
Sibling
John Johnston
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gilbert Johnston
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elaine Johnston
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dania Johnston
Sibling · 1940 · age 13
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03408-00217)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alberta Ondrey | 5 | Daughter | — | Pennsylvania |
| 42 | Albert Ondrey | 1 | Son | — | Pennsylvania |
| 43 | Frank Reglus | 32 | Head | Housework | Austria |
| 44 | Dorothy Reglus | 10 | Daughter | — | Pennsylvania |
| 45 | Margaret Reglus | 9 | Daughter | — | Pennsylvania |
| 46 | Robert Reglus | 6 | Son | — | Pennsylvania |
| 47 | Anna D. Reglus | 65 | Mother-in-law | — | Austria |
| 48 | John D. Gresalsky | 52 | Head | Laborer | Austria |
| 49 | Sophia Gresalsky | 52 | Wife | Housewife | Austria |
| 50 | Betty Gresalsky | 15 | Daughter | — | Pennsylvania |
| 51 | Alex Gresalsky | 13 | Daughter | — | Pennsylvania |
| 52 | Andy Gresalsky | 11 | Son | — | Pennsylvania |
| 53 | Johnny Gresalsky | 9 | Son | — | Pennsylvania |
| 54 | Joseph D. Hayes | 29 | Head | Laborer | Pennsylvania |
| 55 | Madeline Hayes | 24 | Wife | Housewife | Pennsylvania |
| 56 | James Hayes | 5 | Son | — | Pennsylvania |
| 57 | Beverly Hayes | 3 | Daughter | — | Pennsylvania |
| 58 | Mary Ann Hayes | 1 | Daughter | — | Pennsylvania |
| 59 | David D. Johnston | 40 | Head | Laborer | Pennsylvania |
| 60 | Julia Johnston | 40 | Wife | Housewife | Austria |
| 61 | Alice Johnston THIS PERSON | 24 | Daughter | Clerk | Pennsylvania |
| 62 | Gilbert Johnston | 20 | Son | Messenger | Pennsylvania |
| 63 | John Johnston | 17 | Son | Laborer | Pennsylvania |
| 64 | Elaine Johnston | 15 | Daughter | — | Pennsylvania |
| 65 | Dania Johnston | 13 | Son | — | Pennsylvania |
| 66 | David Gray | 59 | Head | Laborer | Pennsylvania |
| 67 | Lucy D. Gray | 58 | Wife | Housewife | Pennsylvania |
| 68 | Malia Gray | 15 | Daughter | — | Pennsylvania |
| 69 | Felix D. Filipowski | 45 | Head | Laborer | Poland |
| 70 | Mary Filipowski | 55 | Wife | Housewife | New Jersey |
| 71 | Helen Filipowski | 16 | Daughter | — | New Jersey |
| 72 | Eugenia Filipowski | 14 | Daughter | — | New Jersey |
| 73 | Henry Filipowski | 11 | Son | — | New Jersey |
| 74 | — | None | Head | — | — |
| 75 | Anthony D. Kania | 51 | Head | Laborer | Pennsylvania |
| 76 | Helen Kania | 51 | Wife | Housewife | Pennsylvania |
| 77 | Joseph Kacek | 59 | Head | Laborer | Pennsylvania |
| 78 | Julia Kacek | 50 | Wife | Housewife | Pennsylvania |
| 79 | Louise Kacek | 20 | Daughter | — | Pennsylvania |
| 80 | Camillo Tabacco | 58 | Head | Laborer | Italy |
Pedigree Summary
Alice + 4 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)