JH
John Heller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Heller across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Heller |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Clerk |
| Industry | Public Utilities Gas Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1919 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Myrtle Heller | Spouse | — | 50 | ~1890 |
| John Heller | Son | — | 21 | ~1919 |
| Margaret Heller | Daughter | — | 18 | ~1922 |
| Mary Heller | Daughter | — | 16 | ~1924 |
| Edward Heller | Son | — | 13 | ~1927 |
| Albert Heller | Head | — | 57 | ~1883 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 11
Allegheny, Pennsylvania · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Heller |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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
Son, age 21
Allegheny-County, Pennsylvania · implied b. ~1919 — 6 household members
| Surname | Heller |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | Clerk |
| Industry | Public Utilities Gas Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| 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 John Heller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Heller
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
Margaret Heller
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Heller
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Heller
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-t0627-03668-00588)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Calabria | 81 | Father | — | Italy |
| 2 | James Calabria | 30 | Son | Clerk | Pennsylvania |
| 3 | Henry L. Griffin | 37 | Head | — | Pennsylvania |
| 4 | Gerald P. Griffin | 15 | Son | — | Pennsylvania |
| 5 | Rose A. Griffin | 12 | Daughter | — | Pennsylvania |
| 6 | Margaret Redmond | 38 | Daughter | — | Pennsylvania |
| 7 | William Redmond | 18 | Son | Laborer | Pennsylvania |
| 8 | Rose Ann Redmond | 15 | Daughter | — | Pennsylvania |
| 9 | Albert Heller | 57 | Head | City Police Lieutenant | Pennsylvania |
| 10 | Myrtle Heller | 50 | Wife | — | Pennsylvania |
| 11 | John Heller THIS PERSON | 21 | Son | Clerk | Pennsylvania |
| 12 | Margaret E. Heller | 18 | Daughter | — | Pennsylvania |
| 13 | Mary C. Heller | 16 | Daughter | — | Pennsylvania |
| 14 | Edward Heller | 13 | Son | — | Pennsylvania |
| 15 | Howard Balzer | 27 | Head | Checker | Pennsylvania |
| 16 | Ruth Balzer | 24 | Wife | — | Pennsylvania |
| 17 | Albert Balzer | 3 | Son | — | Pennsylvania |
| 18 | Jean Balzer | 1 | Daughter | — | Pennsylvania |
| 19 | John La Mantia | 38 | Head | Butcher | Pennsylvania |
| 20 | Gertrude La Mantia | 35 | Wife | — | Pennsylvania |
| 21 | Henry Brick | 52 | Head | Mechanic | Pennsylvania |
| 22 | Thomas Brick | 30 | Son | Technician | Pennsylvania |
| 23 | Michael Mcandrew | 55 | Head | Mechanic | Eire |
| 24 | Catherine Mcandrew | 56 | Wife | — | Pennsylvania |
| 25 | Mary B. Mcandrew | 17 | Daughter | — | Pennsylvania |
| 26 | Stanley Codori | 33 | Head | Painter Paper-Hanger | Pennsylvania |
| 27 | Marie Codori | 29 | Wife | — | Pennsylvania |
| 28 | Harry A. Otto | 56 | Head | Mechanical Engineer | Pennsylvania |
| 29 | Henrietta Otto | 55 | Wife | — | Wisconsin |
| 30 | Fred Otto | 26 | Son | New Worker | Pennsylvania |
| 31 | Edgar Otto | 23 | Son | Engineering | Pennsylvania |
| 32 | Albert Otto | 16 | Son | — | Pennsylvania |
| 33 | Sophie Heidenreich | 65 | Head | — | Germany |
| 34 | Walter Guenther | 55 | Head | Salesman | Pennsylvania |
| 35 | Helen Guenther | 54 | Wife | — | Scotland |
| 36 | Paul Medis | 33 | Head | Carpenter | W. Virginia |
| 37 | Geraldine Medis | 31 | Wife | — | W. Virginia |
| 38 | Paul Medis | 8 | Son | — | Akron |
| 39 | Nancy Anne Medis | 4 | Daughter | — | Akron |
| 40 | Jennie Milton | 52 | Head | — | 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)