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John Shaffer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Shaffer across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 2-person household.
Age 72
b. ~1868
Male
Head
Born: Germany
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Shaffer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Germany |
| 1935 Residence (City) | McKeesport City |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Mckeesport City |
| Est. Birth Year | ~1868 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Julia Shaffer | Daughter | — | 34 | ~1906 |
| John Shaffer | Head | — | 72 | ~1868 |
Census Appearances
1920
Allegheny, Pennsylvania
Other, age 52
Allegheny, Pennsylvania · implied b. ~1868 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Saffer |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1874 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Laborer |
| Industry | Rolling mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Year of Naturalization | 1880 |
| Birthplace (normalized) | germany |
1930
Allegheny, Pennsylvania
Other, age 63
Allegheny, Pennsylvania · implied b. ~1867 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Saffer |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1870 |
| Age at First Marriage | 40 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Laborer |
| Industry | Pipe mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Veteran | No |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Allegheny-County, Pennsylvania
Head, age 72
Allegheny-County, Pennsylvania · implied b. ~1868 — 2 household members
| Surname | Shaffer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Germany |
| 1935 Residence (City) | McKeesport City |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Shaffer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Shaffer
Head · 1940 · age 72 · b. ~1868 · Pennsylvania
★ You are viewing this record
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
39 people indexed on this census page (nara:1940:m-t0627-03408-00581)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Katie Pishko | 54 | Wife | — | Austria |
| 2 | Helen Englert | 26 | Step-daughter | Office Work | Penna |
| 3 | John Pishko | 24 | Step-son | Laborer | Penna |
| 4 | Peter Pishko | 22 | Step-son | Salesman | Penna |
| 5 | Julian Pishko | 26 | Son | — | Penna |
| 6 | Joseph Hovancz | 36 | Head | Laborer | Penna |
| 7 | Josephine Hovancz | 32 | Wife | — | Penna |
| 8 | Margaret Mynard | 53 | Head | — | Penna |
| 9 | Catherine Greff | 83 | Mother | — | Germany |
| 10 | Michael Greff | 56 | Son | Steel | Penna |
| 11 | Kenneth Raskin | 24 | Head | Laborer | Penna |
| 12 | Catherine Raskin | 26 | Wife | — | Penna |
| 13 | Joseph Shaffer | 38 | Head | Inspector | Penna |
| 14 | Jean Shaffer | 34 | Wife | — | Penna |
| 15 | John Shaffer THIS PERSON | 72 | Head | — | Germany |
| 16 | Julia Shaffer | 34 | Daughter | — | Penna |
| 17 | Joseph Somersky | 48 | Head | Burner | Penna |
| 18 | Margaret Somersky | 48 | Wife | — | Penna |
| 19 | Margaret M. Somersky | 22 | Daughter | — | Penna |
| 20 | James Somersky | 21 | Son | Laborer | Penna |
| 21 | Rose Somersky | 18 | Daughter | — | Penna |
| 22 | John Somersky | 16 | Son | Steel | Penna |
| 23 | John Hornak | 47 | Head | Laborer | Czechoslovakia |
| 24 | Julia Hornak | 45 | Wife | — | Czechoslovakia |
| 25 | Alice Hornak | 22 | Daughter | Nurses Aide | Penna |
| 26 | John Hornak | 21 | Son | Laborer | Penna |
| 27 | Mary Hornak | 19 | Daughter | — | Penna |
| 28 | Henry J. Burke | 35 | Head | Bricklayer | Penna |
| 29 | Helen Burke | 34 | Wife | — | Penna |
| 30 | Henry James Burke | 1 | Son | — | Penna |
| 31 | Anita Louise Burke | 0 | Daughter | — | Penna |
| 32 | Steve Olinski | 44 | Head | Bus Man | Penna |
| 33 | Elizabeth Olinski | 42 | Wife | — | Austria |
| 34 | Edward Olinski | 21 | Son | Helper | Penna |
| 35 | Eugene Olinski | 19 | Son | Hat Cleaner | Penna |
| 36 | Betty Jane Olinski | 14 | Daughter | — | Penna |
| 37 | Mary Prokoda | 87 | Mother | — | Austria |
| 38 | Albert Bentley | 40 | Head | Craneman | Penna |
| 39 | Laura Bentley | 23 | Wife | — | Penna |
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)