JF
John Fischer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Fischer across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 7-person household.
Age 73
b. ~1867
Male
Head
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Fischer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Mt Lebanon |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Mt Lebanon |
| Est. Birth Year | ~1867 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Anna Grimenstein | Daughter | — | 40 | ~1900 |
| John Fischer | Head | — | 73 | ~1867 |
| Albert Grimenstein | Other | — | 13 | ~1927 |
| Katherine Grimenstein | Other | — | 15 | ~1925 |
| Albert Grimenstein | Other | — | 47 | ~1893 |
| John Grimenstein | Other | — | 19 | ~1921 |
| Katherine Fischer | Spouse | — | 78 | ~1862 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 50
Allegheny, Pennsylvania · implied b. ~1870 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Germany |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Janitor |
| Industry | Town Hall |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1930
Allegheny, Pennsylvania
Head, age 63
Allegheny, Pennsylvania · implied b. ~1867 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1886 |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Clerk |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 15000 |
| Radio Set | R |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Allegheny-County, Pennsylvania
Head, age 73
Allegheny-County, Pennsylvania · implied b. ~1867 — 7 household members
| Surname | Fischer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Mt Lebanon |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | 7 |
| 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 Fischer 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 Fischer
Head · 1940 · age 73 · b. ~1867 · Pennsylvania
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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-t0627-03411-00452)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John E Sullivan | 50 | Head | Superintendent | Massachusetts |
| 2 | Catherine Sullivan | 49 | Wife | — | Pennsylvania |
| 3 | Catherine Sullivan | 14 | Daughter | — | Pennsylvania |
| 4 | John Sullivan | 8 | Son | — | Pennsylvania |
| 5 | W. W. Sunshine | 37 | Head | Ass'T Manager | Pennsylvania |
| 6 | Lillian Sunshine | 33 | Wife | — | Pennsylvania |
| 7 | Wm A Sunshine | 9 | Son | — | Pennsylvania |
| 8 | Geo Barkinger | 45 | Head | Commission Merchant | Pennsylvania |
| 9 | Jane Barkinger | 31 | Wife | — | Pennsylvania |
| 10 | Geo Barkinger | 10 | Son | — | Pennsylvania |
| 11 | Jane Barkinger | 7 | Daughter | — | Pennsylvania |
| 12 | Jos. A Spoerlein | 55 | Head | Auditor | Pennsylvania |
| 13 | Anna M Spoerlein | 50 | Wife | — | Pennsylvania |
| 14 | Joseph A Spoerlein | 23 | Son | Chemist | Pennsylvania |
| 15 | Mary Anne Spoerlein | 14 | Daughter | — | Pennsylvania |
| 16 | Norman Teller | 24 | Son-in-law | Welder | Pennsylvania |
| 17 | Martha Teller | 25 | Daughter | — | Pennsylvania |
| 18 | Infant Teller | 0 | Grandson | 0 | Pennsylvania |
| 19 | John Fischer THIS PERSON | 73 | Head | — | Germany |
| 20 | Katherine Fischer | 78 | Wife | — | Germany |
| 21 | Albert Grimenstein | 47 | Son-in-law | Rat Cleaner | Pennsylvania |
| 22 | Anna Grimenstein | 40 | Daughter | — | Pennsylvania |
| 23 | John Grimenstein | 19 | Grandson | Usher | Pennsylvania |
| 24 | Katherine Grimenstein | 15 | Granddaughter | — | Pennsylvania |
| 25 | Albert Grimenstein | 13 | Grandson | — | Pennsylvania |
| 26 | Walter E Latt | 53 | Head | Electrical Engineer | Pennsylvania |
| 27 | Mary Latt | 46 | Wife | — | Illinois |
| 28 | Wm H Sunderman | 50 | Lodger | Salesman | Pennsylvania |
| 29 | Pete J Paulas | 54 | Head | Waiter | Greece |
| 30 | Gertrude Paulas | 42 | Wife | — | Pennsylvania |
| 31 | James Paulas | 17 | Son | — | Pennsylvania |
| 32 | Norman Worcester | 40 | Roomer | Accountant | Pennsylvania |
| 33 | Paul Sarandos | 48 | Head | Waiter | Greece |
| 34 | Martha Sarandos | 34 | Wife | — | Germany |
| 35 | George Sarandos | 3 | Son | 0 | Pennsylvania |
| 36 | Jeanette Sarandos | 0 | Daughter | 0 | Pennsylvania |
| 37 | Harold L Stewart | 28 | Lodger | Salesman | Pennsylvania |
| 38 | Martha Stewart | 24 | Lodger | Saleslady | Pennsylvania |
| 39 | John Pattison | 77 | Head | — | England |
| 40 | Gerard Ginger | 42 | In-law | Moving Picture Operator | 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)