JL
John Lang — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Lang across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 3-person household.
Age 65
b. ~1875
Male
Head
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Lang |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1875 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Lang | Head | — | 65 | ~1875 |
| Ambrose Lang | Son | — | 30 | ~1910 |
| Mary Lang | Spouse | — | 65 | ~1875 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 43
Allegheny, Pennsylvania · implied b. ~1877 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lang |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Hotel |
| Industry | Proprietor |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Year of Naturalization | R |
| Birthplace (normalized) | germany |
1930
Allegheny, Pennsylvania
Head, age 55
Allegheny, Pennsylvania · implied b. ~1875 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lang |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1893 |
| Age at First Marriage | 23 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Laborer |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Allegheny-County, Pennsylvania
Head, age 65
Allegheny-County, Pennsylvania · implied b. ~1875 — 3 household members
| Surname | Lang |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Lang across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lang
Head · 1940 · age 65 · b. ~1875 · 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-t0627-03671-00035)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Stephen Finger | 33 | Head | Pickleworker | Austria |
| 42 | Margaret Finger | 31 | Wife | — | Pennsylvania |
| 43 | Mildred Finger | 5 | Daughter | — | Pennsylvania |
| 44 | James F. Finegan | 58 | Uncle | Asst Pit Foreman | Illinois |
| 45 | John K. Potter | 21 | Head | Clerk | Pennsylvania |
| 46 | Patricia Potter | 15 | Wife | — | Pennsylvania |
| 47 | Joe H. Kutchback | 58 | Head | Laundry Delivery | Pennsylvania |
| 48 | Anna Kutchback | 48 | Wife | — | Pennsylvania |
| 49 | Joe E. Kutchback | 18 | Son | New Worker | Pennsylvania |
| 50 | Patrick W. Kutchback | 16 | Son | — | Pennsylvania |
| 51 | Anne L. Horn | 29 | Daughter | — | Pennsylvania |
| 52 | Laverne M. Garver | 28 | Daughter | — | Pennsylvania |
| 53 | Elizabeth C. Eisenreich | 27 | Daughter | — | Pennsylvania |
| 54 | Margaret Kenny | 25 | Daughter | — | Pennsylvania |
| 55 | Arthur W. Petzer | 40 | Head | Mill Wright | Pennsylvania |
| 56 | Helen Petzer | 36 | Wife | — | Pennsylvania |
| 57 | Arthur Petzer | 17 | Son | New Worker | Pennsylvania |
| 58 | Geraldine Petzer | 12 | Daughter | — | Pennsylvania |
| 59 | Chas Ostk | 46 | Head | Laborer | Pennsylvania |
| 60 | Clarence Ostk | 40 | Brother | Laborer | Pennsylvania |
| 61 | Lawrence Ostk | 38 | Brother | Laborer | Pennsylvania |
| 62 | Callie Ostk | 72 | Aunt | — | Pennsylvania |
| 63 | Thomas L. Hunt | 37 | Head | Salesman | Pennsylvania |
| 64 | Lillie E. Hunt | 39 | Wife | — | Pennsylvania |
| 65 | Lula B. Hunt | 65 | Mother | — | Pennsylvania |
| 66 | Martha Schreppermann | 40 | Head | — | Pennsylvania |
| 67 | Elsa Schreppermann | 45 | Sister | Sales Clerk | Pennsylvania |
| 68 | Frank J. Katz | 29 | Head | Pressman | Pennsylvania |
| 69 | Anna Katz | 28 | Wife | — | Pennsylvania |
| 70 | John Lang THIS PERSON | 65 | Head | — | Germany |
| 71 | Mary Lang | 65 | Wife | — | Germany |
| 72 | Ambrose Lang | 30 | Son | Truck Driver | Pennsylvania |
| 73 | James Reid | 63 | Head | — | Pennsylvania |
| 74 | Elizabeth Reid | 70 | Wife | — | Pennsylvania |
| 75 | Anna Reid | 37 | Daughter | Stenographer | Pennsylvania |
| 76 | James M. Wolfe | 41 | Head | Plumber | Pennsylvania |
| 77 | Jane Wolfe | 45 | Wife | — | Pennsylvania |
| 78 | Little Wm Wolfe | 47 | Son | Carpenter | Pennsylvania |
| 79 | John Stein | 46 | Head | Order Clerk | Austria |
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)