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Mary Kuhn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Kuhn across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 10-person household.
Age 49
b. ~1891
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Kuhn |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | H 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1891 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kuhn | Spouse | — | 49 | ~1891 |
| John Kuhn | Son | — | 17 | ~1923 |
| Conrad Kuhn | Son | — | 21 | ~1919 |
| Bernard Kuhn | Son | — | 3 | ~1937 |
| Caroline Kuhn | Daughter | — | 19 | ~1921 |
| Conrad Kuhn | Head | — | 50 | ~1890 |
| Joseph Kuhn | Son | — | 12 | ~1928 |
| Dorothy Kuhn | Daughter | — | 15 | ~1925 |
| Margaret Kuhn | Daughter | — | 24 | ~1916 |
| Mary Kuhn | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Allegheny, Pennsylvania
Other, age 39
Allegheny, Pennsylvania · implied b. ~1891 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kuhn |
| Given Name | Mary |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Nurse |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Spouse, age 49
Allegheny-County, Pennsylvania · implied b. ~1891 — 10 household members
| Surname | Kuhn |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Highest Grade | H 8 |
| 1935 Residence | Same House |
| 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 Mary Kuhn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kuhn
Spouse · 1940 · age 49 · b. ~1891 · 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-t0627-03675-00004)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Simon Hofer | 46 | head | Laborer | Germany |
| 2 | Mary Hofer | 35 | wife | — | France |
| 3 | Mary E. Hofer | 20 | daughter | Assorter | Pennsylvania |
| 4 | Albert Hofer | 17 | son | — | Pennsylvania |
| 5 | Edward Hofer | 9 | son | — | Pennsylvania |
| 6 | Orval Lloyd | 32 | head | Melter | Pennsylvania |
| 7 | Betty Lloyd | 24 | wife | — | Pennsylvania |
| 8 | James Lloyd | 7 | son | — | Pennsylvania |
| 9 | Conrad Kuhn | 50 | head | Truck Washer | Pennsylvania |
| 10 | Mary Kuhn THIS PERSON | 49 | wife | — | Pennsylvania |
| 11 | Margaret Kuhn | 24 | daughter | Sales Clerk | Pennsylvania |
| 12 | Conrad Kuhn | 21 | son | Laborer | Pennsylvania |
| 13 | Caroline Kuhn | 19 | daughter | Sales Clerk | Pennsylvania |
| 14 | John Kuhn | 17 | son | — | Pennsylvania |
| 15 | Dorothy Kuhn | 15 | daughter | — | Pennsylvania |
| 16 | Joseph Kuhn | 12 | son | — | Pennsylvania |
| 17 | Mary Frances Kuhn | 10 | daughter | — | Pennsylvania |
| 18 | Bernard Kuhn | 3 | son | — | Pennsylvania |
| 19 | Fred Miller | 68 | head | — | Pennsylvania |
| 20 | John Miller | 59 | brother | Checker | Pennsylvania |
| 21 | Oscar Heim | 40 | head | — | Pennsylvania |
| 22 | Mary Heim | 39 | wife | — | Pennsylvania |
| 23 | Margaret Heim | 15 | daughter | — | Pennsylvania |
| 24 | Elizabeth Heim | 11 | daughter | — | Pennsylvania |
| 25 | Mary Ann Heim | 5 | daughter | — | Pennsylvania |
| 26 | George King | 76 | head | — | Pennsylvania |
| 27 | Anna King | 68 | wife | — | Pennsylvania |
| 28 | Addison Bessinger | 37 | son-in-law | Electrician'S Helper | Pennsylvania |
| 29 | Esther Bessinger | 35 | daughter | — | Pennsylvania |
| 30 | John H. Aleins | 59 | head | Fitter | Germany |
| 31 | Amelia Aleins | 58 | wife | — | Germany |
| 32 | Robert Aleins | 27 | son | Plumber'S Helper | Pennsylvania |
| 33 | Mary A. Algeo | 81 | head | — | Pennsylvania |
| 34 | Carrie Piathowski | 44 | daughter | Sales Clerk | Pennsylvania |
| 35 | Albert Piathowski | 18 | grandson | — | Maryland |
| 36 | Robert Piathowski | 9 | grandson | — | Maryland |
| 37 | Ralph Barone | 45 | head | Collector | Italy |
| 38 | Vickmer Yarmers | 73 | head | — | Hungary |
| 39 | Rose Yarmers | 62 | wife | — | Hungary |
| 40 | Rose Yarmers | 26 | daughter | Sales Clerk | 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)