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Mary Kirk — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Westmoreland-County, Pennsylvania
Our Model Tree links this Mary Kirk across the 1930 and 1940 US Censuses in Westmoreland-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1903), then head of a 8-person household.
Age 37
b. ~1903
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Westmoreland-County, Pennsylvania |
| Surname | Kirk |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Greensburg |
| 1935 Residence (County) | Westmoreland |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Pa. |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Greensburg |
| Est. Birth Year | ~1903 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Patrick Kirk | Son | — | 5 | ~1935 |
| Jeanne Kirk | Son | — | 9 | ~1931 |
| Gordon Kirk | Son | — | ~1940 | |
| Francis Kirk | Head | — | 38 | ~1902 |
| Francis Kirk | Son | — | 6 | ~1934 |
| Margaret Kirk | Daughter | — | 12 | ~1928 |
| James Kirk | Son | — | 10 | ~1930 |
| Mary Kirk | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Allegheny, Pennsylvania
Spouse, age 26
Allegheny, Pennsylvania · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirk |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | West Virginia |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Westmoreland-County, Pennsylvania
Spouse, age 37
Westmoreland-County, Pennsylvania · implied b. ~1903 — 8 household members
| Surname | Kirk |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Greensburg |
| 1935 Residence (County) | Westmoreland |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Pa. |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Kirk across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kirk
Spouse · 1940 · age 37 · b. ~1903 · 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 — Westmoreland-County, Pennsylvania
Open full size
1940 US Federal Census — Westmoreland-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03630-00404)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Drake | 35 | Head | Engineer | Pa. |
| 2 | Louise Drake | 32 | Wife | — | Pa. |
| 3 | Robert Jr. Drake | 10 | Son | — | Pa. |
| 4 | Betty Lou Drake | 8 | Daughter | — | Pa. |
| 5 | Sebastian Drake | 62 | Father | — | Pa. |
| 6 | Blanche Drake | 66 | Mother | — | Pa. |
| 7 | Lorene Gans | 24 | Lodger | Nurse | Pa. |
| 8 | Anthony Zella | 37 | Head | Ins. Agent | Pa. |
| 9 | Anna Zella | 31 | Wife | — | Pa. |
| 10 | Shirley Zella | 12 | Daughter | — | Pa. |
| 11 | Patricia Zella | 4 | Daughter | — | Pa. |
| 12 | Patrick Moore | 66 | Head | Foreman | England |
| 13 | Mary Moore | 62 | Wife | — | Germany |
| 14 | Virginia Moore | 17 | Daughter | — | Pa. |
| 15 | Henrietta Hoke | 41 | Sister-in-law | — | Pa. |
| 16 | Francis Kirk | 38 | Head | Road Supt. | Pa. |
| 17 | Mary Kirk THIS PERSON | 37 | Wife | — | Maryland |
| 18 | Margaret A. Kirk | 12 | Daughter | — | Pa. |
| 19 | James F. Kirk | 10 | Son | — | Pa. |
| 20 | Jeanne Kirk | 9 | Son | — | Pa. |
| 21 | Francis Kirk | 6 | Son | — | Pa. |
| 22 | Patrick Kirk | 5 | Son | — | Pa. |
| 23 | Gordon T. Kirk | 0 | Son | — | Pa. |
| 24 | James Steele | 35 | Head | Ins. Supervisor | Pa. |
| 25 | Rose Steele | 35 | Wife | — | Pa. |
| 26 | Dorothy Steele | 8 | Daughter | — | Pa. |
| 27 | Jane Steele | 6 | Daughter | — | Pa. |
| 28 | Paul Schlawieck | 41 | Head | Welder | Germany |
| 29 | Florence Barclay | 35 | Maid | Housekeeper | Pa. |
| 30 | Left To Many Lines | None | — | — | — |
| 31 | James F. Shope | 45 | Head | Asst. Manager | Pa. |
| 32 | Clara W. Shope | 46 | Wife | — | Pa. |
| 33 | William Shope | 17 | Son | — | Pa. |
| 34 | Lois C. Shope | 20 | Daughter | — | Pa. |
| 35 | Lois Jane Shope | 12 | Daughter | — | Pa. |
| 36 | Frank L. Ziff | 43 | Head | Huckster | Russia |
| 37 | Alice Ziff | 38 | Wife | — | Russia |
| 38 | Ethel Ziff | 15 | Daughter | — | Pa. |
| 39 | Bessie Ziff | 14 | Daughter | — | Pa. |
| 40 | Leonard Barry Ziff | 2 | Son | — | Pa. |
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)