MS
Mary Sweeney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Armstrong-County, Pennsylvania
Our Model Tree links this Mary Sweeney across the 1930 and 1940 US Censuses in Armstrong-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Armstrong-County, Pennsylvania |
| Surname | Sweeney |
| Given Name | Mary Lou |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | South Buffalo Twp |
| 1935 Residence (County) | Armstrong |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | South Buffalo Twp |
| Est. Birth Year | ~1926 |
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 |
|---|---|---|---|---|
| Ellen Sweeney | Daughter | — | 8 | ~1932 |
| Mary Sweeney | Daughter | — | 14 | ~1926 |
| Betty Sweeney | Daughter | — | 13 | ~1927 |
| Andy Sweeney | Head | — | 43 | ~1897 |
| Raymond Sweeney | Son | — | 19 | ~1921 |
| Bobby Sweeney | Son | — | 3 | ~1937 |
| Richard Sweeney | Son | — | 16 | ~1924 |
| Delbert Sweeney | Son | — | 11 | ~1929 |
| Victor Sweeney | Son | — | 21 | ~1919 |
| Margaret Sweeney | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Armstrong, Pennsylvania
Daughter, age 5
Armstrong, Pennsylvania · implied b. ~1925 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Armstrong-County, Pennsylvania
Daughter, age 14
Armstrong-County, Pennsylvania · implied b. ~1926 — 10 household members
| Surname | Sweeney |
| Given Name | Mary Lou |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | South Buffalo Twp |
| 1935 Residence (County) | Armstrong |
| Industry | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| 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 Sweeney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Sweeney
Daughter · 1940 · age 14 · b. ~1926 · Pennsylvania
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Sibling
Victor Sweeney
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Sweeney
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bobby Sweeney
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Sweeney
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Sweeney
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delbert Sweeney
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Sweeney
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Armstrong-County, Pennsylvania
Open full size
1940 US Federal Census — Armstrong-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03424-00598)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mabel Todd | 17 | daughter | — | Pennsylvania |
| 2 | John Todd | 15 | son | — | Pennsylvania |
| 3 | George Todd | 13 | son | — | Pennsylvania |
| 4 | Dorothy Todd | 11 | daughter | — | Pennsylvania |
| 5 | Francis Todd | 8 | daughter | — | Pennsylvania |
| 6 | Robert Hughes | 37 | head | Driller | Pennsylvania |
| 7 | Lola B. Hughes | 36 | wife | — | Pennsylvania |
| 8 | James Hughes | 15 | son | — | Pennsylvania |
| 9 | L. L. Thompson | 72 | head | — | Pennsylvania |
| 10 | Gertrude Thompson | 72 | wife | — | Pennsylvania |
| 11 | Carol Holsing | 19 | grand-daughter | — | Pennsylvania |
| 12 | Donald Holsing | 15 | grand-son | — | Pennsylvania |
| 13 | Joseph L. Braun | 47 | head | Manager | Pennsylvania |
| 14 | Lenora Braun | 46 | wife | Asst. Manager | Pennsylvania |
| 15 | Andy Sweeney | 43 | head | Farmer | Pennsylvania |
| 16 | Margaret Sweeney | 43 | wife | — | Pennsylvania |
| 17 | Victor Sweeney | 21 | son | New Worker | Pennsylvania |
| 18 | Raymond Sweeney | 19 | son | New Worker | Pennsylvania |
| 19 | Richard Sweeney | 16 | son | New Worker | Pennsylvania |
| 20 | Mary Lou Sweeney THIS PERSON | 14 | daughter | — | Pennsylvania |
| 21 | Betty Ann Sweeney | 13 | daughter | — | Pennsylvania |
| 22 | Delbert Sweeney | 11 | son | — | Pennsylvania |
| 23 | Ellen Jane Sweeney | 8 | daughter | — | Pennsylvania |
| 24 | Bobby Sweeney | 3 | son | — | Pennsylvania |
| 25 | Mary C. Kennedy | 53 | head | Teacher | Pennsylvania |
| 26 | Margaret Kennedy | 82 | mother | — | Pennsylvania |
| 27 | I Skiped Extra Line | None | ONE | — | — |
| 28 | Charles H. Craig | 32 | head | Contractor | Pennsylvania |
| 29 | Mercedes Craig | 30 | wife | — | Pennsylvania |
| 30 | Karen Craig | 4 | daughter | — | Pennsylvania |
| 31 | Charles L. Craig | 1 | son | — | Pennsylvania |
| 32 | George L. Coffman | 52 | head | Pipe Fitter | Pennsylvania |
| 33 | Jessie B. Coffman | 47 | wife | — | Pennsylvania |
| 34 | Joseph H. Coffman | 23 | son | Fireman | Pennsylvania |
| 35 | Bernish S. Coffman | 16 | son | — | Pennsylvania |
| 36 | Joseph R. Temple | 29 | head | Pressman | Pennsylvania |
| 37 | Bessie Temple | 27 | wife | — | Pennsylvania |
| 38 | Ruth Ann Temple | 7 | daughter | — | Pennsylvania |
| 39 | Nancy Lee Temple | 1 | daughter | — | Pennsylvania |
| 40 | Richard B. Beale | 28 | head | Labor | Pennsylvania |
Related Census Records
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)