MS
Mary Sweeney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lackawanna-County, Pennsylvania
Our Model Tree links this Mary Sweeney across the 1930 and 1940 US Censuses in Lackawanna-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 10-person household.
Age 16
b. ~1924
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lackawanna-County, Pennsylvania |
| Surname | Sweeney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Olyphant borough |
| 1935 Residence (County) | Lackawanna |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Olyphant Borough |
| Est. Birth Year | ~1924 |
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 Sweeney | Daughter | — | 16 | ~1924 |
| Cathryn Sweeney | Daughter | — | 5 | ~1935 |
| Helen Sweeney | Daughter | — | 13 | ~1927 |
| Ann Sweeney | Daughter | — | 7 | ~1933 |
| Margaret Sweeney | Daughter | — | 9 | ~1931 |
| Anthony Sweeney | Head | — | 46 | ~1894 |
| John Sweeney | Son | — | 6 | ~1934 |
| Michael Sweeney | Son | — | 1 | ~1939 |
| James Sweeney | Son | — | 10 | ~1930 |
| Anna Sweeney | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Lackawanna, Pennsylvania
Daughter, age 5
Lackawanna, Pennsylvania · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | Mary |
| 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
Lackawanna-County, Pennsylvania
Daughter, age 16
Lackawanna-County, Pennsylvania · implied b. ~1924 — 10 household members
| Surname | Sweeney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Olyphant borough |
| 1935 Residence (County) | Lackawanna |
| Highest Grade | Hs 2 |
| 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 16 · b. ~1924 · Pennsylvania
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Sibling
Ann Sweeney
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Sweeney
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cathryn Sweeney
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Sweeney
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Sweeney
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Sweeney
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Sweeney
Sibling · 1940 · age 9
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 — Lackawanna-County, Pennsylvania
Open full size
1940 US Federal Census — Lackawanna-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03526-00360)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur F Waring | 49 | Head | Laborer | Pennsylvania |
| 2 | Anna C Waring | 48 | Wife | — | Pennsylvania |
| 3 | John W Waring | 27 | Son | Salesman | Pennsylvania |
| 4 | Edward J Waring | 24 | Son | Laborer | Pennsylvania |
| 5 | Hazel T Waring | 22 | Son | New Worker | Pennsylvania |
| 6 | John Padden | 69 | Head | Janitor | Pennsylvania |
| 7 | Martin Padden | 37 | Son | Carpenter | Pennsylvania |
| 8 | Mary E Padden | 37 | Daughter | — | Pennsylvania |
| 9 | Mary Padden | 11 | Daughter | — | Pennsylvania |
| 10 | Cathryn Padden | 9 | Daughter | — | Pennsylvania |
| 11 | Melvin Padden | 7 | Son | — | Pennsylvania |
| 12 | Ann Sullivan | 76 | Head | Saleswoman | Pennsylvania |
| 13 | Margaret Kilcullen | 56 | Lodger | — | Eire |
| 14 | Elizabeth Kilcullen | 78 | Head | — | Eire |
| 15 | James Kilcullen | 30 | Nephew | Proprietor | Pennsylvania |
| 16 | Frank J Sweeney | 47 | Head | Miner | Pennsylvania |
| 17 | Agnes V Sweeney | 40 | Wife | — | Pennsylvania |
| 18 | John Sweeney | 17 | Son | — | Pennsylvania |
| 19 | Thomas Sweeney | 13 | Son | — | Pennsylvania |
| 20 | William H Campbell | 44 | Head | Proprietor | Pennsylvania |
| 21 | Alice E Campbell | 41 | Wife | — | Pennsylvania |
| 22 | Anthony Sweeney | 46 | Head | Miner | Eire |
| 23 | Anna Sweeney | 37 | Wife | — | Eire |
| 24 | Mary Sweeney THIS PERSON | 16 | Daughter | — | Pennsylvania |
| 25 | Helen E Sweeney | 13 | Daughter | — | Pennsylvania |
| 26 | James Sweeney | 10 | Son | — | Pennsylvania |
| 27 | Margaret Sweeney | 9 | Daughter | — | Pennsylvania |
| 28 | Ann Sweeney | 7 | Daughter | — | Pennsylvania |
| 29 | John Sweeney | 6 | Son | — | Pennsylvania |
| 30 | Cathryn Sweeney | 5 | Daughter | — | Pennsylvania |
| 31 | Michael Sweeney | 1 | Son | — | Pennsylvania |
| 32 | Joseph A Mcnamara | 30 | Head | Labour | Pennsylvania |
| 33 | Evelyn Mcnamara | 51 | Wife | — | Pennsylvania |
| 34 | Mary Mcnamara | 5 | Daughter | — | Pennsylvania |
| 35 | James G Dempsey | 41 | Head | Teacher | Pennsylvania |
| 36 | Gertrude Dempsey | 34 | Wife | — | Pennsylvania |
| 37 | Patricia Dempsey | 13 | Daughter | — | Pennsylvania |
| 38 | Mary Dempsey | 9 | Daughter | — | Pennsylvania |
| 39 | Joan Dempsey | 8 | Daughter | — | Pennsylvania |
| 40 | Cathryn Dempsey | 6 | Daughter | — | 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)