MS
Mary Sheehan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Sheehan across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Sheehan |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1930 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bernadette Sheehan | Daughter | — | 6 | ~1934 |
| Mary Sheehan | Daughter | — | 10 | ~1930 |
| Robert Sheehan | Head | — | 44 | ~1896 |
| Robert Sheehan | Son | — | 21 | ~1919 |
| Gilbert Sheehan | Son | — | 20 | ~1920 |
| Paul Sheehan | Son | — | 13 | ~1927 |
| Albert Sheehan | Son | — | 13 | ~1927 |
| James Sheehan | Son | — | 17 | ~1923 |
| Marie Sheehan | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age
Allegheny, Pennsylvania · implied b. ~1930 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shuhan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 10
Allegheny-County, Pennsylvania · implied b. ~1930 — 9 household members
| Surname | Sheehan |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | 4 |
| 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 Sheehan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Sheehan
Daughter · 1940 · age 10 · b. ~1930 · Pennsylvania
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Sibling
Bernadette Sheehan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Sheehan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Sheehan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Sheehan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Sheehan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gilbert Sheehan
Sibling · 1940 · age 20
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 — 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-t0627-03665-00033)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas F. Thomas | 9 | Son | — | Pennsylvania |
| 2 | Patricia Thomas | 7 | Daughter | — | Pennsylvania |
| 3 | Elizabeth Thomas | 6 | Daughter | — | Pennsylvania |
| 4 | Joseph Foy | 63 | Father-in-law | Proprietor | England |
| 5 | Robert A. Sheehan | 44 | Head | Electrician | Pennsylvania |
| 6 | Marie Sheehan | 44 | Wife | — | Pennsylvania |
| 7 | Robert Jr. Sheehan | 21 | Son | Laborer | Pennsylvania |
| 8 | Gilbert Sheehan | 20 | Son | Laborer | Pennsylvania |
| 9 | James Sheehan | 17 | Son | — | Pennsylvania |
| 10 | Albert Sheehan | 13 | Son | — | Pennsylvania |
| 11 | Paul Sheehan | 13 | Son | — | Pennsylvania |
| 12 | Mary J. Sheehan THIS PERSON | 10 | Daughter | — | Pennsylvania |
| 13 | Bernadette Sheehan | 6 | Daughter | — | Pennsylvania |
| 14 | Thomas Haverty | 49 | Head | Special Police | Pennsylvania |
| 15 | Margaret Haverty | 47 | Wife | — | Pennsylvania |
| 16 | Margaret R. Haverty | 23 | Daughter | Saleswoman | Pennsylvania |
| 17 | Agnes M. Haverty | 20 | Daughter | Nurse Maiden | Pennsylvania |
| 18 | Robert J. Brown | 40 | Head | Special Police | Pennsylvania |
| 19 | Gladys Brown | 32 | Wife | — | Pennsylvania |
| 20 | Helen Brown | 20 | Daughter | Clerk | Pennsylvania |
| 21 | Robert Brown | 19 | Son | Laborer | Pennsylvania |
| 22 | Mary H. Brown | 17 | Son | — | Pennsylvania |
| 23 | Mary J. Brown | 16 | Daughter | — | Pennsylvania |
| 24 | Margaret Brown | 14 | Daughter | — | Pennsylvania |
| 25 | William Brown | 12 | Son | — | Pennsylvania |
| 26 | Thomas Brown | 11 | Son | — | Pennsylvania |
| 27 | Edward Brown | 9 | Son | — | Pennsylvania |
| 28 | Doris Brown | 7 | Daughter | — | Pennsylvania |
| 29 | Daniel Nugent | 70 | Head | Retired | Pennsylvania |
| 30 | Margaret Nugent | 60 | Wife | — | Pennsylvania |
| 31 | James Nugent | 35 | Son | Laborer | Pennsylvania |
| 32 | Thomas Nugent | 30 | Son | Clerk | Pennsylvania |
| 33 | Anna Nugent | 23 | Daughter | Clerk | Pennsylvania |
| 34 | Alice Nugent | 20 | Daughter | Clerk | Pennsylvania |
| 35 | Mary Nugent | 18 | Daughter | — | Pennsylvania |
| 36 | Thomas Mcfarland | 43 | Head | Crane Operator | Pennsylvania |
| 37 | Mary Mcfarland | 41 | Wife | — | Pennsylvania |
| 38 | Margaret Mcfarland | 21 | Daughter | House Maid | Pennsylvania |
| 39 | Thomas Mcfarland | 19 | Son | Helper Chauffeur | Pennsylvania |
| 40 | Eileen Mcfarland | 17 | Daughter | — | 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)