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Mary Tierney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lackawanna-County, Pennsylvania
Our Model Tree links this Mary Tierney across the 1920, 1930 and 1940 US Censuses in Lackawanna-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Helen & Owen — first a daughter (b.~1914), then head of a 11-person household.
Age 26
b. ~1914
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lackawanna-County, Pennsylvania |
| Surname | Tierney |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Scranton City |
| Additional Details | |
| Occupation | Liberty & Diamond |
| Industry | PW |
| Class of Worker | 480 |
| Highest Grade | Hs 4 |
| 1935 Residence | 40 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Liberty & Diamond |
| Township / Ward | Scranton City |
| Est. Birth Year | ~1914 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Tierney | Daughter | — | 17 | ~1923 |
| Mary Tierney | Daughter | — | 26 | ~1914 |
| Ellen Tierney | Daughter | — | 19 | ~1921 |
| Hugh Tierney | Spouse | — | 55 | ~1885 |
| Josephine Norton | Daughter | — | 30 | ~1910 |
| Helen Tierney | Head | — | 65 | ~1875 |
| Patricia Tierney | Daughter | — | 13 | ~1927 |
| Jean Norton | Other | — | 1 | ~1939 |
| Eugene Tierney | Son | — | 31 | ~1909 |
| William Tierney | Son | — | 14 | ~1926 |
| Joseph Norton | Other | — | 30 | ~1910 |
Census Appearances
1920
Lackawanna, Pennsylvania
Daughter, age 6
Lackawanna, Pennsylvania · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tierney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Lackawanna, Pennsylvania
Daughter, age 16
Lackawanna, Pennsylvania · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tierney |
| Given Name | Mary C. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Apprentice |
| Industry | Silk Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lackawanna-County, Pennsylvania
Daughter, age 26
Lackawanna-County, Pennsylvania · implied b. ~1914 — 11 household members
| Surname | Tierney |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Scranton City |
| Occupation | Liberty & Diamond |
| Industry | PW |
| Class of Worker | 480 |
| Highest Grade | Hs 4 |
| 1935 Residence | 40 |
| 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 Tierney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Helen Tierney (~0.92 confidence) and father Owen Tierney (~0.92 confidence) and mother Teresa Tierney (~0.92 confidence) and mother Alice Tierney (~0.92 confidence) and father Hugh Tierney (~0.92 confidence) and mother Louise Tierney (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Helen Tierney
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
Owen Tierney
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Teresa Tierney
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Alice Tierney
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Hugh Tierney
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Louise Tierney
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Tierney
Daughter · 1940 · age 26 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Eugene Tierney
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Tierney
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Norton
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Tierney
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Tierney
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Tierney
Sibling · 1940 · age 14
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-t0627-03684-00629)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John H. Hagan | 37 | Head | Scranton Lace Works | Pennsylvania |
| 2 | Lenore Hagan | 31 | Wife | — | Pennsylvania |
| 3 | Lenore Hagan | 17 | Daughter | — | Pennsylvania |
| 4 | William R. Buckley | 72 | Head | — | Pennsylvania |
| 5 | Margaret Buckley | 69 | Wife | — | Pennsylvania |
| 6 | Raymond W. Buckley | 42 | Son | Glen Alden Coal Co | Pennsylvania |
| 7 | Helen M. Buckley | 35 | Daughter | Nat Bank | Pennsylvania |
| 8 | David A. Cotner | 58 | Head | Dupont Powder Co | Pennsylvania |
| 9 | Mary C. Cotner | 56 | Wife | — | Pennsylvania |
| 10 | R. G. Smith | 66 | Head | — | Pennsylvania |
| 11 | R. G. Smith | 65 | Wife | — | Pennsylvania |
| 12 | J. Learned | 69 | Sister | — | Pennsylvania |
| 13 | Helen J. Tierney | 65 | Head | — | Pennsylvania |
| 14 | Hugh J. Tierney | 55 | Wife | — | Pennsylvania |
| 15 | Eugene M. Tierney | 31 | Son | I-C-S | Pennsylvania |
| 16 | Mary L. Tierney THIS PERSON | 26 | Daughter | Liberty & Diamond | Pennsylvania |
| 17 | Ellen R. Tierney | 19 | Daughter | Restaurant | Pennsylvania |
| 18 | Elizabeth Tierney | 17 | Daughter | — | Pennsylvania |
| 19 | William Tierney | 14 | Son | — | Pennsylvania |
| 20 | Patricia A. Tierney | 13 | Daughter | — | Pennsylvania |
| 21 | Joseph J. Norton | 30 | Son-in-law | W-P-A | Pennsylvania |
| 22 | Josephine Norton | 30 | Daughter | — | Pennsylvania |
| 23 | Jean A. Norton | 1 | Granddaughter | — | Pennsylvania |
| 24 | George P. Schieber | 48 | Head | Harry'S Bakery | Pennsylvania |
| 25 | Marguerite H. Schieber | 41 | Wife | — | Pennsylvania |
| 26 | Marguerite M. Schieber | 16 | Daughter | — | Pennsylvania |
| 27 | Marion M. Mcgovern | 23 | Head | 0 | Pennsylvania |
| 28 | Marion May Mcgovern | 15 | Daughter | 0 | Pennsylvania |
| 29 | Harry W. Harris | 55 | Head | Lack. Brewery | Pennsylvania |
| 30 | Isabella Harris | 55 | Wife | — | Pennsylvania |
| 31 | Warren Harris | 20 | Son | Globe Store | Pennsylvania |
| 32 | Lenore Harris | 24 | Daughter | — | Pennsylvania |
| 33 | Adrian Harris | 14 | Son | — | Pennsylvania |
| 34 | Ann C. Deegan | 75 | Head | — | Pennsylvania |
| 35 | Francis J. Deegan | 36 | Son | Private Practice | Pennsylvania |
| 36 | Clare Murray | 17 | Niece | — | Pennsylvania |
| 37 | Joseph M. Mchale | 46 | Head | 48 | Pennsylvania |
| 38 | Ann D. Mchale | 44 | Wife | — | Pennsylvania |
| 39 | Joseph M. Jr. Mchale | 16 | Son | — | Pennsylvania |
| 40 | Mary Jane Mchale | 11 | Daughter | — | Pennsylvania |
Pedigree Summary
Mary + 6 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)