MI
Mary Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lackawanna-County, Pennsylvania
Our Model Tree links this Mary Irwin across the 1930 and 1940 US Censuses in Lackawanna-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 6-person household.
Age 19
b. ~1921
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lackawanna-County, Pennsylvania |
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Clarks Summit |
| 1935 Residence (County) | Lackawanna |
| Additional Details | |
| Occupation | Saleslady |
| Industry | S. S. Kresge |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 105 |
| Highest Grade | Hs 4 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Saleslady |
| Township / Ward | Scranton |
| Est. Birth Year | ~1921 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Frank Irwin | Head | — | 40 | ~1900 |
| Frances Irwin | Daughter | — | 5 | ~1935 |
| Mary Irwin | Daughter | — | 19 | ~1921 |
| Sarah Irwin | Daughter | — | 17 | ~1923 |
| Sarah Irwin | Spouse | — | 41 | ~1899 |
| Elizabeth Irwin | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Lackawanna, Pennsylvania
Daughter, age 9
Lackawanna, Pennsylvania · implied b. ~1921 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lackawanna-County, Pennsylvania
Daughter, age 19
Lackawanna-County, Pennsylvania · implied b. ~1921 — 6 household members
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Clarks Summit |
| 1935 Residence (County) | Lackawanna |
| Occupation | Saleslady |
| Industry | S. S. Kresge |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 105 |
| Highest Grade | Hs 4 |
| 1935 Residence | Pennsylvania |
| 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 Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Irwin
Daughter · 1940 · age 19 · b. ~1921 · Pennsylvania
★ You are viewing this record
Sibling
Frances Irwin
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Irwin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Irwin
Sibling · 1940 · age 17
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-t0627-03684-00641)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank C. Irwin | 40 | Head | Postman | Pennsylvania |
| 2 | Sarah A. Irwin | 41 | Wife | — | Pennsylvania |
| 3 | Mary Irwin THIS PERSON | 19 | Daughter | Saleslady | Pennsylvania |
| 4 | Elizabeth Irwin | 19 | Daughter | Waitress | Pennsylvania |
| 5 | Sarah Irwin | 17 | Daughter | — | Pennsylvania |
| 6 | Frances Irwin | 5 | Daughter | — | Pennsylvania |
| 7 | John J. Murray | 63 | Head | — | Pennsylvania |
| 8 | Mary A. Murray | 61 | Wife | — | Pennsylvania |
| 9 | Joseph P. Murray | 32 | Son | Insulation Attend. | Pennsylvania |
| 10 | Isabelle Murray | 25 | Daughter | Bookkeeper | Pennsylvania |
| 11 | Robert Murray | 21 | Son | Gas Station Attend. | Pennsylvania |
| 12 | Bridget Cook | 65 | Head | — | Pennsylvania |
| 13 | Mary Cook | 35 | Daughter | — | Pennsylvania |
| 14 | Maude Campbell | 61 | Head | — | Pennsylvania |
| 15 | Russell Campbell | 32 | Son | Service Man | Pennsylvania |
| 16 | Mary Campbell | 27 | Daughter | Bookkeeper | Pennsylvania |
| 17 | Robert Campbell | 21 | Son | Office Boy | Pennsylvania |
| 18 | Michael Buddy | 30 | Head | Truck Driver | Pennsylvania |
| 19 | Elizabeth Buddy | 30 | Wife | — | Pennsylvania |
| 20 | Catherine Buddy | 10 | Daughter | — | Pennsylvania |
| 21 | Mary Joan Buddy | 8 | Daughter | — | Pennsylvania |
| 22 | Theresa Buddy | 7 | Daughter | — | Pennsylvania |
| 23 | Elizabeth Buddy | 2 | Daughter | — | Pennsylvania |
| 24 | William A. Buckley | 33 | Head | Mechanic | Pennsylvania |
| 25 | Lorraine Buckley | 29 | Wife | — | Montana |
| 26 | Mary Eleanor Buckley | 9 | Daughter | — | Pennsylvania |
| 27 | William Buckley | 8 | Son | — | Pennsylvania |
| 28 | Annette Buckley | 5 | Daughter | — | Pennsylvania |
| 29 | Beverly Buckley | 1 | Daughter | — | Pennsylvania |
| 30 | Elizabeth A. Markel | 62 | Head | — | Pennsylvania |
| 31 | Dorothy Markel | 31 | Daughter | Never Worked | Pennsylvania |
| 32 | Joseph L. Markel | 29 | Son | Milkman | Pennsylvania |
| 33 | Ureal C. Miller | 61 | Head | Blacksmith | Pennsylvania |
| 34 | B. E. A. Miller | 59 | Wife | — | Pennsylvania |
| 35 | Cecil Miller | 33 | Son | Laborer | Pennsylvania |
| 36 | Alfred Miller | 30 | Son | Laborer | Pennsylvania |
| 37 | Ethel Miller | 26 | Daughter | — | Pennsylvania |
| 38 | Marie Regan | 22 | Boarder | Table Worker | New York |
| 39 | Hannah A. Speranzi | 47 | Head | Janitress | Pennsylvania |
| 40 | Joseph Speranzi | 21 | Son | Laborer | 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)