JI
James Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this James Irwin across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Irwin |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Renton |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Miner |
| Township / Ward | Renton |
| Est. Birth Year | ~1913 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Irwin | Son | — | 3 | ~1937 |
| Shirley Irwin | Daughter | — | 4 | ~1936 |
| James Irwin | Head | — | 27 | ~1913 |
| Jane Irwin | Spouse | — | 27 | ~1913 |
| Judith Irwin | Daughter | — | 1 | ~1939 |
Census Appearances
1930
Westmoreland, Pennsylvania
Son, age 16
Westmoreland, Pennsylvania · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | James D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 27
Allegheny-County, Pennsylvania · implied b. ~1913 — 5 household members
| Surname | Irwin |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Renton |
| 1935 Residence (County) | Allegheny |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1300 |
| Highest Grade | Hs 4 |
| 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 James Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Irwin
Head · 1940 · age 27 · b. ~1913 · Pennsylvania
★ You are viewing this record
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-t0627-03415-00310)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna J. Biondich | 8 | Daughter | — | Pennsylvania |
| 2 | Robert J. Biondich | 4 | Son | — | Pennsylvania |
| 3 | George Biondich | 2 | Son | — | Pennsylvania |
| 4 | John J. Biondich | 0 | Son | — | Pennsylvania |
| 5 | James Irwin THIS PERSON | 27 | Head | Miner | Pennsylvania |
| 6 | Jane Irwin | 27 | Wife | — | Pennsylvania |
| 7 | Shirley R. Irwin | 4 | Daughter | — | Pennsylvania |
| 8 | James Jr. Irwin | 3 | Son | — | Pennsylvania |
| 9 | Judith A. Irwin | 1 | Daughter | — | Pennsylvania |
| 10 | John Wyich | 30 | Head | Miner | Austria |
| 11 | Victoria Wyich | 24 | Wife | — | Pennsylvania |
| 12 | Marian L. Wyich | 6 | Daughter | — | Pennsylvania |
| 13 | Elizabeth J. Wyich | 3 | Daughter | — | Pennsylvania |
| 14 | Ronald J. Wyich | 1 | Son | — | Pennsylvania |
| 15 | Joseph Borich | 40 | Head | Miner | Austria |
| 16 | Helen Borich | 25 | Wife | — | Pennsylvania |
| 17 | Mary J. Borich | 11 | Daughter | — | Pennsylvania |
| 18 | Josephine Borich | 10 | Daughter | — | Pennsylvania |
| 19 | Joseph Jr. Borich | 7 | Son | — | Pennsylvania |
| 20 | John Borich | 5 | Son | — | Pennsylvania |
| 21 | Stanley Borich | 1 | Son | — | Pennsylvania |
| 22 | Joseph Mangini | 46 | Head | Miner | Pennsylvania |
| 23 | Angeline J. Mangini | 31 | Wife | Housework | Pennsylvania |
| 24 | Ralph Mangini | 17 | Son | Car Washer | Pennsylvania |
| 25 | Charles Mangini | 14 | Son | — | Pennsylvania |
| 26 | Andrew Borich | 64 | Head | Miner | Austria |
| 27 | Mary Borich | 63 | Wife | — | Austria |
| 28 | Mike Swistok | 52 | Lodger | Miner | Austria |
| 29 | James Corvine | 27 | Head | Miner | Pennsylvania |
| 30 | Josephine Corvine | 27 | Wife | — | Pennsylvania |
| 31 | Colleen Corvine | 4 | Daughter | — | Pennsylvania |
| 32 | Mike Gutka | 50 | Head | Miner | Czecho-Slovakia |
| 33 | Lipaldini Gutka | 54 | Wife | — | Austria |
| 34 | Mildred Gutka | 16 | Daughter | — | Pennsylvania |
| 35 | Henry Gutka | 12 | Son | — | Pennsylvania |
| 36 | Margaret Gutka | 10 | Daughter | — | Pennsylvania |
| 37 | John Sr. Rabick | 57 | Head | Miner | Czecho-Slovakia |
| 38 | Steve Rabick | 25 | Son | Miner | Pennsylvania |
| 39 | Mary Rabick | 21 | Daughter-in-law | Housework | Pennsylvania |
| 40 | Andy Rabick | 19 | 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)