JI
James Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Crawford-County, Pennsylvania
Our Model Tree links this James Irwin across the 1930 and 1940 US Censuses in Crawford-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 6-person household.
Age 10
b. ~1930
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Crawford-County, Pennsylvania |
| Surname | Irwin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Troy township |
| 1935 Residence (County) | Crawford |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Troy Township |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Naoma Irwin | Daughter | — | 6 | ~1934 |
| Fay Irwin | Spouse | — | 28 | ~1912 |
| Clarence Irwin | Head | — | 35 | ~1905 |
| Louise Irwin | Daughter | — | 3 | ~1937 |
| James Irwin | Son | — | 10 | ~1930 |
| Doris Irwin | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Mercer, Pennsylvania
Son, age
Mercer, Pennsylvania · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | James L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Crawford-County, Pennsylvania
Son, age 10
Crawford-County, Pennsylvania · implied b. ~1930 — 6 household members
| Surname | Irwin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Troy township |
| 1935 Residence (County) | Crawford |
| Highest Grade | No 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
Son · 1940 · age 10 · b. ~1930 · Pennsylvania
★ You are viewing this record
Sibling
Naoma Irwin
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Irwin
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Irwin
Sibling · 1940 · age 7
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 — Crawford-County, Pennsylvania
Open full size
1940 US Federal Census — Crawford-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03477-00256)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clarence Gates | 37 | Head | Farmer | Pennsylvania |
| 42 | Marjorie Gates | 31 | Wife | — | Pennsylvania |
| 43 | Earl Gates | 5 | Son | — | Pennsylvania |
| 44 | Clarence Irwin | 35 | Head | Log Cutter | Pennsylvania |
| 45 | Fay Irwin | 28 | Wife | — | Pennsylvania |
| 46 | James Irwin THIS PERSON | 10 | Son | — | Pennsylvania |
| 47 | Doris Irwin | 7 | Daughter | — | Pennsylvania |
| 48 | Naoma Irwin | 6 | Daughter | — | Pennsylvania |
| 49 | Louise Irwin | 3 | Daughter | — | Pennsylvania |
| 50 | Oscar Harvey | 49 | Head | Farmer | Pennsylvania |
| 51 | Ethel Harvey | 49 | Wife | — | Pennsylvania |
| 52 | Ruby Harvey | 25 | Daughter | Net Worker | Pennsylvania |
| 53 | Lawrence Harvey | 12 | Son | — | Pennsylvania |
| 54 | Hattie Morehead | 48 | Head | — | Pennsylvania |
| 55 | Gladys Morehead | 17 | Daughter | — | Pennsylvania |
| 56 | Floyd Huckleberry | 31 | Son-in-law | Farmer | Pennsylvania |
| 57 | Ruth Huckleberry | 23 | Daughter | — | Ohio |
| 58 | Earl Huckleberry | 5 | Grandson | — | Pennsylvania |
| 59 | Harold Huckleberry | 3 | Grandson | — | Pennsylvania |
| 60 | Leroy Claypool | 55 | Head | Road Construct. | Pennsylvania |
| 61 | Lola Claypool | 49 | Wife | — | Pennsylvania |
| 62 | Ernest Claypool | 13 | Son | — | Pennsylvania |
| 63 | John Gettinger | 37 | Head | War Veteran | Pennsylvania |
| 64 | Gladys Gettinger | 32 | Wife | — | Pennsylvania |
| 65 | Phyllis Gettinger | 11 | Daughter | — | Pennsylvania |
| 66 | Betty Gettinger | 10 | Daughter | — | Pennsylvania |
| 67 | Barbara Gettinger | 6 | Daughter | — | Pennsylvania |
| 68 | Homer Rodgers | 37 | Head | Road Construct. | Pennsylvania |
| 69 | Pauline Rodgers | 31 | Wife | — | Pennsylvania |
| 70 | Homer Jr. Rodgers | 16 | Son | — | Pennsylvania |
| 71 | Gene Rodgers | 14 | Son | — | Pennsylvania |
| 72 | Wendell Rodgers | 4 | Son | — | Pennsylvania |
| 73 | Maxine Shofstall | 12 | Step daughter | — | Pennsylvania |
| 74 | Jay Grove | 64 | Head | Farmer | Pennsylvania |
| 75 | Edith Grove | 32 | Wife | Farm Laborer | Pennsylvania |
| 76 | Mildred Grove | 24 | Daughter | — | Maryland |
| 77 | Edith Grove | 6 | Granddaughter | — | Pennsylvania |
| 78 | Wanita Grove | 5 | Granddaughter | — | Pennsylvania |
| 79 | Artie Dempsey | 56 | Head | Milk Dealer | Pennsylvania |
| 80 | Maid Dempsey | 53 | Wife | — | 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)