JI
John Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Oklahoma
Our Model Tree links this John Irwin across the 1930 and 1940 US Censuses in Washington-County, Oklahoma (XGBoost, ~Confirmed) — first a head (b.~1900), then head of a 5-person household.
Age 40
b. ~1900
Male
Head
Born: West Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Oklahoma |
| Surname | Irwin |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | West Virginia |
| 1935 Residence (City) | Bartlesville |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Garage Mech |
| Industry | Oil Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 1935 Residence | Oklahoma |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
| Occupation | Garage Mech |
| Township / Ward | Jackson Twp |
| Est. Birth Year | ~1900 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Jack Irwin | Son | — | 9 | ~1931 |
| Norma Irwin | Daughter | — | 7 | ~1933 |
| John Irwin | Head | — | 40 | ~1900 |
| Jimmy Irwin | Son | — | 5 | ~1935 |
| Odetta Irwin | Spouse | — | 29 | ~1911 |
Census Appearances
1930
Washington, Oklahoma
Son, age 30
Washington, Oklahoma · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | West Virginia |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Service man |
| Industry | Oil Co. Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
1940
Washington-County, Oklahoma
Head, age 40
Washington-County, Oklahoma · implied b. ~1900 — 5 household members
| Surname | Irwin |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | West Virginia |
| 1935 Residence (City) | Bartlesville |
| 1935 Residence (County) | Washington |
| Occupation | Garage Mech |
| Industry | Oil Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 1935 Residence | Oklahoma |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
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 John Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Irwin
Head · 1940 · age 40 · b. ~1900 · Oklahoma
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Washington-County, Oklahoma
Open full size
1940 US Federal Census — Washington-County, Oklahoma
Page Contents
8 people indexed on this census page (nara:1940:m-t0627-03339-00536)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John E. Irwin THIS PERSON | 40 | Head | Garage Mech | West Virginia |
| 2 | Odetta J. Irwin | 29 | Wife | — | Oklahoma |
| 3 | Jack M. Irwin | 9 | Son | — | Oklahoma |
| 4 | Norma Jo Irwin | 7 | Daughter | — | Oklahoma |
| 5 | Jimmy H. Irwin | 5 | Son | — | Oklahoma |
| 6 | Roland D. Collins | 32 | Head | Pumper | Oklahoma |
| 7 | Flora M. Collins | 29 | Wife | — | Oklahoma |
| 8 | Patricia R. Collins | 7 | Daughter | — | Oklahoma |
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)