JI
John Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Oakland-County, Michigan
Our Model Tree links this John Irwin across the 1930 and 1940 US Censuses in Oakland-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1900), then head of a 6-person household.
Age 40
b. ~1900
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Oakland-County, Michigan |
| Surname | Irwin |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Holly village |
| 1935 Residence (County) | Oakland |
| Additional Details | |
| Occupation | Machinist |
| Industry | Spring Manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H-2 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Machinist |
| Township / Ward | Holly Village |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alice Irwin | Spouse | — | 30 | ~1910 |
| Donna Irwin | Daughter | — | 6 | ~1934 |
| John Irwin | Son | — | 12 | ~1928 |
| Melvin Irwin | Son | — | 10 | ~1930 |
| John Irwin | Head | — | 40 | ~1900 |
| Ida Irwin | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Oakland, Michigan
Head, age 29
Oakland, Michigan · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 25 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Mechanic |
| Industry | Spring Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 20 |
| Veteran | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Oakland-County, Michigan
Head, age 40
Oakland-County, Michigan · implied b. ~1900 — 6 household members
| Surname | Irwin |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Holly village |
| 1935 Residence (County) | Oakland |
| Occupation | Machinist |
| Industry | Spring Manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H-2 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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.
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This person
Anchor record
John Irwin
Head · 1940 · age 40 · b. ~1900 · Michigan
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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 — Oakland-County, Michigan
Open full size
1940 US Federal Census — Oakland-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01799-00863)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Carey | 27 | wife | — | Michigan |
| 42 | Elwood Carey | 2 | son | — | Michigan |
| 43 | David Hayward | 34 | head | Machinist | Michigan |
| 44 | Gladys Hayward | 33 | wife | — | Michigan |
| 45 | David Jr Hayward | 13 | son | — | Michigan |
| 46 | Doris Jean Hayward | 12 | daughter | — | Michigan |
| 47 | Elizabeth Hayward | 9 | daughter | — | Michigan |
| 48 | Glenn Hayward | 7 | son | — | Michigan |
| 49 | Marvin Hayward | 5 | son | — | Michigan |
| 50 | Beverly Ann Hayward | 1 | daughter | — | Michigan |
| 51 | Norton Bigelow | 27 | head | Truck Driver | Michigan |
| 52 | Marianne Bigelow | 22 | wife | — | Michigan |
| 53 | Basil Norton Bigelow | 2 | son | — | Michigan |
| 54 | Harry A. Klein | 53 | head | Finishing Foreman | Ohio |
| 55 | Della Mae Klein | 66 | wife | — | Ohio |
| 56 | Eugene Bush | 34 | head | Radio Service | Michigan |
| 57 | Sybil Bush | 31 | wife | — | West Virginia |
| 58 | Ronald Bush | 12 | son | — | Michigan |
| 59 | Nellie Masters | 13 | daughter | — | West Virginia |
| 60 | Myrta Quick | 65 | head | — | Michigan |
| 61 | Violet M. Allis | 33 | daughter | Punch Press Operator | Michigan |
| 62 | Eileen Hunter | 23 | daughter | Housework | Michigan |
| 63 | Dale Doebler | 12 | grandson | — | Michigan |
| 64 | Elson Doebler | 7 | grandson | — | Michigan |
| 65 | Donald Riddle | 30 | head | Sheet Metal Dept. | Michigan |
| 66 | Goldie Riddle | 31 | wife | — | Michigan |
| 67 | Gloria Riddle | 7 | daughter | — | Michigan |
| 68 | B. Everett | 21 | boarder | Sheet Metal Worker | Michigan |
| 69 | Melvin S. Wheeler | 24 | boarder | Core Maker | Michigan |
| 70 | John Irwin THIS PERSON | 40 | head | Machinist | Indiana |
| 71 | Alice Irwin | 30 | wife | — | Michigan |
| 72 | John Irwin | 12 | son | — | Michigan |
| 73 | Melvin Irwin | 10 | son | — | Michigan |
| 74 | Donna Irwin | 6 | daughter | — | Michigan |
| 75 | Ida Jean Irwin | 5 | daughter | — | Michigan |
| 76 | Paul E. Van Wormer | 27 | head | Driver | Michigan |
| 77 | Lyda Belle Van Wormer | 23 | wife | — | Michigan |
| 78 | Russell Edward Van Wormer | 4 | son | — | Michigan |
| 79 | Helen Alderman | 51 | head | Tool Crib Clerk | Michigan |
| 80 | Helen Alderman | 48 | wife | — | Kentucky |
Related Census Records
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)