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.~1893), then head of a 4-person household.
Age 47
b. ~1893
Male
Head
Born: England
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 | 47 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Ferndale City |
| 1935 Residence (County) | Oakland |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Salesman |
| Industry | Wholesale Lumber Company |
| Class of Worker | PW |
| Hours Worked | 66 |
| Income (1939) | 2080 |
| Highest Grade | C 4 |
| 1935 Residence | Same home |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Salesman |
| Township / Ward | Ferndale City |
| Est. Birth Year | ~1893 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mildred Irwin | Spouse | — | 46 | ~1894 |
| John Irwin | Head | — | 47 | ~1893 |
| Kay Irwin | Daughter | — | 10 | ~1930 |
| Joyce Irwin | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Oakland, Michigan
Head, age 37
Oakland, Michigan · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1901 |
| Age at First Marriage | 26 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | England |
| Occupation | Salesman |
| Industry | Building Material |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 9,000 |
| Radio Set | R |
| Veteran | Yes |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Oakland-County, Michigan
Head, age 47
Oakland-County, Michigan · implied b. ~1893 — 4 household members
| Surname | Irwin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Ferndale City |
| 1935 Residence (County) | Oakland |
| Naturalization Status | Naturalized |
| Occupation | Salesman |
| Industry | Wholesale Lumber Company |
| Class of Worker | PW |
| Hours Worked | 66 |
| Income (1939) | 2080 |
| Highest Grade | C 4 |
| 1935 Residence | Same home |
| Birth Country | England |
| Birthplace (normalized) | england |
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 47 · b. ~1893 · Michigan
★ 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 — 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-t0627-01799-00527)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Alexander | 10 | Son | — | Michigan |
| 2 | Nellie J Alexander | 8 | Daughter | — | Michigan |
| 3 | Phyllis Alexander | 1 | Daughter | — | Michigan |
| 4 | Earl L Kantz | 34 | Head | Interior Decorator | Pennsylvania |
| 5 | Dorothy B Kantz | 34 | Wife | — | New York |
| 6 | Barbara A Kantz | 13 | Daughter | — | Michigan |
| 7 | Don B Kantz | 9 | Son | — | Michigan |
| 8 | A Judson Brewster | 65 | Head | Interior Decorator | New York |
| 9 | Alice C Brewster | 62 | Wife | — | New York |
| 10 | Frank C Hofer | 48 | Head | Die Maker | Minnesota |
| 11 | Ann M Hofer | 48 | Wife | — | Canada English |
| 12 | Evelyn A Hofer | 22 | Daughter | — | Michigan |
| 13 | Edward J Hofer | 19 | Son | — | Canada English |
| 14 | Carl W Hannan | 34 | Head | Tool Maker | Michigan |
| 15 | Marion Hannan | 27 | Wife | — | Michigan |
| 16 | Gloria J Hannan | 7 | Daughter | — | Michigan |
| 17 | Carl J Hannan | 4 | Son | — | Michigan |
| 18 | James W Hannan | 1 | Son | — | Michigan |
| 19 | Llewellyn Evans | 51 | Head | Clergyman | North Wales |
| 20 | Ethel B Evans | 42 | Wife | — | England |
| 21 | Herbert H Evans | 15 | Son | — | Michigan |
| 22 | David C Evans | 11 | Son | — | Michigan |
| 23 | Louis E Snyder | 35 | Head | Owner | Michigan |
| 24 | Ruth Snyder | 36 | Wife | — | Michigan |
| 25 | Janet Snyder | 5 | Daughter | — | Michigan |
| 26 | Susan Snyder | 4 | Daughter | — | Michigan |
| 27 | Thomas S Martin | 42 | Head | Salesman | Ohio |
| 28 | Helen S Martin | 39 | Wife | — | Michigan |
| 29 | Thomas S Martin | 15 | Son | — | Michigan |
| 30 | Betty H Martin | 13 | Daughter | — | Michigan |
| 31 | Mary E Martin | 3 | Daughter | — | Michigan |
| 32 | Clair F Hamilton | 45 | Head | Clergyman | Pennsylvania |
| 33 | Mabel A Hamilton | 45 | Wife | — | Pennsylvania |
| 34 | Charles Hamilton | 14 | Son | — | Michigan |
| 35 | John Irwin THIS PERSON | 47 | Head | Salesman | England |
| 36 | Mildred Irwin | 46 | Wife | — | England |
| 37 | Joyce Irwin | 15 | Daughter | — | Michigan |
| 38 | Kay Irwin | 10 | Daughter | — | Michigan |
| 39 | Claude Postiff | 51 | Head | Civil Engineer | Michigan |
| 40 | M Caroline Postiff | 50 | Wife | — | Michigan |
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)