JC
John Cowan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this John Cowan across the 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1894), then head of a 7-person household.
Age 46
b. ~1894
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Cowan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | assistant foreman |
| Industry | Auto mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2650 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Assistant Foreman |
| Township / Ward | Detroit |
| Est. Birth Year | ~1894 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Violet Cowan | Spouse | — | 42 | ~1898 |
| Beverly Cowan | Daughter | — | 9 | ~1931 |
| Barbara Cowan | Daughter | — | 1 | ~1939 |
| Carol Cowan | Daughter | — | 5 | ~1935 |
| Betty Cowan | Daughter | — | 16 | ~1924 |
| John Cowan | Head | — | 46 | ~1894 |
| Jackie Cowan | Son | — | 11 | ~1929 |
Census Appearances
1930
Wayne, Michigan
Head, age 35
Wayne, Michigan · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cowan |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | asst. foreman |
| Industry | auto factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Wayne-County, Michigan
Head, age 46
Wayne-County, Michigan · implied b. ~1894 — 7 household members
| Surname | Cowan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Occupation | assistant foreman |
| Industry | Auto mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2650 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Cowan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cowan
Head · 1940 · age 46 · b. ~1894 · 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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01887-00633)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Severino Minelli | 30 | Head | Production Utility Man | Kansas |
| 2 | Esther Minelli | 28 | Wife | — | Michigan |
| 3 | Gordon West | 10 | Step-son | — | Michigan |
| 5 | Kenneth Siler | 38 | Head | Salesman Mgr. | Illinois |
| 6 | Edna Siler | 34 | Wife | Saleslady | Michigan |
| 7 | Kenneth Siler | 5 | Son | — | Michigan |
| 8 | Steve Czopko | 37 | Head | Tool Maker | Pennsylvania |
| 9 | Anna Czopko | 33 | Wife | — | Czechoslovakia |
| 10 | Claire Czopko | 7 | Daughter | — | Michigan |
| 11 | Mary Ann Czopko | 4 | Daughter | — | Michigan |
| 12 | Ethel Czopko | 2 | Daughter | — | Michigan |
| 13 | Eugene P. Binder | 34 | Head | Tool Maker | Germany |
| 14 | Anny Binder | 32 | Wife | Dressmaker | Germany |
| 15 | Frank Kuhn | 36 | Head | Steamfitter | Germany |
| 16 | Lena Kuhn | 34 | Wife | — | Germany |
| 17 | Patsy A. Kuhn | 4 | Daughter | — | Michigan |
| 18 | Joyce M. Kuhn | 2 | Daughter | — | Michigan |
| 19 | Myron Olson | 34 | Head | Employment Mgr. | Michigan |
| 20 | Kathryn Olson | 32 | Wife | — | Pennsylvania |
| 21 | Mildred Olson | 7 | Daughter | — | Michigan |
| 22 | James Olson | 5 | Son | — | Michigan |
| 24 | Albert Lapshan | 29 | Head | Maintenance | Illinois |
| 25 | Irene Lapshan | 28 | Wife | — | Michigan |
| 26 | George A. Lapshan | 2 | Son | — | Michigan |
| 27 | John Cowan THIS PERSON | 46 | Head | Assistant Foreman | Ohio |
| 28 | Violet Cowan | 42 | Wife | — | Michigan |
| 29 | Betty Cowan | 16 | Daughter | — | Michigan |
| 30 | Jackie Cowan | 11 | Son | — | Michigan |
| 31 | Beverly Cowan | 9 | Daughter | — | Michigan |
| 32 | Carol Cowan | 5 | Daughter | — | Michigan |
| 33 | Barbara Cowan | 1 | Daughter | — | Michigan |
| 34 | Peter Johannes | 33 | Head | Arc Welder | Nebraska |
| 35 | Helen Johannes | 26 | Wife | — | Michigan |
| 36 | John Wiktor | 47 | Head | Lather | Poland |
| 37 | Helen Wiktor | 15 | Daughter | — | Michigan |
| 38 | Raymond Wiktor | 12 | Son | — | Michigan |
| 39 | Joseph Nacorazza | 28 | Head | Tool Maker | Wyoming |
| 40 | Georgia Nacorazza | 27 | 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)