JC
John Cowan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Harvey-County, Kansas
Our Model Tree links this John Cowan across the 1930 and 1940 US Censuses in Harvey-County, Kansas (XGBoost, ~Confirmed) — first a head (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Harvey-County, Kansas |
| Surname | Cowan |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Sedgwick Township |
| 1935 Residence (County) | Harvey |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Farmer |
| Township / Ward | Sedgwick Township |
| Est. Birth Year | ~1906 |
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 |
|---|---|---|---|---|
| John Cowan | Head | — | 34 | ~1906 |
| Blanche Cowan | Spouse | — | 37 | ~1903 |
| Lois Cowan | Daughter | — | 4 | ~1936 |
| Bruce Cowan | Son | — | 1 | ~1939 |
| Allie Cowan | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Harvey, Kansas
Son, age 22
Harvey, Kansas · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cowan |
| Given Name | John S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Harvey-County, Kansas
Head, age 34
Harvey-County, Kansas · implied b. ~1906 — 5 household members
| Surname | Cowan |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Sedgwick Township |
| 1935 Residence (County) | Harvey |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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.
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This person
Anchor record
John Cowan
Head · 1940 · age 34 · b. ~1906 · Kansas
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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 — Harvey-County, Kansas
Open full size
1940 US Federal Census — Harvey-County, Kansas
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01234-01075)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Silas Watts | 78 | Father in law | Land Agent | Indiana |
| 2 | Willard L. Beverance | 77 | Head | Retired Farmer | New York |
| 3 | Mary R. Beverance | 78 | Wife | House Wife | New York |
| 4 | Laura Williams | 68 | house help | House Servant | Illinois |
| 5 | Ross E. Cooprider | 41 | Head | Farmer | Kansas |
| 6 | Carrie Cooprider | 41 | Wife | House Wife | Oklahoma |
| 7 | Don Donovan | 11 | Son | — | Kansas |
| 8 | Anna J. Donovan | 6 | Daughter | — | Kansas |
| 9 | Charles S. Grattan | 49 | Head | Farmer | Kansas |
| 10 | Maude G. Grattan | 51 | Wife | House Wife | Kansas |
| 11 | Donald E. Grattan | 12 | Son | — | Kansas |
| 12 | U. G. Farmer | 58 | Farm help | Farm Help | Missouri |
| 13 | Emma L. Grattan | 78 | Head | — | Indiana |
| 14 | Myra B. Grattan | 51 | Daughter | House Help | Kansas |
| 15 | Alton R. Challender | 61 | Head | Farmer | Illinois |
| 16 | Bell E. Challender | 52 | Wife | House Wife | New York |
| 17 | Willard A. Challender | 26 | Son | Farmer | Kansas |
| 18 | Mae E. Walker | 76 | Head | Retired Farmer | Ohio |
| 19 | Cora Walker | 74 | Wife | House Wife | Ohio |
| 20 | Glenn Walker | 50 | Son | Partner | Kansas |
| 21 | Virgil Walker | 33 | Son | Farm Help | Kansas |
| 22 | Jake Q. Schowalter | 60 | Head | Farmer | Germany |
| 23 | William Miles | 42 | Farm help | Farm Help | Missouri |
| 24 | Pauline Miles | 38 | Wife | House Keeper | Missouri |
| 25 | James Miles | 18 | Son | Farm Help | Missouri |
| 26 | Clayton Miles | 16 | Son | Farm Work | Missouri |
| 27 | Eugene Miles | 14 | Son | — | Missouri |
| 28 | Earl Q. Konoman | 25 | Head | Farmer | Kansas |
| 29 | Dorothy Konoman | 27 | Wife | House Wife | Kansas |
| 30 | Dorothy J. Konoman | 3 | Daughter | — | Kansas |
| 31 | Sylvia R. Konoman | 1 | Daughter | — | Kansas |
| 32 | John S. Cowan THIS PERSON | 34 | Head | Farmer | Kansas |
| 33 | Blanche Cowan | 37 | Wife | House Wife | Indiana |
| 34 | Allie Cowan | 7 | Daughter | — | Kansas |
| 35 | Lois Cowan | 4 | Daughter | — | Kansas |
| 36 | Bruce Cowan | 1 | Son | — | Kansas |
| 37 | Mrs. O. Minich | 80 | Head | — | Illinois |
| 38 | Alpha Minich | 47 | Daughter | House Keeper | Kansas |
| 39 | Scott Hobble | 67 | Brother | — | Illinois |
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)