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John Cowan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Clair-County, Missouri
Our Model Tree links this John Cowan across the 1930 and 1940 US Censuses in St.-Clair-County, Missouri (XGBoost, ~Confirmed) — first a head (b.~1894), then head of a 9-person household.
Age 46
b. ~1894
Male
Head
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Missouri |
| Surname | Cowan |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Chalk Level Township |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Farmer |
| Township / Ward | Chalk Level Township |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Cowan | Other | — | 79 | ~1861 |
| Harry Cowan | Son | — | 18 | ~1922 |
| Nora Cowan | Daughter | — | 13 | ~1927 |
| Minnie Cowan | Daughter | — | 7 | ~1933 |
| Shirley Cowan | Daughter | — | 2 | ~1938 |
| John Cowan | Son | — | 8 | ~1932 |
| Susan Cowan | Spouse | — | 43 | ~1897 |
| John Cowan | Head | — | 46 | ~1894 |
| Mary Cowan | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Cedar, Missouri
Head, age 35
Cedar, Missouri · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cowan |
| Given Name | John W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 22 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Gen Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Clair-County, Missouri
Head, age 46
St.-Clair-County, Missouri · implied b. ~1894 — 9 household members
| Surname | Cowan |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Chalk Level Township |
| 1935 Residence (County) | St. Clair |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 46 · b. ~1894 · Missouri
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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 — St.-Clair-County, Missouri
Open full size
1940 US Federal Census — St.-Clair-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02145-00870)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Earl J. Sr. Martin | 50 | Head | Farmer | Missouri |
| 2 | Ruth Martin | 33 | Wife | — | Missouri |
| 3 | Imogene M. Martin | 12 | Daughter | — | Missouri |
| 4 | Jay P. Martin | 11 | Son | — | Missouri |
| 5 | Earl J. Jr. Martin | 9 | Son | — | Missouri |
| 6 | Levina R. Martin | 7 | Daughter | — | Missouri |
| 7 | Seth T. Cogle | 50 | Head | Farmer | Missouri |
| 8 | Mable M. Cogle | 47 | Wife | — | Missouri |
| 9 | Prince P. Chiles | 55 | Head | Farmer | Missouri |
| 10 | Dorothy M. E. Chiles | 24 | Wife | — | Wyoming |
| 11 | Edna M. Chiles | 7 | Daughter | — | Missouri |
| 12 | Ralph E. Chiles | 1 | Son | — | Missouri |
| 13 | Jakob Chiles | 75 | Father | — | Iowa |
| 14 | John H. Cowan THIS PERSON | 46 | Head | Farmer | Missouri |
| 15 | Susan Cowan | 43 | Wife | — | Missouri |
| 16 | Harry H. Cowan | 18 | Son | Farm Laborer | Missouri |
| 17 | Mary M. Cowan | 15 | Daughter | — | Missouri |
| 18 | Nora M. Cowan | 13 | Daughter | — | Missouri |
| 19 | John J. Cowan | 8 | Son | — | Missouri |
| 20 | Minnie I. Cowan | 7 | Daughter | — | Missouri |
| 21 | Shirley Cowan | 2 | Daughter | — | Missouri |
| 22 | John E. Cowan | 79 | Father | — | Kentucky |
| 23 | D. Ray Randall | 24 | Head | Farmer | Missouri |
| 24 | Agnes F. Randall | 21 | Wife | — | Kansas |
| 25 | Dennie R. Randall | 0 | Daughter | — | Missouri |
| 26 | Richard P. Chiles | 51 | Head | Farmer | Missouri |
| 27 | Ida M. Chiles | 43 | Wife | — | Kansas |
| 28 | Helen J. Chiles | 21 | Daughter | — | Missouri |
| 29 | Donald L. Chiles | 19 | Son | Farm Laborer | Missouri |
| 30 | Richard W. Chiles | 9 | Son | — | Missouri |
| 31 | Earl L. Chiles | 6 | Son | — | Missouri |
| 32 | John A. Cox | 35 | Head | Farmer | Missouri |
| 33 | Idella Cox | 24 | Wife | — | Missouri |
| 34 | Harold K. Cox | 1 | Son | — | Missouri |
| 35 | James N. Miller | 59 | Head | Farmer | Missouri |
| 36 | Emma B. Miller | 53 | Wife | — | Missouri |
| 37 | Harley W. Tuter | 34 | Head | Farmer | Missouri |
| 38 | Edna E. Tuter | 28 | Wife | — | Missouri |
| 39 | James A. Tuter | 4 | Son | — | Missouri |
| 40 | B. Joan Tuter | 2 | Daughter | — | Missouri |
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)