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John Alexander — 1940 US Census Record
Model Tree available1940 United States Federal Census · Prowers-County, Colorado
Our Model Tree links this John Alexander across the 1920, 1930 and 1940 US Censuses in Prowers-County, Colorado (XGBoost, ~Confirmed), with identified parents Elmer & Martha — first a head (b.~1899), then head of a 3-person household.
Age 41
b. ~1899
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Prowers-County, Colorado |
| Surname | Alexander |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Lamar city |
| 1935 Residence (County) | Prowers |
| Additional Details | |
| Occupation | credit association owner |
| Industry | Credit Association |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Credit Association Owner |
| Township / Ward | Lamar City |
| Est. Birth Year | ~1899 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Alexander | Head | — | 41 | ~1899 |
| John Alexander | Son | — | 8 | ~1932 |
| Katheryn Alexander | Spouse | — | 36 | ~1904 |
Census Appearances
1920
Prowers, Colorado
Son, age 20
Prowers, Colorado · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | Bookkeeper |
| Industry | Garage |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Prowers, Colorado
Head, age 30
Prowers, Colorado · implied b. ~1900 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 22 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | Bookkeeper |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 30.75 |
| Veteran | No |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Prowers-County, Colorado
Head, age 41
Prowers-County, Colorado · implied b. ~1899 — 3 household members
| Surname | Alexander |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Lamar city |
| 1935 Residence (County) | Prowers |
| Occupation | credit association owner |
| Industry | Credit Association |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Alexander across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Elmer Alexander (~0.92 confidence) and mother Martha Alexander (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Elmer Alexander
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Martha Alexander
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Alexander
Head · 1940 · age 41 · b. ~1899 · Colorado
★ 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 — Prowers-County, Colorado
Open full size
1940 US Federal Census — Prowers-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00474-00142)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lina Richard Lee Lining | 3 | son | — | Colorado |
| 42 | Virgil B. Bryant | 27 | head | Clerk | Kansas |
| 43 | Jessie Lou Bryant | 25 | wife | — | Texas |
| 44 | Henry Mc Kibbon | 44 | head | Automobile Dealer | Colorado |
| 45 | Ruby Mc Kibbon | 37 | wife | Seamstress | Colorado |
| 46 | Betty Jane Mc Kibbon | 17 | daughter | — | Colorado |
| 47 | Arleen Mc Kibbon | 15 | daughter | — | Colorado |
| 48 | Edward Mc Kibbon | 13 | son | — | Colorado |
| 49 | John Alexander THIS PERSON | 41 | head | Credit Association Owner | Colorado |
| 50 | Katheryn Alexander | 36 | wife | — | Colorado |
| 51 | John Jr. Alexander | 8 | son | — | Colorado |
| 52 | Carl Labertew | 31 | head | Store Operator | Iowa |
| 53 | Zeta Labertew | 27 | wife | — | New Mexico |
| 54 | Yvonne Labertew | 8 | daughter | — | Colorado |
| 55 | Donna Mae Labertew | 5 | daughter | — | Colorado |
| 56 | James Labertew | 3 | son | — | Kansas |
| 57 | Charles Burrows | 63 | head | Cement Finisher | Kansas |
| 58 | Clara Burrows | 61 | wife | — | Iowa |
| 59 | John Trefz | 52 | head | Chief Engineer | Germany |
| 60 | Mary Trefz | 49 | wife | — | West Virginia |
| 61 | Erwin Stahl | 26 | step son | Clerk | South Dakota |
| 62 | Howard Trefz | 20 | son | Laborer | Colorado |
| 63 | Irene Trefz | 17 | daughter | — | Colorado |
| 64 | Monroe Jasper | 34 | head | Barber | New Mexico |
| 65 | Gladys Jasper | 30 | wife | — | Illinois |
| 66 | Harold Higgins | 40 | head | Mechanic | Iowa |
| 67 | Mary Alice Higgins | 37 | wife | — | Iowa |
| 68 | Floyd Higgins | 14 | son | — | Iowa |
| 69 | Mildred Higgins | 13 | daughter | — | Iowa |
| 70 | Everett Kelley | 26 | head | Laborer | Kansas |
| 71 | Alice Kelley | 26 | wife | — | Missouri |
| 72 | James Kelley | 4 | son | — | Colorado |
| 73 | Janis Kelley | 3 | son | — | Colorado |
| 74 | Annie Buckworth | 67 | head | — | Kansas |
| 75 | Leland Good | 46 | head | Truck Owner | Ohio |
| 76 | Ruby Good | 33 | wife | — | Colorado |
| 77 | Joyce Good | 5 | daughter | — | Colorado |
| 78 | Jack Good | 4 | son | — | Colorado |
| 79 | Truman E. Patrick | 35 | head | Salesman | Missouri |
| 80 | Georgia B. Patrick | 34 | wife | — | Missouri |
Pedigree Summary
John
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)