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John Alexander — 1940 US Census Record
Model Tree available1940 United States Federal Census · Tillman-County, Oklahoma
Our Model Tree links this John Alexander across the 1920, 1930 and 1940 US Censuses in Tillman-County, Oklahoma (XGBoost, ~Confirmed), with identified parents Sidney & Lee — first a head (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Male
Head
Born: Oklahoma
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Tillman-County, Oklahoma |
| Surname | Alexander |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Frederick City |
| Additional Details | |
| Occupation | Trucker |
| Industry | Private line |
| Class of Worker | OA |
| Hours Worked | 10 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Trucker |
| Township / Ward | Frederick City |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| Betty Alexander | Daughter | — | 4 | ~1936 |
| John Alexander | Head | — | 28 | ~1912 |
| Gladys Alexander | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Tillman, Oklahoma
Son, age 7
Tillman, Oklahoma · implied b. ~1913 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Texas |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1930
Tillman, Oklahoma
Son, age 18
Tillman, Oklahoma · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | John B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Texas |
| Occupation | Helper |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Tillman-County, Oklahoma
Head, age 28
Tillman-County, Oklahoma · implied b. ~1912 — 3 household members
| Surname | Alexander |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Frederick City |
| Occupation | Trucker |
| Industry | Private line |
| Class of Worker | OA |
| Hours Worked | 10 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 Sidney Alexander (~0.92 confidence) and mother Lee Alexander (~0.92 confidence) and father Lee Alexander (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Sidney Alexander
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Lee Alexander
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Lee Alexander
b. ~1875
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Alexander
Head · 1940 · age 28 · b. ~1912 · Oklahoma
★ 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 — Tillman-County, Oklahoma
Open full size
1940 US Federal Census — Tillman-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03335-00529)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ella J. Strickland | 4 | daughter | — | Oklahoma |
| 42 | Jerry Strickland | 2 | son | — | Oklahoma |
| 43 | James L. Strickland | 1 | son | — | Oklahoma |
| 44 | John G. Willis | 52 | Head | Trucker | Arkansas |
| 45 | Butta V. Willis | 49 | Wife | — | Oklahoma |
| 46 | Lora Jean Willis | 14 | daughter | — | Oklahoma |
| 47 | Leslie G. Schreider | 29 | son-in-law | Truck Driver | Texas |
| 48 | Celestia Schreider | 27 | daughter | — | Oklahoma |
| 49 | Aaron J. Willis | 30 | Head | Truck Driver | Texas |
| 50 | Mary G. Willis | 24 | Wife | — | Texas |
| 51 | Richard L. Willis | 7 | son | — | Texas |
| 52 | Becky E. Willis | 6 | daughter | — | Texas |
| 53 | James L. Bowman | 30 | Head | Truck Driver | Oklahoma |
| 54 | Luvina Bowman | 30 | Wife | Dressmaker | Texas |
| 55 | James E. Willis | 45 | Head | Car Salesman | Oklahoma |
| 56 | Elma G. Willis | 30 | Wife | — | Oklahoma |
| 57 | Iris Jean Willis | 5 | daughter | — | Oklahoma |
| 58 | Peggy J. Mccauley | 6 | daughter | — | Oklahoma |
| 59 | Walter Fife | 59 | Head | Salesman | Arkansas |
| 60 | Renehurt Eddleman | 23 | Head | Typist | Oklahoma |
| 61 | Mary L. Eddleman | 22 | Wife | — | Oklahoma |
| 62 | Rinehart L. Eddleman | 2 | son | — | Oklahoma |
| 63 | John H. Eddleman | 0 | son | — | Oklahoma |
| 64 | Thomas A. Cooper | 48 | Head | Jailor | Alabama |
| 65 | Mary Cooper | 49 | Wife | — | Texas |
| 66 | Thomas A. Jr. Cooper | 22 | son | Salesman | Oklahoma |
| 67 | Mauriel Cooper | 19 | daughter-in-law | — | Oklahoma |
| 68 | Billy E. Cooper | 15 | son | Clerk | Oklahoma |
| 69 | John W. Alexander THIS PERSON | 28 | Head | Trucker | Oklahoma |
| 70 | Gladys R. Alexander | 26 | Wife | — | Oklahoma |
| 71 | Betty Ann Alexander | 4 | daughter | — | Oklahoma |
| 72 | Will J. Dickson | 59 | Head | Lineman | Alabama |
| 73 | Myrtle Dickson | 54 | Wife | — | Kansas |
| 74 | Margaret Dickson | 13 | daughter | — | Oklahoma |
| 75 | Connie Haynes | 42 | Head | Beauty Operator | Texas |
| 76 | Mattie J. Haynes | 18 | daughter | — | Oklahoma |
| 77 | L. Maurine Haynes | 16 | daughter | — | Oklahoma |
| 78 | Lloyd O. Eales | 41 | Head | Proprietor | Kansas |
| 79 | Florence M. Eales | 36 | Wife | — | Texas |
| 80 | Lloyd G. Eales | 15 | son | — | California |
Pedigree Summary
John
Gen 1 · 3 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)