JC
John Chapman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Murray-County, Oklahoma
Our Model Tree links this John Chapman across the 1920, 1930 and 1940 US Censuses in Murray-County, Oklahoma (XGBoost, ~Confirmed), with identified parents J & John — first a son (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Male
Son
Born: Oklahoma
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Murray-County, Oklahoma |
| Surname | Chapman |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Sulphur City |
| 1935 Residence (County) | Murray |
| Additional Details | |
| Occupation | Laborer |
| Industry | Surveyor |
| Class of Worker | PW |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Laborer |
| Township / Ward | Sulphur 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 |
|---|---|---|---|---|
| J Chapman | Head | — | 62 | ~1878 |
| John Chapman | Son | — | 28 | ~1912 |
| Bessie Chapman | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Murray, Oklahoma
Son, age 8
Murray, Oklahoma · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Arkansas |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1930
Murray, Oklahoma
Son, age 18
Murray, Oklahoma · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Arkansas |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Murray-County, Oklahoma
Son, age 28
Murray-County, Oklahoma · implied b. ~1912 — 3 household members
| Surname | Chapman |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Sulphur City |
| 1935 Residence (County) | Murray |
| Occupation | Laborer |
| Industry | Surveyor |
| Class of Worker | PW |
| Highest Grade | C 3 |
| 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 Chapman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father J Chapman (~0.92 confidence) and father John Chapman (~0.92 confidence) and mother Bessie Chapman (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
J Chapman
b. ~1878
Source father
● Household
· direct · ~0.92
Father
John Chapman
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Bessie Chapman
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Chapman
Son · 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 — Murray-County, Oklahoma
Open full size
1940 US Federal Census — Murray-County, Oklahoma
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-03312-00323)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | E. F. Wiggins | 55 | Head | Laborer | Missouri |
| 2 | Rebeca Wiggins | 42 | Wife | — | Texas |
| 3 | Nelson Eugene Wiggins | 23 | Son | Laborer | Texas |
| 4 | John Talley Wiggins | 14 | Son | — | Oklahoma |
| 5 | Lama Ruth Wiggins | 3 | Daughter | — | Oklahoma |
| 7 | Lonnie R. Earl | 39 | Head | — | Texas |
| 8 | Harold Earl | 18 | Son | Laborer | Oklahoma |
| 9 | Earnest Earl | 16 | Son | — | Oklahoma |
| 10 | Marjorie Earl | 14 | Daughter | — | Oklahoma |
| 11 | Norma Jean Earl | 12 | Daughter | — | Oklahoma |
| 12 | Jo Alice Earl | 10 | Daughter | — | Oklahoma |
| 13 | Bonnie Earl | 9 | Daughter | — | Oklahoma |
| 14 | Betty Jo Earl | 6 | Daughter | — | Oklahoma |
| 15 | J. H. Chapman | 62 | Head | Laborer | Georgia |
| 16 | Bessie B. Chapman | 59 | Wife | — | Arkansas |
| 17 | John Chapman THIS PERSON | 28 | Son | Laborer | Oklahoma |
| 18 | M. F. Mewlin | 54 | Head | Supervisor | Texas |
| 19 | Florence Mewlin | 48 | Wife | — | Oklahoma |
| 20 | Jack Mewlin | 19 | Son | Delivery Boy | Oklahoma |
| 21 | Rheta Mewlin | 16 | Daughter | — | Oklahoma |
| 22 | Marilee Mewlin | 13 | Daughter | — | Oklahoma |
| 24 | Harry Jennings | 51 | Head | Attendant | Texas |
| 25 | Cecil B. Jennings | 55 | Wife | Bookkeeper | Kansas |
| 26 | John Jefferson Jennings | 20 | Son | Attendant | Oklahoma |
| 27 | Helen Louise Jennings | 19 | Daughter | — | Oklahoma |
| 28 | Harry Richard Jennings | 17 | Son | — | Oklahoma |
| 29 | Elizabeth Belle Jennings | 79 | Mother-in-law | — | Missouri |
| 31 | J. B. Ray | 70 | Head | — | Missouri |
| 32 | Nellie P. Ray | 68 | Wife | — | Missouri |
| 33 | L. D. Sparks | 42 | Head | Laborer | Texas |
| 34 | Della Sparks | 33 | Wife | — | Oklahoma |
| 35 | El Wanda Sparks | 13 | Daughter | — | Oklahoma |
| 36 | Alma Sparks | 10 | Daughter | — | Oklahoma |
| 37 | Leila Sparks | 7 | Daughter | — | Oklahoma |
| 38 | J. C. Swan | 24 | Boarder | — | Mississippi |
| 40 | Wm. Taylor Halter | 48 | Head | — | Illinois |
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)