JD
James Davidson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Grady-County, Oklahoma
Our Model Tree links this James Davidson across the 1920, 1930 and 1940 US Censuses in Grady-County, Oklahoma (XGBoost, ~Confirmed), with identified parents Nathan & Sara — first a son (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Male
Son
Born: Oklahoma
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grady-County, Oklahoma |
| Surname | Davidson |
| Given Name | James Stevens |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Grady |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Income (1939) | 360 |
| Highest Grade | No 8 |
| 1935 Residence | Oklahoma |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Laborer |
| Township / Ward | Pocassett Twp |
| Est. Birth Year | ~1920 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Nathan Davidson | Head | — | 65 | ~1875 |
| Austin Davidson | Son | — | 14 | ~1926 |
| James Davidson | Son | — | 20 | ~1920 |
| Ira Davidson | Son | — | 18 | ~1922 |
| Sara Davidson | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Grady, Oklahoma
Son, age
Grady, Oklahoma · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | James W. J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1930
Grady, Oklahoma
Son, age 10
Grady, Oklahoma · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | James S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Grady-County, Oklahoma
Son, age 20
Grady-County, Oklahoma · implied b. ~1920 — 5 household members
| Surname | Davidson |
| Given Name | James Stevens |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Grady |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Income (1939) | 360 |
| Highest Grade | No 8 |
| 1935 Residence | Oklahoma |
| 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 James Davidson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nathan Davidson (~0.92 confidence) and mother Sara Davidson (~0.92 confidence) and mother Bessie Davidson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nathan Davidson
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Sara Davidson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Bessie Davidson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Davidson
Son · 1940 · age 20 · b. ~1920 · Oklahoma
★ You are viewing this record
Sibling
Austin Davidson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ira Davidson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Grady-County, Oklahoma
Open full size
1940 US Federal Census — Grady-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03295-00806)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Shaw | 88 | Mother | — | Arkansas |
| 2 | Sherwood Brown | 14 | Grand-son | — | Oklahoma |
| 3 | George W. Vogel | 40 | Head | Farmer | Oklahoma |
| 4 | Anna Vogel | 39 | Wife | — | Minnesota |
| 5 | Lilas Vogel | 17 | Daughter | — | Oklahoma |
| 6 | Louella Vogel | 16 | Daughter | — | Oklahoma |
| 7 | Lorene Vogel | 15 | Daughter | — | Oklahoma |
| 8 | George L. Vogel | 13 | Son | — | Oklahoma |
| 9 | Robert C. Steele | 22 | Head | Farmer | Oklahoma |
| 10 | Evelyn Steele | 20 | Wife | — | Oklahoma |
| 11 | Robert Dwayne Steele | 1 | Son | — | Oklahoma |
| 12 | Nathan P. Davidson | 65 | Head | Trader & Sales | Missouri |
| 13 | Sara Elizabeth Davidson | 60 | Wife | — | Missouri |
| 14 | James Stevens Davidson THIS PERSON | 20 | Son | Laborer | Oklahoma |
| 15 | Ira Lee Davidson | 18 | Son | Laborer | Oklahoma |
| 16 | Austin Davidson | 14 | Son | — | Oklahoma |
| 17 | James A. Whitson | 30 | Head | Truck Driver | Oklahoma |
| 18 | Mary B. Whitson | 25 | Wife | — | Oklahoma |
| 19 | Jimmie Whitson | 6 | Son | — | Oklahoma |
| 20 | Naomi Whitson | 5 | Daughter | — | Oklahoma |
| 21 | Merylin Whitson | 2 | Daughter | — | Oklahoma |
| 22 | Charles T. Matthews | 77 | Head | — | Illinois |
| 23 | Roy A. Souders | 36 | Head | Farmer | Missouri |
| 24 | Fannie B. Souders | 38 | Wife | — | Texas |
| 25 | Oleta Fern Souders | 11 | Daughter | — | Oklahoma |
| 26 | Roy Junior Souders | 9 | Son | — | Oklahoma |
| 27 | Robert Souders | 7 | Son | — | Oklahoma |
| 28 | John W. Robertson | 72 | Head | Farmer | Kansas |
| 29 | Mary Robertson | 66 | Wife | — | Ohio |
| 30 | Stephen O. B. Felton | 63 | Head | Farmer | Minnesota |
| 31 | Louise Marcus Felton | 67 | Lodger | — | Arkansas |
| 32 | Virginia Felton | 64 | Lodger | — | Arkansas |
| 33 | Ray W. Hornburger | 54 | Head | Farmer | Iowa |
| 34 | Ollie Hornburger | 46 | Wife | — | Missouri |
| 35 | Kenneth Hornburger | 25 | Son | Carpenter Helper | Oklahoma |
| 36 | Ceble Daughety | 28 | Daughter | House Keeper | Oklahoma |
| 37 | Patsy Ruth Daughety | 8 | Grand-Daughter | — | Oklahoma |
| 38 | Bobby Daughety | 5 | Grand-Son | — | Oklahoma |
| 39 | Elmer L. Steelman | 32 | Head | Farmer | New Mexico |
| 40 | Bessie B. Steelman | 30 | Wife | — | Texas |
Pedigree Summary
James + 2 siblings
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)