OS
Oscar Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Alabama
Our Model Tree links this Oscar Smith across the 1910, 1920, 1930 and 1940 US Censuses in St.-Clair-County, Alabama (XGBoost, ~Confirmed), with identified parents John & Lizzie — first a head (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Male
Head
Born: Alabama
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Alabama |
| Surname | Smith |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Beat |
| 1935 Residence (County) | St Clair |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 43 |
| Highest Grade | 1 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Occupation | Farmer |
| Township / Ward | Beat |
| Est. Birth Year | ~1904 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Oscar Smith | Head | — | 36 | ~1904 |
| Joe Smith | Son | — | 3 | ~1937 |
| Hampton Smith | Son | — | 6 | ~1934 |
| Hazel Smith | Spouse | — | 24 | ~1916 |
Census Appearances
1910
Jefferson, Alabama
Son, age 4
Jefferson, Alabama · implied b. ~1906 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1920
St Clair, …
Son, age 13
St Clair, Alabama · implied b. ~1907 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
St Clair, …
Head, age 24
St Clair, Alabama · implied b. ~1906 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Alabama |
| Age at First Marriage | 21 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
St.-Clair-County, Alabama
Head, age 36
St.-Clair-County, Alabama · implied b. ~1904 — 4 household members
| Surname | Smith |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Beat |
| 1935 Residence (County) | St Clair |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 43 |
| Highest Grade | 1 |
| 1935 Residence | Same place |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Oscar Smith across 4 US Census years (1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father John Smith (~0.92 confidence) and mother Lizzie Smith (~0.92 confidence) and father James Smith (~0.92 confidence) and mother Viola Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Smith
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Lizzie Smith
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
James Smith
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Viola Smith
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Smith
Head · 1940 · age 36 · b. ~1904 · Alabama
★ 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 — St.-Clair-County, Alabama
Open full size
1940 US Federal Census — St.-Clair-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00078-00188)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Eleanor Cosby | 10 | Daughter | — | Alabama |
| 42 | George Simmons | 31 | Head | Farmer | Alabama |
| 43 | Virgil Newton | 35 | Head | Farmer | Alabama |
| 44 | Jessie Newton | 38 | Wife | — | Alabama |
| 45 | Ephraim Newton | 7 | Son | — | Alabama |
| 46 | Kathryn Newton | 4 | Daughter | — | Alabama |
| 47 | John Smith | 40 | Head | Laborer | Alabama |
| 48 | Birdie Smith | 23 | Wife | — | Alabama |
| 49 | Albert Simmons | 68 | Head | Farmer | Alabama |
| 50 | Sallie Simmons | 69 | Wife | — | Alabama |
| 51 | Eliza Simmons | 60 | Sister | — | Alabama |
| 52 | Morris Hammond | 40 | Head | Farmer | Alabama |
| 53 | Mae Hammond | 33 | Wife | — | Alabama |
| 54 | Billie Joe Hammond | 15 | Son | — | Alabama |
| 55 | Jack Ray Hammond | 10 | Son | — | Alabama |
| 56 | Franklin Hammond | 8 | Son | — | Alabama |
| 57 | Alice Joe Hammond | 5 | Daughter | — | Alabama |
| 58 | Betty D. Hammond | 3 | Daughter | — | Alabama |
| 59 | L. O. Hammond | 2 | Son | — | Alabama |
| 60 | Kathryn Hammond | 0 | Daughter | — | Alabama |
| 61 | Robert Simmons | 64 | Head | Farmer | Alabama |
| 62 | Marcenie Simmons | 57 | Wife | — | Alabama |
| 63 | Clarence Simmons | 30 | Son | Laborer | Alabama |
| 64 | Lester Simmons | 21 | Son | Laborer | Alabama |
| 65 | Irene Simmons | 18 | Daughter | — | Alabama |
| 66 | Ellen Thornburg | 30 | Daughter | Laborer | Alabama |
| 67 | Oscar Smith THIS PERSON | 36 | Head | Farmer | Alabama |
| 68 | Hazel Smith | 24 | Wife | — | Alabama |
| 69 | Hampton Smith | 6 | Son | — | Alabama |
| 70 | Joe Smith | 3 | Son | — | Alabama |
| 71 | Rushie King | 45 | Head | Farmer | Alabama |
| 72 | Lula King | 42 | Wife | — | Alabama |
| 73 | Ruby King | 20 | Daughter | — | Alabama |
| 74 | James King | 16 | Son | — | Alabama |
| 75 | Mazie King | 11 | Daughter | — | Alabama |
| 76 | Mollie E. King | 7 | Daughter | — | Alabama |
| 77 | Nellie G. King | 6 | Daughter | — | Alabama |
| 78 | William King | 2 | Son | — | Alabama |
| 79 | Afford Kirby | 28 | Head | Laborer | Alabama |
| 80 | Eliza Kirby | 25 | Wife | — | Alabama |
Pedigree Summary
Oscar
Gen 1 · 4 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)