IS
Ira Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mccurtain-County, Oklahoma
Our Model Tree links this Ira Smith across the 1920, 1930 and 1940 US Censuses in Mccurtain-County, Oklahoma (XGBoost, ~Confirmed), with identified parents Jim & Willie — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Oklahoma
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mccurtain-County, Oklahoma |
| Surname | Smith |
| Given Name | Ira |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Eagle township |
| 1935 Residence (County) | McCurtain |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Farmer |
| Township / Ward | Eagle Township |
| Est. Birth Year | ~1909 |
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 Ira | Age | Birth yr |
|---|---|---|---|---|
| Jim Smith | Head | — | 70 | ~1870 |
| Billy Smith | Other | — | 9 | ~1931 |
| Allie Smith | Son | — | 34 | ~1906 |
| Ira Smith | Son | — | 31 | ~1909 |
| Ida Smith | Spouse | — | 63 | ~1877 |
Census Appearances
1920
Mccurtain, Oklahoma
Other, age 9
Mccurtain, Oklahoma · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Isaac |
| Relationship to Head | Grand son |
| Sex | M |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Occupation | none |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
Son, age 19
Mccurtain, Oklahoma · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Occupation | Farmer |
| Industry | helper |
| Class of Worker | VVV |
| Can Read/Write | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Mccurtain-County, Oklahoma
Son, age 31
Mccurtain-County, Oklahoma · implied b. ~1909 — 5 household members
| Surname | Smith |
| Given Name | Ira |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Eagle township |
| 1935 Residence (County) | McCurtain |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Ira Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jim Smith (~0.92 confidence) and father Willie Murray (~0.92 confidence) and mother Ida Smith (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jim Smith
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Willie Murray
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Ida Smith
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ira Smith
Son · 1940 · age 31 · b. ~1909 · Oklahoma
★ You are viewing this record
Sibling
Allie Smith
Sibling · 1940 · age 34
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 — Mccurtain-County, Oklahoma
Open full size
1940 US Federal Census — Mccurtain-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03309-00234)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alpha Fey Jewel | 9 | daughter | — | Oklahoma |
| 2 | Ida Wilson | 70 | Mother | — | Arkansas |
| 3 | Albert Bailey | 39 | Lodger | — | Arkansas |
| 4 | Jim Smith | 70 | Head | Farmer | North Carolina |
| 5 | Ida B. Smith | 63 | wife | — | Arkansas |
| 6 | Ira Smith THIS PERSON | 31 | son | Farmer | Oklahoma |
| 7 | Allie Smith | 34 | son | — | Oklahoma |
| 8 | Billy Joe Smith | 9 | grandson | — | Oklahoma |
| 9 | Nora Piper | 56 | Head | — | Texas |
| 10 | Amos Piper | 27 | son | Cutting Logs | Oklahoma |
| 11 | R. D. Piper | 25 | son | Cutting Logs | Oklahoma |
| 12 | Marie Piper | 17 | daughter | — | Oklahoma |
| 13 | Freddie Piper | 22 | daughter | — | Oklahoma |
| 14 | Frankie Piper | 5 | grandson | — | Oklahoma |
| 15 | Betty Cunningham | 11 | Lodger | — | Oklahoma |
| 16 | Minnie Johnson | 20 | Lodger | Maid | Arkansas |
| 17 | Hallie Lawrence | 30 | Head | Laborer | Arkansas |
| 18 | Ruth Lawrence | 27 | wife | — | Arkansas |
| 19 | Patsy Lawrence | 5 | daughter | — | Oklahoma |
| 20 | Willie Spikes | 36 | Head | Laborer | Mississippi |
| 21 | Irene Spikes | 37 | wife | — | Louisiana |
| 22 | Freddie Ballard | 18 | step son | — | Louisiana |
| 23 | Ruby Lee Ballard | 15 | daughter | — | Louisiana |
| 24 | Celoy Ballard | 13 | son | — | Louisiana |
| 25 | Willie V. Spikes | 6 | daughter | — | Louisiana |
| 26 | Juanita Spikes | 2 | granddaughter | — | Louisiana |
| 27 | Ruth Spikes | 0 | granddaughter | — | Oklahoma |
| 28 | John N. Vanwinkle | 28 | Head | Labour | Oklahoma |
| 29 | Edna Mae Vanwinkle | 22 | wife | — | New Mexico |
| 30 | Gudrun Vanwinkle | 3 | daughter | — | New Mexico |
| 31 | Grover Grigby | 23 | Head | Labour | Oklahoma |
| 32 | Edna Grigby | 24 | wife | — | Mississippi |
| 33 | Virginia Grigby | 3 | daughter | — | Oklahoma |
| 34 | Donald Grigby | 1 | son | — | Oklahoma |
| 35 | Grover Grisby | 51 | Head | Farmer | Texas |
| 36 | Castelle Grisby | 54 | wife | — | Texas |
| 37 | Hazel Grisby | 30 | daughter | — | Texas |
| 38 | P. J. Lawrence | 58 | Head | Labour | Missouri |
| 39 | Emma Lawrence | 53 | wife | — | Missouri |
| 40 | Troy Lawrence | 22 | son | — | Oklahoma |
Related Census Records
Pedigree Summary
Ira + 1 sibling
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)