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Mary Blackburn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Caddo-County, Oklahoma
Our Model Tree links this Mary Blackburn across the 1930 and 1940 US Censuses in Caddo-County, Oklahoma (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 9-person household.
Age 44
b. ~1896
Female
Spouse
Born: Oklahoma
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Caddo-County, Oklahoma |
| Surname | Blackburn |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Connewango |
| 1935 Residence (County) | Caddo |
| Additional Details | |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Township / Ward | Connewango |
| Est. Birth Year | ~1896 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John White | Other | — | 64 | ~1876 |
| Dale Blackburn | Son | — | 4 | ~1936 |
| Edward Blackburn | Son | — | 26 | ~1914 |
| Wanda Blackburn | Daughter | — | 14 | ~1926 |
| Ramona Blackburn | Daughter | — | 11 | ~1929 |
| Vernon Blackburn | Son | — | 18 | ~1922 |
| D Blackburn | Son | — | 8 | ~1932 |
| Grover Blackburn | Head | — | 49 | ~1891 |
| Mary Blackburn | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Caddo, Oklahoma
Spouse, age 34
Caddo, Oklahoma · implied b. ~1896 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackburn |
| Given Name | Mary H |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| Age at First Marriage | 17 |
| Father's Birthplace | Oklahoma |
| Mother's Birthplace | Oklahoma |
| Can Read/Write | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Caddo-County, Oklahoma
Spouse, age 44
Caddo-County, Oklahoma · implied b. ~1896 — 9 household members
| Surname | Blackburn |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Connewango |
| 1935 Residence (County) | Caddo |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 Mary Blackburn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Blackburn
Spouse · 1940 · age 44 · b. ~1896 · Oklahoma
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Caddo-County, Oklahoma
Open full size
1940 US Federal Census — Caddo-County, Oklahoma
Page Contents
35 people indexed on this census page (nara:1940:m-t0627-03279-00457)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jack Turner | 14 | Son | — | Oklahoma |
| 42 | Anna Turner | 12 | Daughter | — | Oklahoma |
| 43 | Betty Turner | 10 | Daughter | — | Oklahoma |
| 44 | L. D. Turner | 8 | Son | — | Oklahoma |
| 45 | Bonnie Turner | 6 | Daughter | — | Oklahoma |
| 46 | Georgia Turner | 3 | Daughter | — | Oklahoma |
| 47 | Grover Blackburn | 49 | Head | Farmer | Oklahoma |
| 48 | Mary Blackburn THIS PERSON | 44 | Wife | — | Oklahoma |
| 49 | Edward Blackburn | 26 | Son | Farmer | Oklahoma |
| 50 | Vernon Blackburn | 18 | Son | Farmer | Oklahoma |
| 51 | Wanda Blackburn | 14 | Daughter | — | Oklahoma |
| 52 | Ramona Blackburn | 11 | Daughter | — | Oklahoma |
| 53 | D. C. Blackburn | 8 | Son | — | Oklahoma |
| 54 | Dale Blackburn | 4 | Son | — | Oklahoma |
| 55 | John White | 64 | Hired hand | Farmer | Arkansas |
| 56 | D. D. Milliken | 65 | Head | Farmer | Texas |
| 57 | Lizzie Milliken | 53 | Wife | — | Texas |
| 58 | Claud Powell | 34 | Head | Farmer | N Mexico |
| 59 | Florence Powell | 23 | Wife | — | Oklahoma |
| 60 | Dixie Powell | 3 | Daughter | — | Oklahoma |
| 61 | Claudine Powell | 2 | Daughter | — | Oklahoma |
| 62 | George Ingram | 50 | Head | Farmer | N Carolina |
| 63 | Della Ingram | 44 | Wife | — | Kansas |
| 64 | Floyd Ingram | 18 | Son | — | Oklahoma |
| 65 | Marie Ingram | 16 | Daughter | — | Oklahoma |
| 66 | Harrah Ingram | 12 | Daughter | — | Oklahoma |
| 67 | Chester Ingram | 9 | Son | — | Oklahoma |
| 68 | George Ingram | 7 | Son | — | Oklahoma |
| 69 | Rachael Ingram | 5 | Son | — | Oklahoma |
| 70 | Donald Ingram | 3 | Son | — | Oklahoma |
| 71 | Dean Ingram | 1 | Son | — | Oklahoma |
| 72 | William Phillips | 40 | Head | Laborer | Oklahoma |
| 73 | Willie Phillips | 13 | Son | — | Oklahoma |
| 74 | Joy Phillips | 13 | Daughter | — | Oklahoma |
| 75 | Christine Phillips | 9 | Daughter | — | Oklahoma |
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)