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Mary Blackburn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · White-County, Indiana
Our Model Tree links this Mary Blackburn across the 1930 and 1940 US Censuses in White-County, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 6-person household.
Age 44
b. ~1896
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | White-County, Indiana |
| Surname | Blackburn |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Monon |
| 1935 Residence (County) | White |
| Additional Details | |
| Class of Worker | H |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Monon |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Blackburn | Head | — | 47 | ~1893 |
| Mary Blackburn | Daughter | — | 3 | ~1937 |
| Kathryn Blackburn | Daughter | — | 31 | ~1909 |
| Mary Blackburn | Spouse | — | 44 | ~1896 |
| Phyllis Blackburn | Daughter | — | 12 | ~1928 |
| John Blackburn | Son | — | 10 | ~1930 |
Census Appearances
1930
White, Indiana
Spouse, age 34
White, Indiana · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackburn |
| Given Name | Mary T |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 21 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
White-County, Indiana
Spouse, age 44
White-County, Indiana · implied b. ~1896 — 6 household members
| Surname | Blackburn |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Monon |
| 1935 Residence (County) | White |
| Class of Worker | H |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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.
Show:
This person
Anchor record
Mary Blackburn
Spouse · 1940 · age 44 · b. ~1896 · Indiana
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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 — White-County, Indiana
Open full size
1940 US Federal Census — White-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01110-00781)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Valentine | 55 | Head | Farmer | Ohio |
| 2 | Richard Valentine | 14 | Son | — | Illinois |
| 3 | Olive May Valentine | 9 | Daughter | — | Illinois |
| 4 | Ed John | 66 | Head | Day Laborer | Ohio |
| 5 | Robert John | 19 | Son | Farm Hand | Indiana |
| 6 | Ella Hulies | 65 | Head | — | Ohio |
| 7 | James Blackburn | 47 | Head | Truck Driver | Indiana |
| 8 | Mary Blackburn THIS PERSON | 44 | Wife | — | Indiana |
| 9 | Kathryn Blackburn | 31 | Daughter | — | Indiana |
| 10 | Phyllis Blackburn | 12 | Daughter | — | Indiana |
| 11 | John Blackburn | 10 | Son | — | Indiana |
| 12 | Mary Adeline Blackburn | 3 | Daughter | — | Indiana |
| 13 | Theodore Pauley | 26 | Head | W.P.A. | Indiana |
| 14 | Esther Pauley | 23 | Wife | — | Indiana |
| 15 | Johnny Pauley | 6 | Son | — | Indiana |
| 16 | Jane Pauley | 4 | Daughter | — | Indiana |
| 17 | Kathryn Pauley | 68 | Mother | — | West Virginia |
| 18 | Charles Pauley | 24 | Brother | Tile | Indiana |
| 19 | Joe Paulin | 33 | Head | Operator | West Virginia |
| 20 | Elsie Paulin | 26 | Wife | — | Indiana |
| 21 | Jimmie Paulin | 9 | Son | — | Indiana |
| 22 | Joann Paulin | 5 | Daughter | — | Indiana |
| 23 | Dorothy Paulin | 4 | Daughter | — | Indiana |
| 24 | Mary Ruth Paulin | 2 | Daughter | — | Indiana |
| 25 | Donald Paulin | 1 | Son | — | Indiana |
| 26 | John Newbold | 68 | Head | — | Indiana |
| 27 | Emery Newbold | 44 | Son | Salesman | Indiana |
| 28 | Bessie Newbold | 39 | Daughter-in-law | — | Indiana |
| 29 | Katherine Dodge | 75 | Head | Washer | Scotland |
| 30 | Annie B. Richardson | 64 | Head | — | Indiana |
| 31 | Apel Richardson | 45 | Daughter | Clerk | Indiana |
| 32 | Ethel Richardson | 35 | Daughter | Librarian | Indiana |
| 33 | Dale Richardson | 24 | Son | Acting Postmaster | Indiana |
| 34 | Kenneth Brown | 34 | Head | Farmer | Indiana |
| 35 | Mary O. Brown | 27 | Wife | — | Indiana |
| 36 | A. J. Brown | 70 | Head | Farmer | Illinois |
| 37 | Margaret Brown | 67 | Wife | — | Ohio |
| 38 | Donald Brown | 32 | Son | Farm Hand | Indiana |
| 39 | Henry Hammel | 42 | Head | Truck Driver | Indiana |
| 40 | Emma Hammel | 41 | Wife | — | Indiana |
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)