MC
Mary Cochran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jackson-County, Illinois
Our Model Tree links this Mary Cochran across the 1930 and 1940 US Censuses in Jackson-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Illinois |
| Surname | Cochran |
| Given Name | Mary Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Elkville |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Highest Grade | G-5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Elkville |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cochran | Daughter | — | 11 | ~1929 |
| Lana Cochran | Daughter | — | 3 | ~1937 |
| Barbara Cochran | Daughter | — | 5 | ~1935 |
| Henry Cochran | Head | — | 34 | ~1906 |
| Henry Cochran | Son | — | 12 | ~1928 |
| Donald Cochran | Son | — | 3 | ~1937 |
| Gene Cochran | Son | — | 7 | ~1933 |
| Delia Cochran | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Jackson, Illinois
Daughter, age 1
Jackson, Illinois · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochran |
| Given Name | Mary Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Oklahoma |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Jackson-County, Illinois
Daughter, age 11
Jackson-County, Illinois · implied b. ~1929 — 8 household members
| Surname | Cochran |
| Given Name | Mary Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Elkville |
| 1935 Residence (County) | Jackson |
| Highest Grade | G-5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Cochran across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cochran
Daughter · 1940 · age 11 · b. ~1929 · Illinois
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Sibling
Henry Cochran
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Cochran
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lana Cochran
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gene Cochran
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Cochran
Sibling · 1940 · age 5
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 — Jackson-County, Illinois
Open full size
1940 US Federal Census — Jackson-County, Illinois
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00814-00441)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joe Craig | 34 | Head | Coal Miner | Illinois |
| 42 | Emma Jean Craig | 32 | Wife | — | Illinois |
| 43 | Bobby Craig | 12 | Son | — | Illinois |
| 44 | Eugene Craig | 23 | Head | Coal Miner | Illinois |
| 45 | Marjory Craig | 21 | Wife | — | Illinois |
| 46 | Larry Craig | 1 | Son | — | Illinois |
| 47 | Henry Cochran | 34 | Head | Coal Miner | Illinois |
| 48 | Delia Cochran | 34 | Wife | — | Oklahoma |
| 49 | Henry Joe Cochran | 12 | Son | — | Illinois |
| 50 | Mary Alice Cochran THIS PERSON | 11 | Daughter | — | Illinois |
| 51 | Gene Allen Cochran | 7 | Son | — | Illinois |
| 52 | Barbara Ann Cochran | 5 | Daughter | — | Illinois |
| 53 | Donald Wayne Cochran | 3 | Son | — | Illinois |
| 54 | Lana Jane Cochran | 3 | Daughter | — | Illinois |
| 55 | Sherman Teape | 45 | Head | Coal Miner | Illinois |
| 56 | Ruth Teape | 43 | Wife | — | Illinois |
| 57 | Judith Teape | 14 | Daughter | — | Illinois |
| 58 | Audrey Teape | 9 | Daughter | — | Illinois |
| 59 | Abraham Teape | 6 | Son | — | Illinois |
| 60 | Sharon Teape | 1 | Daughter | — | Illinois |
| 61 | Hollis Combs | 42 | Head | Coal Miner | Illinois |
| 62 | Ray Combs | 14 | Son | — | Illinois |
| 63 | Mildred Combs | 13 | Daughter | — | Illinois |
| 64 | William Combs | 12 | Son | — | Illinois |
| 65 | Floyd Combs | 10 | Son | — | Illinois |
| 66 | Gertrude Darnell | 46 | Housekeeper | Housekeeper | Illinois |
| 67 | Odell Darnell | 15 | Son | — | Illinois |
| 68 | Dan Murray | 40 | Head | — | Illinois |
| 69 | Hiram Castleton | 42 | Head | Coal Miner | Illinois |
| 70 | Dora Castleton | 36 | Wife | — | England |
| 71 | George William Castleton | 13 | Son | — | Illinois |
| 72 | Marcella Castleton | 11 | Daughter | — | Illinois |
| 73 | Ray Harold Castleton | 9 | Son | — | Illinois |
| 74 | Howard Dean Castleton | 4 | Son | — | Illinois |
| 75 | James D. Mccallum | 55 | Head | Coal Miner | Illinois |
| 76 | Gertie Mccallum | 52 | Wife | — | Illinois |
| 77 | Maxine Mccallum | 26 | Daughter | — | Illinois |
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)