JB
John Blackwell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lauderdale-County, Mississippi
Our Model Tree links this John Blackwell across the 1920, 1930 and 1940 US Censuses in Lauderdale-County, Mississippi (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 3-person household.
Age 55
b. ~1885
Male
Head
Born: Mississippi
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lauderdale-County, Mississippi |
| Surname | Blackwell |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 4 |
| 1935 Residence (County) | Lauderdale |
| Additional Details | |
| Occupation | Farm Work |
| Industry | On a farm |
| Class of Worker | OA |
| Hours Worked | 25 |
| Income (1939) | 0 |
| Highest Grade | G 5 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Occupation | Farm Work |
| Township / Ward | Beat 4 |
| Est. Birth Year | ~1885 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| J Blackwell | Son | — | 20 | ~1920 |
| John Blackwell | Head | — | 55 | ~1885 |
| Felix Blackwell | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Lauderdale, Mississippi
Head, age 37
Lauderdale, Mississippi · implied b. ~1883 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | John T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1930
Lauderdale, Mississippi
Head, age 47
Lauderdale, Mississippi · implied b. ~1883 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Age at First Marriage | 23 |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Lauderdale-County, Mississippi
Head, age 55
Lauderdale-County, Mississippi · implied b. ~1885 — 3 household members
| Surname | Blackwell |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 4 |
| 1935 Residence (County) | Lauderdale |
| Occupation | Farm Work |
| Industry | On a farm |
| Class of Worker | OA |
| Hours Worked | 25 |
| Income (1939) | 0 |
| Highest Grade | G 5 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 John Blackwell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Blackwell
Head · 1940 · age 55 · b. ~1885 · Mississippi
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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 — Lauderdale-County, Mississippi
Open full size
1940 US Federal Census — Lauderdale-County, Mississippi
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02040-00635)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John F. Blackwell THIS PERSON | 55 | Head | Farm Work | Mississippi |
| 42 | Felix Blackwell | 55 | Wife | H Wife | Mississippi |
| 43 | J. L. Blackwell | 20 | Son | Farm Work | Mississippi |
| 44 | Finn Meadow | 42 | Head | Merchant | Mississippi |
| 45 | Mary Meadow | 40 | Wife | H Wife | Mississippi |
| 46 | F. J. Burks | 78 | Head | Farmer | Alabama |
| 47 | W. B. Burks | 43 | Son | Farmer | Alabama |
| 48 | Leonard Brown | 25 | Head | Farmer | Mississippi |
| 49 | Katherine Brown | 21 | Wife | H Wife | Mississippi |
| 50 | Thomas J. Ellis | 63 | Head | Farmer | Mississippi |
| 51 | Julia Ellis | 55 | Wife | H Wife | Mississippi |
| 52 | Hazel Ellis | 36 | Daughter | Teacher | Mississippi |
| 53 | Annetta Ellis | 31 | Daughter | Teacher | Mississippi |
| 54 | Pat Adair | 30 | Head | Bus Driver | Mississippi |
| 55 | Elandra Adair | 27 | Wife | H Wife | Mississippi |
| 56 | Patsy Adair | 5 | Daughter | — | Mississippi |
| 57 | Clarence Adams | 28 | Head | W.P.A | Mississippi |
| 58 | Juanita Adams | 25 | Wife | H.W. | Mississippi |
| 59 | William R. White | 46 | Head | W.P.A | Mississippi |
| 60 | Elbert Daniels | 43 | Head | Night Watchman | Alabama |
| 61 | Bessie Daniels | 41 | Wife | H. Wife | Alabama |
| 62 | Rudolph Daniels | 19 | Son | School | Alabama |
| 63 | Cleotis Daniels | 17 | Son | Farmer | Alabama |
| 64 | Faye Daniels | 15 | Daughter | School | Mississippi |
| 65 | Marvin Taylor | 37 | Head | Farmer | Mississippi |
| 66 | Nora Taylor | 32 | Wife | H Wife | Alabama |
| 67 | Walter Fowler | 39 | Head | Wage Hand | Mississippi |
| 68 | Mamie Fowler | 39 | Wife | Home Wife | Mississippi |
| 69 | Robert Fowler | 18 | Son | Wage Hand | Mississippi |
| 70 | Willie Fowler | 16 | Son | Farmer | Mississippi |
| 71 | Invertis Fowler | 14 | Son | S. | Mississippi |
| 72 | Mamie Lee Fowler | 12 | Daughter | S. | Mississippi |
| 73 | Snooks Fowler | 3 | Son | — | Mississippi |
| 74 | Johnnie Fowler | 2 | Son | — | Mississippi |
| 75 | Dalton Riley | 43 | Head | Disciples To Work | Mississippi |
| 76 | Eveline Riley | 41 | Wife | H Wife | Mississippi |
| 77 | Mildred Riley | 14 | Daughter | School | Mississippi |
| 78 | Jesse R. Little | 62 | Head | Farmer | Mississippi |
| 79 | Mary E. Little | 60 | Wife | House Wife | Alabama |
| 80 | Anna Mcduffie | 82 | Mother in law | None | Alabama |
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)