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John Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Caldwell-County, Louisiana
Our Model Tree links this John Martin across the 1920, 1930 and 1940 US Censuses in Caldwell-County, Louisiana (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 10-person household.
Age 49
b. ~1891
Male
Head
Born: Louisiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Caldwell-County, Louisiana |
| Surname | Martin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 4 |
| 1935 Residence (County) | Caldwell |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Farmer |
| Township / Ward | Ward 4 |
| Est. Birth Year | ~1891 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Willie Martin | Daughter | — | 16 | ~1924 |
| Irene Martin | Daughter | — | 6 | ~1934 |
| Marian Martin | Daughter | — | 12 | ~1928 |
| Johnnie Martin | Daughter | — | 18 | ~1922 |
| Dorris Martin | Daughter | — | 9 | ~1931 |
| John Martin | Head | — | 49 | ~1891 |
| Sequoyah Martin | Son | — | 20 | ~1920 |
| John Martin | Son | — | 14 | ~1926 |
| Henry Martin | Son | — | 1 | ~1939 |
| Viola Martin | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Desoto, Louisiana
Head, age 28
Desoto, Louisiana · implied b. ~1892 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Caldwell, Louisiana
Head, age 39
Caldwell, Louisiana · implied b. ~1891 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Age at First Marriage | 25 |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | No |
| Home Owned/Rented | O |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Caldwell-County, Louisiana
Head, age 49
Caldwell-County, Louisiana · implied b. ~1891 — 10 household members
| Surname | Martin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 4 |
| 1935 Residence (County) | Caldwell |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Martin across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Martin
Head · 1940 · age 49 · b. ~1891 · Louisiana
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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 — Caldwell-County, Louisiana
Open full size
1940 US Federal Census — Caldwell-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01392-00158)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Earnest L Buckley | 27 | Son | Logger | Mississippi |
| 2 | Joe Oliver Buckley | 17 | Son | — | Louisiana |
| 3 | Verna M Buckley | 15 | Daughter | — | Louisiana |
| 4 | Joe Williams | 52 | Head | Laborer | Mississippi |
| 5 | Pearl Williams | 38 | Wife | — | Louisiana |
| 6 | Booker T Stewart | 27 | Head | Tie Maker | Arkansas |
| 7 | Jessie Stewart | 17 | Wife | — | Louisiana |
| 8 | R. O. Stamper | 25 | Head | Tie Maker | Louisiana |
| 9 | Willie Lee Stamper | 26 | Wife | — | Louisiana |
| 10 | R. O. Jr Stamper | 2 | Son | — | Louisiana |
| 11 | Alex Stamper | 20 | Head | Laborer | Louisiana |
| 12 | Alice Stamper | 15 | Wife | — | Louisiana |
| 13 | Etha D Stamper | 1 | Daughter | — | Louisiana |
| 14 | Ethel M Broadnax | 28 | Head | Servant | Louisiana |
| 15 | John Martin THIS PERSON | 49 | Head | Farmer | Louisiana |
| 16 | Viola Martin | 47 | Wife | — | Louisiana |
| 17 | Sequoyah Martin | 20 | Son | Laborer | Louisiana |
| 18 | Johnnie Mae Martin | 18 | Daughter | Servant | Louisiana |
| 19 | Willie Mae Martin | 16 | Daughter | — | Louisiana |
| 20 | John F Martin | 14 | Son | — | Louisiana |
| 21 | Marian Martin | 12 | Daughter | — | Louisiana |
| 22 | Dorris Martin | 9 | Daughter | — | Louisiana |
| 23 | Irene Martin | 6 | Daughter | — | Louisiana |
| 24 | Henry M Martin | 1 | Son | — | Louisiana |
| 25 | Mandy Johnson | 74 | Head | — | Louisiana |
| 26 | Carlo Simmons | 44 | Head | Farmer | Louisiana |
| 27 | Ann M Simmons | 36 | Wife | — | Louisiana |
| 28 | Willie Simmons | 15 | Daughter | — | Louisiana |
| 29 | Fred Simmons | 14 | Son | — | Louisiana |
| 30 | Rosco Simmons | 13 | Son | — | Louisiana |
| 31 | John Collins | 39 | Head | Laborer | Louisiana |
| 32 | Susie M Collins | 38 | Wife | — | Louisiana |
| 33 | Stewart Collins | 16 | Son | — | Louisiana |
| 34 | Earl D Collins | 9 | Son | — | Louisiana |
| 35 | Johnie Lee Collins | 8 | Daughter | — | Louisiana |
| 36 | Leo H Collins | 7 | Son | — | Louisiana |
| 37 | Aritha Collins | 5 | Daughter | — | Louisiana |
| 38 | Eli Simmons | 51 | Head | Farmer | Louisiana |
| 39 | Lucille Simmons | 36 | Wife | — | Louisiana |
| 40 | Ruth Simmons | 18 | Daughter | — | Louisiana |
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)