MK
Martha King — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-Davis-County, Louisiana
Our Model Tree links this Martha King across the 1930 and 1940 US Censuses in Jefferson-Davis-County, Louisiana (XGBoost, ~Confirmed) — first a spouse (b.~1893), then head of a 8-person household.
Age 47
b. ~1893
Female
Spouse
Born: Louisiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-Davis-County, Louisiana |
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Welch town |
| 1935 Residence (County) | Jefferson Davis |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 2 |
| 1935 Residence | Same Place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | Welch Town |
| Est. Birth Year | ~1893 |
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 Martha | Age | Birth yr |
|---|---|---|---|---|
| Russell King | Son | — | 20 | ~1920 |
| Martha King | Spouse | — | 47 | ~1893 |
| James King | Head | — | 41 | ~1899 |
| Wilma King | Daughter | — | 9 | ~1931 |
| Willie King | Daughter | — | 11 | ~1929 |
| James King | Son | — | 5 | ~1935 |
| Mary King | Daughter | — | 14 | ~1926 |
| Adam King | Son | — | 18 | ~1922 |
Census Appearances
1930
Jefferson Davis, …
Other, age 34
Jefferson Davis, Louisiana · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | Black |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Age at First Marriage | 16 |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Can Read/Write | No |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Jefferson-Davis-County, Louisiana
Spouse, age 47
Jefferson-Davis-County, Louisiana · implied b. ~1893 — 8 household members
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Welch town |
| 1935 Residence (County) | Jefferson Davis |
| Class of Worker | 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 Martha King across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Martha King
Spouse · 1940 · age 47 · b. ~1893 · 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 — Jefferson-Davis-County, Louisiana
Open full size
1940 US Federal Census — Jefferson-Davis-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01408-00527)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Thomas | 67 | Head | — | Louisiana |
| 2 | Willie Clark | 14 | Son | Yard Boy | Louisiana |
| 3 | Willie Jackson | 56 | Head | Labour | Louisiana |
| 4 | Alginia Jackson | 40 | Wife | — | Louisiana |
| 5 | Vincent Jackson | 5 | Son | — | Louisiana |
| 6 | Moses Jackson | 17 | Son | Labour | Louisiana |
| 7 | Mary Lou Jackson | 15 | daughter | Labour | Louisiana |
| 8 | Clarence Trimmer | 14 | Step son | — | Louisiana |
| 9 | Henry Trimmer | 12 | step son | — | Louisiana |
| 10 | Willie Trimmer | 8 | step son | — | Louisiana |
| 11 | Julius Daniel | 60 | Head | — | Louisiana |
| 12 | Lawrence Cretchen | 20 | lodger | Laborer | Louisiana |
| 13 | Asa Achille | 49 | Head | Labour | Louisiana |
| 14 | Lilly Achille | 29 | Wife | Servant | Louisiana |
| 15 | James King | 41 | Head | Labour | Louisiana |
| 16 | Martha King THIS PERSON | 47 | Wife | — | Louisiana |
| 17 | Russell King | 20 | Son | Labour | Louisiana |
| 18 | Adam King | 18 | Son | — | Louisiana |
| 19 | Mary King | 14 | daughter | — | Louisiana |
| 20 | Willie Mae King | 11 | daughter | — | Louisiana |
| 21 | Wilma King | 9 | daughter | — | Louisiana |
| 22 | James Jr King | 5 | son | — | Louisiana |
| 23 | Lena Simpson | 63 | Head | — | Louisiana |
| 24 | Billie Jean Simpson | 5 | Granddaughter | — | Louisiana |
| 25 | Laura R_ | 48 | Head | Cook & Laundress | Louisiana |
| 26 | Alex Figaro | 65 | Head | — | Louisiana |
| 27 | Ashard Lottie | 32 | Head | — | Louisiana |
| 28 | Julia Lottie | 21 | Wife | Labour | Louisiana |
| 29 | Roberta Lottie | 3 | daughter | — | Louisiana |
| 30 | Thomas Lottie | 1 | son | — | Louisiana |
| 31 | Abra Lottie | 0 | son | — | Louisiana |
| 32 | Arita Prudhomme | 51 | mother in law | — | Louisiana |
| 33 | Freddie Prudhomme | 23 | brother in law | Washerwoman | Louisiana |
| 34 | Henry Prudhomme | 17 | brother in law | Laborer | Louisiana |
| 35 | Harry Prudhomme | 16 | brother in law | Janitor | Louisiana |
| 36 | Elton Prudhomme | 14 | brother in law | Laborer | Louisiana |
| 37 | Abraham Prudhomme | 13 | brother in law | — | Louisiana |
| 38 | Joseph Prudhomme | 11 | brother in law | — | Louisiana |
| 39 | Sardi Mae Prudhomme | 6 | sister in law | — | Louisiana |
| 40 | Eli Jackson | 41 | Head | — | 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)