IT
Isaac Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grant-County, Louisiana
Our Model Tree links this Isaac Thompson across the 1930 and 1940 US Censuses in Grant-County, Louisiana (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 6-person household.
Age 57
b. ~1883
Male
Head
Born: Louisiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grant-County, Louisiana |
| Surname | Thompson |
| Given Name | Isaac E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 4 |
| 1935 Residence (County) | Grant Parish |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Farmer |
| Township / Ward | Ward 4 |
| Est. Birth Year | ~1883 |
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 Isaac | Age | Birth yr |
|---|---|---|---|---|
| Clarence Thompson | Son | — | 18 | ~1922 |
| Isaac Thompson | Head | — | 57 | ~1883 |
| Lonnie Thompson | Son | — | 15 | ~1925 |
| Hershel Thompson | Son | — | 13 | ~1927 |
| Mollie Thompson | Spouse | — | 55 | ~1885 |
| Annie Thompson | Daughter | — | 22 | ~1918 |
Census Appearances
1930
Grant, Louisiana
Head, age 47
Grant, Louisiana · implied b. ~1883 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Age at First Marriage | 22 |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Grant-County, Louisiana
Head, age 57
Grant-County, Louisiana · implied b. ~1883 — 6 household members
| Surname | Thompson |
| Given Name | Isaac E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 4 |
| 1935 Residence (County) | Grant Parish |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 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 Isaac Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Isaac Thompson
Head · 1940 · age 57 · b. ~1883 · 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 — Grant-County, Louisiana
Open full size
1940 US Federal Census — Grant-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01402-00067)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Roosevelt Wallace | 15 | Brother | Student At Home | Louisiana |
| 2 | Cecil Smith | 30 | Head | Farmer | Louisiana |
| 3 | Rachel Smith | 26 | Wife | Housewife At Home | Louisiana |
| 4 | Charles Hanan | 32 | Head | Farmer | Louisiana |
| 5 | Beatrice Hanan | 24 | Wife | Housewife At Home | Louisiana |
| 6 | Lila Smith | 45 | Head | Farmer | Louisiana |
| 7 | Cherry Johnson | 20 | Daughter | Housekeeper At Home | Louisiana |
| 8 | Cornelius Aron | 17 | Son | Student At School | Louisiana |
| 9 | Leon Jr. Nelson | 1 | Grandson | — | Louisiana |
| 10 | Henry Gordon | 25 | Head | Laborer | Louisiana |
| 11 | Beatrice Gordon | 14 | Wife | Housewife At Home | Louisiana |
| 12 | Isaac E. Thompson THIS PERSON | 57 | Head | Farmer | Louisiana |
| 13 | Mollie Thompson | 55 | Wife | Housewife At Home | Louisiana |
| 14 | Annie Thompson | 22 | Daughter | Teacher | Louisiana |
| 15 | Clarence Thompson | 18 | Son | Farm Hand At Home | Louisiana |
| 16 | Lonnie Thompson | 15 | Son | Student At School | Louisiana |
| 17 | Hershel Thompson | 13 | Son | — | Louisiana |
| 18 | Thomas J. Smith | 51 | Head | Farmer | Louisiana |
| 19 | Alice Smith | 50 | Wife | Housewife At Home | Louisiana |
| 20 | Bessie Mae Smith | 22 | Daughter | Librarian | Louisiana |
| 21 | Carl E. Smith | 17 | Son | Student At School | Louisiana |
| 22 | Thomas J. Jr. Smith | 14 | Son | Student At School | Louisiana |
| 23 | J. W. Smith | 12 | Son | — | Louisiana |
| 24 | William H. Griffin | 44 | Head | Farmer | Louisiana |
| 25 | Dora Griffin | 48 | Wife | Housewife At Home | Louisiana |
| 26 | William H. Griffin | 20 | Son | Farm Hand At Home | Louisiana |
| 27 | James E. Griffin | 16 | Son | Student At School | Louisiana |
| 28 | Billie Jean Griffin | 11 | Daughter | — | Louisiana |
| 29 | Viola A. Griffin | 5 | Daughter | — | Louisiana |
| 30 | Eldred E. Griffin | 2 | Son | — | Louisiana |
| 31 | Stafford Hart | 50 | Head | Farmer | Louisiana |
| 32 | Anna Mae Hart | 55 | Wife | Housewife At Home | Louisiana |
| 33 | Justina Hart | 20 | Daughter | Housekeeper At Home | Louisiana |
| 34 | Noraine Frazier | 15 | Granddaughter | Student At School | Louisiana |
| 35 | Seager Ellen | 2 | Grandson | — | Louisiana |
| 36 | Lawrence L. Lecour | 39 | Head | Storekeeper | Louisiana |
| 37 | Christine Lecour | 26 | Wife | Housewife At Home | Louisiana |
| 38 | Lurline Ann Lecour | 6 | Daughter | — | Louisiana |
| 39 | Sandy Joe Lecour | 2 | Daughter | — | Louisiana |
| 40 | Earlene Conner | 15 | Sister-in-law | Student At School | 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)