IT
Isaac Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mcdowell-County, West Virginia
Our Model Tree links this Isaac Thompson across the 1920, 1930 and 1940 US Censuses in Mcdowell-County, West Virginia (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Male
Head
Born: Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mcdowell-County, West Virginia |
| Surname | Thompson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Sharpe |
| Additional Details | |
| Occupation | Coal Mine |
| Industry | PW |
| Class of Worker | 454 |
| Highest Grade | No 4 |
| 1935 Residence | 7 |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Coal Mine |
| Township / Ward | Sharpe |
| Est. Birth Year | ~1895 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| John Thompson | Son | — | 19 | ~1921 |
| Frances Thompson | Daughter | — | 20 | ~1920 |
| Anna Thompson | Spouse | — | 37 | ~1903 |
| Isaac Thompson | Head | — | 45 | ~1895 |
Census Appearances
1920
Mcdowell, West …
Other, age 29
Mcdowell, West Virginia · implied b. ~1891 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Isaac |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Laborer |
| Industry | Coke Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Mcdowell, West …
Head, age 37
Mcdowell, West Virginia · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 25 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Coal loader |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | Un |
| Veteran | No |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Mcdowell-County, West …
Head, age 45
Mcdowell-County, West Virginia · implied b. ~1895 — 4 household members
| Surname | Thompson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Sharpe |
| Occupation | Coal Mine |
| Industry | PW |
| Class of Worker | 454 |
| Highest Grade | No 4 |
| 1935 Residence | 7 |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Isaac Thompson
Head · 1940 · age 45 · b. ~1895 · West Virginia
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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 — Mcdowell-County, West Virginia
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1940 US Federal Census — Mcdowell-County, West Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04421-00255)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Hill | 4 | Daughter | — | West Virginia |
| 2 | Eddie Hill | 1 | Son | — | West Virginia |
| 3 | Lincoln Horton | 41 | Head | Laborer | North Carolina |
| 4 | Myrtle Horton | 34 | Wife | — | North Carolina |
| 5 | Lincoln Horton | 17 | Son | — | North Carolina |
| 6 | James Horton | 15 | Son | — | North Carolina |
| 7 | George Ray | 32 | Lodger | Miner | North Carolina |
| 8 | Jacob Ray | 10 | Daughter | — | West Virginia |
| 9 | Thomas Ray | 9 | Lodger | — | West Virginia |
| 10 | Rose Ray | 7 | Daughter | — | West Virginia |
| 11 | Rudolph Ray | 5 | Lodger | — | West Virginia |
| 12 | Maxy Ray | 3 | Daughter | — | West Virginia |
| 13 | Thurman Harris | 31 | Head | Coal Mine | Virginia |
| 14 | Barbara Harris | 37 | Wife | — | West Virginia |
| 15 | James Harris | 18 | Son | — | Virginia |
| 16 | William Harris | 14 | Son | — | Virginia |
| 17 | Calvin Harris | 13 | Son | — | Virginia |
| 18 | Alex Sr Popp | 55 | Head | Coal Mine | Hungary |
| 19 | Mary Popp | 48 | Wife | — | Hungary |
| 20 | Joe Popp | 21 | Son | Coal Mine | West Virginia |
| 21 | Steve Gergely | 48 | Head | Coal Mine | Hungary |
| 22 | Anna Gergely | 48 | Wife | — | Hungary |
| 23 | Frank Gergely | 22 | Son | Coal Mine | West Virginia |
| 24 | Julius Gergely | 16 | Son | — | West Virginia |
| 25 | Anna Gergely | 14 | Daughter | — | West Virginia |
| 26 | Billy Gergely | 11 | Son | — | West Virginia |
| 27 | Mike Greech | 47 | Head | Coal Mine | Poland |
| 28 | Mary A Greech | 36 | Wife | — | Hungary |
| 29 | Mary Greech | 18 | Daughter | — | West Virginia |
| 30 | Helen Greech | 17 | Daughter | — | West Virginia |
| 31 | Margaret Greech | 15 | Daughter | — | West Virginia |
| 32 | Irene Greech | 13 | Daughter | — | West Virginia |
| 33 | Louis Lamen | 56 | Head | Coal Mine | Hungary |
| 34 | Mary Lamen | 50 | Wife | — | Hungary |
| 35 | John Perry | 60 | Head | Coal Mine | Virginia |
| 36 | Georgia Perry | 46 | Wife | — | Virginia |
| 37 | Isaac Thompson THIS PERSON | 45 | Head | Coal Mine | Virginia |
| 38 | Anna Mae Thompson | 37 | Wife | — | Virginia |
| 39 | Frances Thompson | 20 | Daughter | — | West Virginia |
| 40 | John Thompson | 19 | Son | — | West Virginia |
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)