JD
John Dempsey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mingo-County, West Virginia
Our Model Tree links this John Dempsey across the 1930 and 1940 US Censuses in Mingo-County, West Virginia (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 8-person household.
Age 63
b. ~1877
Male
Head
Born: West Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mingo-County, West Virginia |
| Surname | Dempsey |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | West Virginia |
| 1935 Residence (City) | Hardee District |
| 1935 Residence (County) | Mingo |
| Additional Details | |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 325 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
| Occupation | Miner |
| Township / Ward | Hardee District |
| Est. Birth Year | ~1877 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Rush Dempsey | Son | — | 16 | ~1924 |
| Hi Dempsey | Son | — | 20 | ~1920 |
| Wavel Dempsey | Daughter | — | 6 | ~1934 |
| Vila Dempsey | Spouse | — | 52 | ~1888 |
| Fred Dempsey | Son | — | 15 | ~1925 |
| Ernest Dempsey | Son | — | 12 | ~1928 |
| John Dempsey | Son | — | 8 | ~1932 |
| John Dempsey | Head | — | 63 | ~1877 |
Census Appearances
1930
Mingo, West …
Head, age 51
Mingo, West Virginia · implied b. ~1879 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | John B |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | West Virginia |
| Age at First Marriage | 25 |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | West Virginia |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west virginia |
1940
Mingo-County, West …
Head, age 63
Mingo-County, West Virginia · implied b. ~1877 — 8 household members
| Surname | Dempsey |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | West Virginia |
| 1935 Residence (City) | Hardee District |
| 1935 Residence (County) | Mingo |
| Occupation | Miner |
| Industry | Coal Mine |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 325 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | West Virginia |
| Birth Country | United States |
| Birthplace (normalized) | west 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 John Dempsey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Dempsey
Head · 1940 · age 63 · b. ~1877 · 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 — Mingo-County, West Virginia
Open full size
1940 US Federal Census — Mingo-County, West Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04431-00076)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cleo Maynard | 12 | — | — | West Virginia |
| 42 | Oscar Maynard | 10 | Son | — | West Virginia |
| 43 | Harold Maynard | 6 | Son | — | West Virginia |
| 44 | Furlon Adkins | 38 | Head | Operator | West Virginia |
| 45 | Wallace Horn | 62 | Head | Laborer | West Virginia |
| 46 | Arminda Horn | 48 | Wife | — | West Virginia |
| 47 | Harve Horn | 27 | Son | Laborer | Virginia |
| 48 | Pearl Horn | 20 | Daughter | — | Virginia |
| 49 | Wallace Jr. Horn | 17 | Son | New Worker | Virginia |
| 50 | Beulah Horn | 16 | Daughter | — | Virginia |
| 51 | Geraldine Horn | 13 | Daughter | — | West Virginia |
| 52 | Trudeline Horn | 10 | Daughter | — | West Virginia |
| 53 | Elliott Horn | 6 | Son | — | West Virginia |
| 54 | Bobby L. Horn | 3 | Son | — | West Virginia |
| 55 | Julius Yosttefford | 56 | Head | Loader | Kentucky |
| 56 | Viola Yosttefford | 43 | Wife | — | West Virginia |
| 57 | Mike Yosttefford | 28 | Son | Laborer | West Virginia |
| 58 | Elmer Yosttefford | 23 | Son | Laborer | West Virginia |
| 59 | Inies Yosttefford | 21 | Daughter | — | West Virginia |
| 60 | Baack Yosttefford | 16 | Son | Laborer | West Virginia |
| 61 | Will Yosttefford | 13 | Son | — | West Virginia |
| 62 | Lena Yosttefford | 13 | Daughter | — | West Virginia |
| 63 | May Yosttefford | 10 | Daughter | — | West Virginia |
| 64 | Marie Yosttefford | 8 | Daughter | — | West Virginia |
| 65 | Harlan Yosttefford | 6 | Son | — | West Virginia |
| 66 | Traden Yosttefford | 4 | Son | — | West Virginia |
| 67 | Julius Jr. Yosttefford | 2 | Son | — | West Virginia |
| 68 | John B. Dempsey THIS PERSON | 63 | Head | Miner | West Virginia |
| 69 | Vila Dempsey | 52 | Wife | — | West Virginia |
| 70 | Hi Dempsey | 20 | Son | New Worker | West Virginia |
| 71 | Rush Dempsey | 16 | Son | New Worker | West Virginia |
| 72 | Fred Dempsey | 15 | Son | — | West Virginia |
| 73 | Ernest Dempsey | 12 | Son | — | West Virginia |
| 74 | John B. Jr. Dempsey | 8 | Son | — | West Virginia |
| 75 | Wavel Dempsey | 6 | Daughter | — | West Virginia |
| 76 | Silas Yodaten | 33 | Head | Miner | West Virginia |
| 77 | Allie Yodaten | 29 | Wife | — | West Virginia |
| 78 | Novellia Yodaten | 10 | Daughter | — | West Virginia |
| 79 | Irene Yodaten | 9 | Daughter | — | West Virginia |
| 80 | Nicholas Yodaten | 8 | 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)