JL
John Logan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Knox-County, Kentucky
Our Model Tree links this John Logan across the 1920, 1930 and 1940 US Censuses in Knox-County, Kentucky (XGBoost, ~Confirmed) — first a head (b.~1898), then head of a 5-person household.
Age 42
b. ~1898
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Kentucky |
| Surname | Logan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag Dist #4 |
| 1935 Residence (County) | KNOX |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Mag Dist 4 |
| Est. Birth Year | ~1898 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Logan | Head | — | 42 | ~1898 |
| Joeann Cooper | Other | — | 5 | ~1935 |
| Joe Logan | Son | — | 15 | ~1925 |
| Dallas Logan | Son | — | 18 | ~1922 |
| Emma Logan | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Knox, Kentucky
Head, age 22
Knox, Kentucky · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Logan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Knox, Kentucky
Head, age 32
Knox, Kentucky · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Logan |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 23 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | farmer |
| Industry | general farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Knox-County, Kentucky
Head, age 42
Knox-County, Kentucky · implied b. ~1898 — 5 household members
| Surname | Logan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag Dist #4 |
| 1935 Residence (County) | KNOX |
| Hours Worked | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Logan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Logan
Head · 1940 · age 42 · b. ~1898 · Kentucky
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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 — Knox-County, Kentucky
Open full size
1940 US Federal Census — Knox-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01326-01278)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Venie Helton | 10 | Daughter | — | Kentucky |
| 42 | Paul Helton | 9 | Son | — | Kentucky |
| 43 | Elbert Helton | 5 | Son | — | Kentucky |
| 44 | Valine Helton | 3 | Daughter | — | Kentucky |
| 45 | Amanda Walters | 63 | Mother in law | — | Kentucky |
| 46 | Eunice Walters | 29 | Sister in law | — | Kentucky |
| 47 | Joseph L. Helton | 71 | Head | — | Kentucky |
| 48 | Elizord Helton | 38 | Head | Miner | Kentucky |
| 49 | Francis Helton | 35 | Wife | — | Kentucky |
| 50 | Charles Helton | 8 | Son | — | Kentucky |
| 51 | Norma J. Helton | 5 | Daughter | — | Kentucky |
| 52 | Speed Miller | 70 | Head | — | Kentucky |
| 53 | Mary Miller | 65 | Wife | — | Kentucky |
| 54 | Sarah Miller | 34 | Daughter | — | Kentucky |
| 55 | Arlis Miller | 4 | Grandson | — | Kentucky |
| 56 | Silva G. Miller | 12 | Granddaughter | — | Kentucky |
| 57 | John Logan THIS PERSON | 42 | Head | — | Kentucky |
| 58 | Emma Logan | 44 | Wife | — | Kentucky |
| 59 | Dallas B. Logan | 18 | Son | — | Kentucky |
| 60 | Joe S. Logan | 15 | Son | — | Kentucky |
| 61 | Joeann Cooper | 5 | Niece | — | Kentucky |
| 62 | Alex C. Mackey | 40 | Head | Farmer | Kentucky |
| 63 | Carrie Mackey | 36 | Wife | — | Kentucky |
| 64 | William B. Mackey | 13 | Son | — | Kentucky |
| 65 | Oscar C. Mackey | 10 | Son | — | Kentucky |
| 66 | William P. Engle | 64 | Head | Farmer | Kentucky |
| 67 | Rosa Engle | 64 | Wife | — | Kentucky |
| 68 | Salmon Wells | 68 | Head | Farmer | Kentucky |
| 69 | Laura Wells | 63 | Wife | — | Kentucky |
| 70 | Virgie Wells | 37 | Son | — | Kentucky |
| 71 | Neilus Wells | 34 | Son | — | Kentucky |
| 72 | Finley Wells | 52 | Head | Farmer | Kentucky |
| 73 | Linda Wells | 41 | Wife | — | Kentucky |
| 74 | Elsie Wells | 12 | Daughter | — | Kentucky |
| 75 | Talma Wells | 9 | Daughter | — | Kentucky |
| 76 | Zelma Wells | 5 | Daughter | — | Kentucky |
| 77 | James C. Wells | 3 | Son | — | Kentucky |
| 78 | Andrew Wells | 71 | Head | Farmer | Kentucky |
| 79 | Sarah E. Wells | 66 | Wife | — | Kentucky |
| 80 | James Manning | 56 | Head | Farmer | Kentucky |
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)