JL
John Leonard — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jackson-County, Oklahoma
Our Model Tree links this John Leonard across the 1920, 1930 and 1940 US Censuses in Jackson-County, Oklahoma (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 3-person household.
Age 67
b. ~1873
Male
Head
Born: Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Oklahoma |
| Surname | Leonard |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Duke Township |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Farmer |
| Township / Ward | Duke Township |
| Est. Birth Year | ~1873 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Leonard | Head | — | 67 | ~1873 |
| Archie Leonard | Son | — | 18 | ~1922 |
| Nannie Leonard | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Jackson, Oklahoma
Head, age 46
Jackson, Oklahoma · implied b. ~1874 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Jackson, Oklahoma
Head, age 57
Jackson, Oklahoma · implied b. ~1873 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | J. H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 28 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Jackson-County, Oklahoma
Head, age 67
Jackson-County, Oklahoma · implied b. ~1873 — 3 household members
| Surname | Leonard |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Duke Township |
| 1935 Residence (County) | Jackson |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 John Leonard 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 Leonard
Head · 1940 · age 67 · b. ~1873 · Oklahoma
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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 — Jackson-County, Oklahoma
Open full size
1940 US Federal Census — Jackson-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03299-00349)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John H. Leonard THIS PERSON | 67 | Head | Farmer | Virginia |
| 2 | Nannie B. Leonard | 59 | Wife | — | Virginia |
| 3 | Archie D. Leonard | 18 | Son | — | Okla |
| 4 | Jim V. Young | 52 | Head | Laborer | Tennessee |
| 5 | Della Young | 51 | Wife | — | Tennessee |
| 6 | Jack E. Young | 24 | Son | Laborer | Tennessee |
| 7 | Lewis E. Young | 18 | Son | Laborer | Tennessee |
| 8 | Jarvis E. Young | 16 | Son | Laborer | Tennessee |
| 9 | Jimmie L. Young | 14 | Son | — | Okla |
| 10 | Charlie R. Young | 12 | Son | — | Okla |
| 11 | Bert Tatum | 39 | Head | Farmer | Okla |
| 12 | Johnie H. Tatum | 33 | Wife | — | Okla |
| 13 | B. Geraldine Tatum | 14 | Daughter | — | Okla |
| 14 | Bradford L. Tatum | 11 | Son | — | Okla |
| 15 | Etha A. Tatum | 9 | Daughter | — | Okla |
| 16 | Johnie B. Tatum | 6 | Son | — | Okla |
| 17 | Elmer C. Tatum | 21 | Nephew | Laborer | Okla |
| 18 | Henry E. Mcclure | 61 | Head | Farmer | Tennessee |
| 19 | Willie P. Mcclure | 60 | Wife | — | Texas |
| 20 | W. Elwood Mcclure | 23 | Son | Farmer | Okla |
| 21 | James D. Menson | 15 | Grandson | — | Okla |
| 22 | Callie Johnson | 52 | Head | Farmer | Okla |
| 23 | Callie Johnson | 49 | Wife | — | Okla |
| 24 | Richard E. Harper | 35 | Head | Farmer | Alabama |
| 25 | Blanche M. Harper | 57 | Mother | — | Alabama |
| 26 | Elgay E. Harper | 31 | Brother | Laborer | Okla |
| 27 | J. Wilbur Leonard | 25 | Head | Owner | Washington |
| 28 | Fayrene Leonard | 21 | Wife | — | Okla |
| 29 | John R. Leonard | 5 | Son | — | Okla |
| 30 | James A. Leonard | 1 | Son | — | Okla |
| 31 | Hubert G. Blasingame | 40 | Head | Farmer | Okla |
| 32 | Margaret E. Blasingame | 25 | Wife | — | Okla |
| 33 | Elmer E. Nelson | 49 | Head | Farmer | Texas |
| 34 | Rifa S. Nelson | 47 | Wife | — | Texas |
| 35 | Leon A. Nelson | 23 | Son | Log Construction | Okla |
| 36 | Billie P. Nelson | 12 | Son | — | Okla |
| 37 | Bethene Nelson | 6 | Daughter | — | Okla |
| 38 | B. Lovelle Nelson | 36 | Head | Farmer | Okla |
| 39 | Susie M. Nelson | 36 | Wife | — | Texas |
| 40 | B. Lavelle Jr. Nelson | 14 | Son | — | Okla |
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)