JH
John Hart — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hillsborough-County, Florida
Our Model Tree links this John Hart across the 1920, 1930 and 1940 US Censuses in Hillsborough-County, Florida (XGBoost, ~Confirmed), with identified parents Wallie & Walter — first a head (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Head
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hillsborough-County, Florida |
| Surname | Hart |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Gibsonton |
| 1935 Residence (County) | Hillsboro |
| Additional Details | |
| Occupation | Granulator Operator |
| Industry | Chemical Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Granulator Operator |
| Township / Ward | Gibsonton |
| Est. Birth Year | ~1911 |
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 Hart | Head | — | 29 | ~1911 |
| John Hart | Son | — | ~1940 | |
| Carolyn Hart | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Hillsborough, Florida
Son, age 8
Hillsborough, Florida · implied b. ~1912 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Connecticut |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
Hillsborough, Florida
Son, age 18
Hillsborough, Florida · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Connecticut |
| Occupation | Running maker |
| Industry | Helper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
Hillsborough-County, Florida
Head, age 29
Hillsborough-County, Florida · implied b. ~1911 — 3 household members
| Surname | Hart |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Gibsonton |
| 1935 Residence (County) | Hillsboro |
| Occupation | Granulator Operator |
| Industry | Chemical Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Wallie Hart (~0.92 confidence) and father Walter Hart (~0.92 confidence) and mother Lillie Hart (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Wallie Hart
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Walter Hart
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Lillie Hart
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Hart
Head · 1940 · age 29 · b. ~1911 · Florida
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Hillsborough-County, Florida
Open full size
1940 US Federal Census — Hillsborough-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00591-00686)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Mccullah | 44 | Head | Carpenter | Illinois |
| 2 | Nori D Mccullah | 48 | Wife | — | Louisiana |
| 3 | Margaret Mccullah | 19 | Daughter | — | Colorado |
| 4 | Everitt Winslow | 49 | Head | Animal Trainer | Kentucky |
| 5 | Helen D Winslow | 45 | Wife | Animal Trainer | Maryland |
| 6 | Charles Belcher | 66 | Head | — | New Jersey |
| 7 | Lonie D Belcher | 61 | Wife | — | Ohio |
| 8 | Marvin Furginer | 40 | Head | Manager | Florida |
| 9 | Luella Furginer | 30 | Wife | — | Florida |
| 10 | Richard Furginer | 11 | Son | — | Florida |
| 11 | William T Frier | 44 | Head | Mill Operator | Florida |
| 12 | Lara D Frier | 39 | Wife | — | Georgia |
| 13 | James Frier | 16 | Son | — | Florida |
| 14 | Mary Frier | 12 | Daughter | — | Florida |
| 15 | Wally Mcdaniel | 14 | Brother in law | — | Florida |
| 16 | Edward Frater | 32 | Head | Agent Operator | Alabama |
| 17 | Evelyn Frater | 26 | Wife | — | Georgia |
| 18 | Robert Frater | 5 | Son | — | Florida |
| 19 | Bonnie Frater | 0 | Son | — | Florida |
| 20 | John H Hart THIS PERSON | 29 | Head | Granulator Operator | Delaware |
| 21 | Carolyn D Hart | 26 | Wife | — | Florida |
| 22 | John L Hart | 0 | Son | — | Florida |
| 23 | Henry C Feagle | 36 | Head | Super Operator | Florida |
| 24 | Helen Feagle | 27 | Wife | — | Florida |
| 25 | Mary Helen Feagle | 11 | Daughter | — | Florida |
| 26 | William Marvin Feagle | 5 | Son | — | Florida |
| 27 | John H Stripling | 39 | Head | Brick Mason | Georgia |
| 28 | Bessie Mae Stripling | 29 | Wife | — | Louisiana |
| 29 | William E Stripling | 10 | Son | — | Florida |
| 30 | Eugene M Stripling | 6 | Son | — | Florida |
| 31 | Mary Ann Stripling | 1 | Daughter | — | Florida |
| 32 | John D Palmer | 34 | Head | Plant Manager | Florida |
| 33 | Caroline Palmer | 31 | Wife | — | Connecticut |
| 34 | John H Palmer | 11 | Son | — | Florida |
| 35 | Daniel J Palmer | 3 | Son | — | Florida |
| 36 | Albert Ball | 27 | Head | Electrician | Pennsylvania |
| 37 | Julia C Ball | 28 | Wife | — | Pennsylvania |
| 38 | Edith Mae Ball | 7 | Daughter | — | Pennsylvania |
| 39 | Sue R Snyder | 65 | Head | — | Ohio |
| 40 | Osburn Frank | 70 | Boarder | — | Ohio |
Pedigree Summary
John
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)