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John Simpson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this John Simpson across the 1920, 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 4-person household.
Age 50
b. ~1890
Male
Head
Born: Florida
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Simpson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | 4v Precinct |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Occupation | Bridge foreman |
| Industry | R.R. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 3164 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Bridge Foreman |
| Township / Ward | 4V Precinct |
| Est. Birth Year | ~1890 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Joyce Miller | Daughter | — | 10 | ~1930 |
| John Simpson | Head | — | 50 | ~1890 |
| Andrew Miller | Son | — | 8 | ~1932 |
| Bernice Simpson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Duval, Florida
Head, age 28
Duval, Florida · implied b. ~1892 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Carpenter |
| Industry | House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Duval, Florida
Head, age 40
Duval, Florida · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 22 |
| Father's Birthplace | Florida |
| Mother's Birthplace | Georgia |
| Occupation | Foreman |
| Industry | Bridge Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | $25.00 |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Duval-County, Florida
Head, age 50
Duval-County, Florida · implied b. ~1890 — 4 household members
| Surname | Simpson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | 4v Precinct |
| 1935 Residence (County) | Duval |
| Occupation | Bridge foreman |
| Industry | R.R. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 3164 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 Simpson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Simpson
Head · 1940 · age 50 · b. ~1890 · Florida
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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 — Duval-County, Florida
Open full size
1940 US Federal Census — Duval-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00584-01033)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | B. Stevens | 14 | Son | — | Florida |
| 2 | Mary Stevens | 13 | Daughter | — | Florida |
| 3 | Joseph Stevens | 12 | Son | — | Florida |
| 4 | John Stevens | 3 | Son | — | Florida |
| 5 | Charles Thomas | 51 | Head | Operator | Georgia |
| 6 | Eliza Thomas | 48 | Wife | — | Alabama |
| 7 | Isaac Mayhew | 40 | Head | Laborer | Florida |
| 8 | Lessie Mayhew | 38 | Wife | — | Florida |
| 9 | Mary Ellen Mayhew | 17 | Daughter | — | Florida |
| 10 | Isaac Jr. Mayhew | 15 | Son | — | Florida |
| 11 | Willie Worn | 79 | Uncle | — | Florida |
| 12 | Fisher Crumley | 5 | — | — | Florida |
| 13 | Sidney Gates | 46 | Head | Laborer | Florida |
| 14 | Lessie Gates | 40 | Wife | — | Florida |
| 15 | Queenie Gates | 20 | Daughter | Laundress | Florida |
| 16 | Sidney Jr. Gates | 19 | Son | Laborer | Florida |
| 17 | Nathaniel Gates | 16 | Son | — | Florida |
| 18 | Ellen Griffin | 26 | Daughter | Laundress | Florida |
| 19 | Esther Stephens | 25 | Daughter | Laundress | Florida |
| 20 | Ella Spencer | 52 | Mother-in-law | Laundress | Florida |
| 21 | Alma Griffin | 10 | Granddaughter | — | Florida |
| 22 | Alice Stephens | 8 | Granddaughter | — | Florida |
| 23 | Harvey Howard | 35 | Head | Laborer | Georgia |
| 24 | Myrtle Howard | 32 | Wife | — | Georgia |
| 25 | King Wainwright | 46 | Head | Car Inspector | Georgia |
| 26 | Naomi Wainwright | 27 | Wife | — | Georgia |
| 27 | Juanita Wainwright | 14 | Daughter | — | Florida |
| 28 | Eleanor Wainwright | 12 | Daughter | — | Florida |
| 29 | Jackie Wainwright | 9 | Daughter | — | Florida |
| 30 | Marvin Wainwright | 4 | Son | — | Florida |
| 31 | John Simpson THIS PERSON | 50 | Head | Bridge Foreman | Florida |
| 32 | Bernice Simpson | 45 | Wife | — | Florida |
| 33 | Joyce Miller | 10 | Daughter | — | Florida |
| 34 | Andrew Miller | 8 | Son | — | Florida |
| 35 | Henry Keadon | 49 | Head | Laborer | Florida |
| 36 | Elizabeth Keadon | 40 | Wife | — | Florida |
| 37 | Rosetta Keadon | 18 | Daughter | — | Florida |
| 38 | Mary Keadon | 17 | Daughter | — | Florida |
| 39 | Henry Jr. Keadon | 21 | Son | Laborer | Florida |
| 40 | Walker Keadon | 19 | Son | Laborer | Florida |
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)