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Isaac Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this Isaac Williams across the 1920, 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed) — first a head (b.~1896), then head of a 7-person household.
Age 44
b. ~1896
Male
Head
Born: Florida
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Williams |
| Given Name | Isaac D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Class of Worker | 540 |
| Hours Worked | 36 |
| Highest Grade | Hs 6 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Township / Ward | Jacksonville |
| Est. Birth Year | ~1896 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Isaac Williams | Head | — | 44 | ~1896 |
| Le Williams | Son | — | 4 | ~1936 |
| Calvin Williams | Son | — | 18 | ~1922 |
| Joe Williams | Son | — | 13 | ~1927 |
| Herbert Williams | Son | — | 6 | ~1934 |
| Raymond Williams | Son | — | 9 | ~1931 |
| Fannie Williams | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Duval, Florida
Head, age 22
Duval, Florida · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Florida |
| Father's Birthplace | U. S. |
| Mother's Birthplace | U. S. |
| Occupation | Laborer |
| Industry | Tie Cutter |
| 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 33
Duval, Florida · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Isaac D |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 21 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Florida |
| Occupation | Truck Driver |
| Industry | City |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 21.00 |
| Radio Set | no |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Duval-County, Florida
Head, age 44
Duval-County, Florida · implied b. ~1896 — 7 household members
| Surname | Williams |
| Given Name | Isaac D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Class of Worker | 540 |
| Hours Worked | 36 |
| Highest Grade | Hs 6 |
| 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 Isaac Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Isaac Williams
Head · 1940 · age 44 · b. ~1896 · 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-t0627-00626-00744)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emma Broxton | 49 | Head | — | Florida |
| 42 | Royal Broxton | 27 | Son | Laborer | Florida |
| 43 | Grady Broxton | 26 | Son | — | Georgia |
| 44 | Charles Broxton | 15 | Son | — | Florida |
| 45 | Elsie Broxton | 13 | Daughter | — | Florida |
| 46 | Lu Chandler | 51 | Lodger | — | Georgia |
| 47 | Louis Coyner | 52 | Head | Bus Driver | Florida |
| 48 | Bertie Coyner | 42 | Wife | — | West Virginia |
| 49 | Dorothy Coyner | 12 | Daughter | — | Florida |
| 50 | George Vinson | 27 | Son-in-law | Laborer | Georgia |
| 51 | Annie May Vinson | 23 | Daughter | — | Florida |
| 52 | George, Jr. Vinson | 3 | Son | — | Florida |
| 53 | Lawrence Vinson | 0 | Son | — | Florida |
| 54 | Isaac D. Williams THIS PERSON | 44 | Head | — | Florida |
| 55 | Fannie Mae Williams | 39 | Wife | — | Georgia |
| 56 | Calvin Williams | 18 | Son | Laborer | Florida |
| 57 | Joe B. Williams | 13 | Son | — | Florida |
| 58 | Raymond O. Williams | 9 | Son | — | Florida |
| 59 | Herbert Williams | 6 | Son | — | Florida |
| 60 | Le Roy Williams | 4 | Son | — | Florida |
| 61 | Mary Jane Drew | 62 | Head | — | Georgia |
| 62 | Rufus Williams | 21 | Grandson | Truck Driver | Florida |
| 63 | Merle Williams | 18 | Granddaughter | — | Florida |
| 64 | Carl Lee James | 39 | Head | Automobile Mechanic | Georgia |
| 65 | Hazel Pierce James | 35 | Wife | — | Florida |
| 66 | Betty Joyce James | 11 | Daughter | — | Florida |
| 67 | Junior James | 9 | Son | — | Florida |
| 68 | Wilber James | 7 | Son | — | Florida |
| 69 | Jerry James | 2 | Son | — | Florida |
| 70 | Hubert Williams | 32 | Head | Attendant | Alabama |
| 71 | Esther Williams | 28 | Wife | — | Alabama |
| 72 | Leon Williams | 9 | Son | — | Alabama |
| 73 | Irma Ruth Williams | 6 | Daughter | — | Alabama |
| 74 | Olin Hickox | 32 | Head | Truck Driver | Georgia |
| 75 | Eva Hickox | 29 | Wife | — | Arkansas |
| 76 | Lonnie Hickox | 11 | Son | — | Georgia |
| 77 | Hazel Hickox | 10 | Daughter | — | Georgia |
| 78 | Doris Hickox | 8 | Daughter | — | Florida |
| 79 | Olin Jr. Hickox | 6 | Son | — | Florida |
| 80 | Mattie Carter | 37 | Head | Bunch Breaker | Georgia |
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)