JW
Jack Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Florida
Our Model Tree links this Jack Williams across the 1930 and 1940 US Censuses in Madison-County, Florida (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Florida
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Florida |
| Surname | Williams |
| Given Name | Jack R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Lee Town |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Township / Ward | Lee Town |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Pauline Williams | Daughter | — | 13 | ~1927 |
| Katie Williams | Daughter | — | 15 | ~1925 |
| Willie Williams | Daughter | — | 54 | ~1886 |
| Claude Williams | Daughter | — | 10 | ~1930 |
| John Williams | Head | — | 40 | ~1900 |
| John Williams | Son | — | 17 | ~1923 |
| Jack Williams | Son | — | 11 | ~1929 |
| Ruby Williams | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Madison, Florida
Son, age
Madison, Florida · implied b. ~1930 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Jack R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Madison-County, Florida
Son, age 11
Madison-County, Florida · implied b. ~1929 — 8 household members
| Surname | Williams |
| Given Name | Jack R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Lee Town |
| 1935 Residence (County) | Madison |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| 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 Jack Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Williams
Son · 1940 · age 11 · b. ~1929 · Florida
★ You are viewing this record
Sibling
Katie Williams
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Williams
Sibling · 1940 · age 54
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Williams
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Williams
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claude Williams
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Madison-County, Florida
Open full size
1940 US Federal Census — Madison-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00598-00696)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clenny Mayes | 17 | Head | Laborer | Florida |
| 42 | Eula C. Mayes | 18 | Wife | — | Florida |
| 43 | Rufus Handill | 31 | Head | Laborer | Florida |
| 44 | Lilla Handill | 26 | Wife | — | Florida |
| 45 | Joseph C. Black | 35 | Head | Ginner | Florida |
| 46 | Martha E. Black | 45 | Wife | — | Florida |
| 47 | William B. Black | 19 | Son | — | Florida |
| 48 | Doris G. Black | 17 | Daughter | — | Florida |
| 49 | Robbie L. Black | 15 | Daughter | — | Florida |
| 50 | George L. Brown | 65 | Head | Mechanic | Florida |
| 51 | Mary M. Brown | 62 | Wife | — | Georgia |
| 52 | H. D. Brown | 30 | Head | Mechanic | Florida |
| 53 | Bernice Brown | 24 | Wife | — | Florida |
| 54 | John H. Sealey | 21 | Head | Shovel Hand | Florida |
| 55 | Alva S. Sealey | 18 | Wife | — | Florida |
| 56 | Lynne Sealey | 8 | Nephew | — | Florida |
| 57 | James J. Register | 36 | Head | Carpenter | Florida |
| 58 | Sherrie Register | 36 | Wife | — | Florida |
| 59 | Audrey Register | 13 | Daughter | — | Florida |
| 60 | Agnes Register | 12 | Daughter | — | Florida |
| 61 | John H. Williams | 40 | Head | Dog Trainer | Florida |
| 62 | Ruby K. Williams | 42 | Wife | — | Florida |
| 63 | John H. Jr. Williams | 17 | Son | Laborer | Florida |
| 64 | Katie P. Williams | 15 | Daughter | — | Florida |
| 65 | Pauline Williams | 13 | Daughter | — | Florida |
| 66 | Jack R. Williams THIS PERSON | 11 | Son | — | Florida |
| 67 | Claude C. Williams | 10 | Daughter | — | Florida |
| 68 | Willie P. Williams | 54 | Daughter | Practical Nurse | Florida |
| 69 | Andrew J. Strand | 53 | Head | Rural Postmaster | Florida |
| 70 | Alice B. Strand | 50 | Wife | — | Florida |
| 71 | Ray Smith | 31 | Head | Barber | Georgia |
| 72 | Jamie S. Smith | 32 | Wife | — | Florida |
| 73 | Penn Register | 29 | Head | Laborer | Florida |
| 74 | Fannie Register | 37 | Wife | — | Florida |
| 75 | Shelton Register | 11 | Son | — | Florida |
| 76 | Alma Register | 8 | Daughter | — | Florida |
| 77 | Ethelmer Register | 6 | Daughter | — | Florida |
| 78 | Tilford Register | 4 | Son | — | Florida |
| 79 | Alton Register | 1 | Son | — | Florida |
| 80 | Virginia Register | 0 | Daughter | — | 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)