IW
Isaac Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Madison-County, Mississippi
Our Model Tree links this Isaac Williams across the 1920, 1930 and 1940 US Censuses in Madison-County, Mississippi (XGBoost, ~Confirmed), with identified parents Cornelious & Virginia — first a head (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Head
Born: Mississippi
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Mississippi |
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 4 |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 120 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Occupation | Farmer |
| Township / Ward | Beat 4 |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Julia Williams | Daughter | — | 4 | ~1936 |
| Isaac Williams | Head | — | 29 | ~1911 |
| Doris Williams | Son | — | 13 | ~1927 |
| Elizabeth Williams | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Madison, Mississippi
Son, age 11
Madison, Mississippi · implied b. ~1909 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | Laborer |
| Industry | Home farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1930
Madison, Mississippi
Other, age 20
Madison, Mississippi · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Cousin |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | Laborer |
| Class of Worker | W |
| Can Read/Write | No |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Madison-County, Mississippi
Head, age 29
Madison-County, Mississippi · implied b. ~1911 — 4 household members
| Surname | Williams |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 4 |
| 1935 Residence (County) | Madison |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 120 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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. Identified parents: father Cornelious Williams (~0.92 confidence) and mother Virginia Williams (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Cornelious Williams
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Virginia Williams
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Isaac Williams
Head · 1940 · age 29 · b. ~1911 · Mississippi
★ 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 — Madison-County, Mississippi
Open full size
1940 US Federal Census — Madison-County, Mississippi
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02047-00819)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Jr. Dean | 28 | Head | Teacher | Mississippi |
| 42 | Earl Barney | 23 | Head | Farmer | Mississippi |
| 43 | Hulda Barney | 19 | Wife | — | Mississippi |
| 44 | Earline Barney | 2 | Daughter | — | Mississippi |
| 45 | Isaac Williams THIS PERSON | 29 | Head | Farmer | Mississippi |
| 46 | Elizabeth Williams | 25 | Wife | — | Mississippi |
| 47 | Doris Williams | 13 | Son | — | Mississippi |
| 48 | Julia Mae Williams | 4 | Daughter | — | Mississippi |
| 49 | Albert Simms | 71 | Head | Farmer | Mississippi |
| 50 | Georgia Simms | 47 | Wife | — | Mississippi |
| 51 | Lee Porter Simms | 16 | Daughter | — | Mississippi |
| 52 | Catherine Simms | 11 | Daughter | — | Mississippi |
| 53 | R. T. Simms | 21 | Son | Farm Laborer | Mississippi |
| 54 | Albert Junior Simms | 14 | Son | Farm Laborer | Mississippi |
| 55 | John Simms | 9 | Son | — | Mississippi |
| 56 | Hattie Mae Simms | 7 | Daughter | — | Mississippi |
| 57 | Edward M. Simms | 5 | Son | — | Mississippi |
| 58 | John Anderson | 45 | Head | Farmer | Mississippi |
| 59 | Lee Porter Anderson | 39 | Wife | — | Mississippi |
| 60 | Dorothy Anderson | 9 | Daughter | — | Mississippi |
| 61 | John Alex Anderson | 5 | Son | — | Mississippi |
| 62 | Minnie Williams | 50 | Head | — | Mississippi |
| 63 | Willie Williams | 42 | Wife | Farmer | Mississippi |
| 64 | Emma Williams | 18 | Daughter | — | Mississippi |
| 65 | Erasmus Williams | 16 | Son | Farm Laborer | Mississippi |
| 66 | Bennie Williams | 14 | Son | Farm Laborer | Mississippi |
| 67 | Daisy Williams | 12 | Daughter | — | Mississippi |
| 68 | Julitha Williams | 10 | Daughter | — | Mississippi |
| 69 | Mattie Mae Williams | 4 | Daughter | — | Mississippi |
| 70 | Hattie Allen | 57 | Head | — | Mississippi |
| 71 | Jane Allen | 23 | Daughter | Farmer | Mississippi |
| 72 | Caroline Allen | 18 | Daughter | Farmer | Mississippi |
| 73 | Eula Allen | 20 | Daughter in law | Farm Laborer | Mississippi |
| 74 | Jerry D. Leaves | 34 | Head | Farmer | Mississippi |
| 75 | Annie Bell Leaves | 27 | Wife | — | Mississippi |
| 76 | Cortina Leaves | 12 | Daughter | — | Mississippi |
| 77 | Helen Leaves | 11 | Daughter | — | Mississippi |
| 78 | Mabel Leaves | 9 | Daughter | — | Mississippi |
| 79 | Sally Ruth Leaves | 7 | Daughter | — | Mississippi |
| 80 | Nell Leaves | 5 | Daughter | — | Mississippi |
Pedigree Summary
Isaac
Gen 1 · 2 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)