IW
Isaac Wilson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sumter-County, South Carolina
Our Model Tree links this Isaac Wilson across the 1930 and 1940 US Censuses in Sumter-County, South Carolina (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 9-person household.
Age 20
b. ~1920
Male
Son
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, South Carolina |
| Surname | Wilson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Mayesville |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 60 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Farm Laborer |
| Township / Ward | Mayesville |
| Est. Birth Year | ~1920 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| George Wilson | Son | — | 4 | ~1936 |
| Isaac Wilson | Son | — | 20 | ~1920 |
| Louise Wilson | Daughter | — | 8 | ~1932 |
| Joseph Wilson | Son | — | 13 | ~1927 |
| Will Wilson | Head | — | 74 | ~1866 |
| Edith Wilson | Daughter | — | 12 | ~1928 |
| Elijah Wilson | Son | — | 18 | ~1922 |
| Nellie Wilson | Spouse | — | 40 | ~1900 |
| Maggie Wilson | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Kershaw, South …
Son, age 10
Kershaw, South Carolina · implied b. ~1920 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wilson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Sumter-County, South …
Son, age 20
Sumter-County, South Carolina · implied b. ~1920 — 9 household members
| Surname | Wilson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Mayesville |
| 1935 Residence (County) | Sumter |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 60 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 Wilson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Isaac Wilson
Son · 1940 · age 20 · b. ~1920 · South Carolina
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Sibling
Louise Wilson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Wilson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Wilson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maggie Wilson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elijah Wilson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith Wilson
Sibling · 1940 · age 12
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 — Sumter-County, South Carolina
Open full size
1940 US Federal Census — Sumter-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03841-00207)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Will Wilson | 74 | Head | Operator | South Carolina |
| 42 | Nellie Wilson | 40 | Wife | — | South Carolina |
| 43 | Isaac Wilson THIS PERSON | 20 | Son | Farm Laborer | South Carolina |
| 44 | Elijah Wilson | 18 | Son | Farm Laborer | South Carolina |
| 45 | Maggie Wilson | 15 | Daughter | — | South Carolina |
| 46 | Joseph Wilson | 13 | Son | — | South Carolina |
| 47 | Edith Wilson | 12 | Daughter | — | South Carolina |
| 48 | Louise Wilson | 8 | Daughter | — | South Carolina |
| 49 | George Wilson | 4 | Son | — | South Carolina |
| 50 | Henry Jefferson | 40 | Head | Operator | South Carolina |
| 51 | Lizzie Jefferson | 37 | Wife | Farm Laborer | South Carolina |
| 52 | Nancy Jefferson | 20 | Son | — | South Carolina |
| 53 | Ella Jefferson | 18 | Daughter | — | South Carolina |
| 54 | William Jefferson | 14 | Son | — | South Carolina |
| 55 | Henrietta Jefferson | 13 | Daughter | — | South Carolina |
| 56 | Lucille Jefferson | 9 | Daughter | — | South Carolina |
| 57 | Henry Jr. Jefferson | 4 | Son | — | South Carolina |
| 58 | Mary Jefferson | 3 | Son | — | South Carolina |
| 59 | Ruby Jefferson | 2 | Daughter | — | South Carolina |
| 60 | Rena Jefferson | 69 | Mother | — | South Carolina |
| 61 | Clerend Sloan | 23 | Head | Farm Laborer | South Carolina |
| 62 | Carrie Sloan | 22 | Wife | — | South Carolina |
| 63 | Willie Sloan | 11 | Son | — | South Carolina |
| 64 | Alma Sloan | 4 | Daughter | — | South Carolina |
| 65 | Clerend Jr. Sloan | 3 | Son | — | South Carolina |
| 66 | Will Sloan | 2 | Son | — | South Carolina |
| 67 | Ivey Jefferson | 39 | Head | Farm Laborer | South Carolina |
| 68 | Iney Jefferson | 39 | Wife | — | South Carolina |
| 69 | Gladys Jefferson | 15 | Daughter | — | South Carolina |
| 70 | Mary Jefferson | 13 | Daughter | — | South Carolina |
| 71 | William Jefferson | 56 | Head | Operator | South Carolina |
| 72 | Julia Jefferson | 48 | Wife | — | South Carolina |
| 73 | Prime Jefferson | 45 | Son | Laborer | South Carolina |
| 74 | Iney Jefferson | 12 | Son | — | South Carolina |
| 75 | Pattie Jefferson | 11 | Daughter | — | South Carolina |
| 76 | Paul Jefferson | 9 | Son | — | South Carolina |
| 77 | George Jefferson | 8 | Son | — | South Carolina |
| 78 | Willie Jefferson | 7 | Son | — | South Carolina |
| 79 | Alonzo Jefferson | 6 | Son | — | South Carolina |
| 80 | Washington Sloan | 24 | Head | Operator | South Carolina |
Related Census Records
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)