WM
William Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Richland-County, South Carolina
Our Model Tree links this William Mack across the 1930 and 1940 US Censuses in Richland-County, South Carolina (XGBoost, ~Confirmed) — first a head (b.~1907), then head of a 9-person household.
Age 33
b. ~1907
Male
Head
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Richland-County, South Carolina |
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Wayside |
| 1935 Residence (County) | Richland |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Wayside |
| Est. Birth Year | ~1907 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Dinah Mack | Spouse | — | 32 | ~1908 |
| Claude Mack | Son | — | 5 | ~1935 |
| Arthur Mack | Son | — | 8 | ~1932 |
| George Mack | Son | — | 7 | ~1933 |
| Elizabeth Mack | Daughter | — | ~1940 | |
| Willenia Mack | Daughter | — | 9 | ~1931 |
| Isaac Mack | Son | — | 3 | ~1937 |
| William Mack | Head | — | 33 | ~1907 |
| Dorothy Mack | Daughter | — | 1 | ~1939 |
Census Appearances
1930
Lexington, South …
Other, age 22
Lexington, South Carolina · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Williams, Haskell |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | Alabama |
| Occupation | none |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Richland-County, South …
Head, age 33
Richland-County, South Carolina · implied b. ~1907 — 9 household members
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Wayside |
| 1935 Residence (County) | Richland |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| 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 William Mack across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mack
Head · 1940 · age 33 · b. ~1907 · South Carolina
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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 — Richland-County, South Carolina
Open full size
1940 US Federal Census — Richland-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03835-00418)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sylvester Jr Cook | 3 | Grandson | — | South Carolina |
| 42 | Beatrice P Cook | 1 | Granddaughter | — | South Carolina |
| 43 | Henry Davis | 35 | Head | Laborer | South Carolina |
| 44 | Lillie Mae Davis | 25 | Wife | — | South Carolina |
| 45 | Pernetta Gibson | 14 | Sister-in-law | Laborer | South Carolina |
| 46 | William Mack THIS PERSON | 33 | Head | — | South Carolina |
| 47 | Dinah Mack | 32 | Wife | — | South Carolina |
| 48 | Willenia Mack | 9 | Daughter | — | South Carolina |
| 49 | Arthur Mack | 8 | Son | — | South Carolina |
| 50 | George Mack | 7 | Son | — | South Carolina |
| 51 | Claude Mack | 5 | Son | — | South Carolina |
| 52 | Isaac Mack | 3 | Son | — | South Carolina |
| 53 | Dorothy Mack | 1 | Daughter | — | South Carolina |
| 54 | Elizabeth Mack | 0 | Daughter | — | South Carolina |
| 55 | Charlie Green | 61 | Head | Fireman | South Carolina |
| 56 | Malinda Green | 40 | Wife | — | South Carolina |
| 57 | Isaac Green | 25 | Son | Laborer | South Carolina |
| 58 | Charlie Green | 16 | Son | — | South Carolina |
| 59 | William Green | 15 | Son | — | South Carolina |
| 60 | Frances Green | 13 | Daughter | — | South Carolina |
| 61 | Augusta Green | 12 | Son | — | South Carolina |
| 62 | Oscar Green | 10 | Son | — | South Carolina |
| 63 | Nathan Green | 7 | Son | — | South Carolina |
| 64 | Willie Green | 5 | Son | — | South Carolina |
| 65 | Mack Penn | 60 | Head | Laborer | South Carolina |
| 66 | Maggie Penn | 60 | Wife | — | South Carolina |
| 67 | Burtie Thompson | 26 | Head | Laborer | South Carolina |
| 68 | Mattie Thompson | 24 | Wife | — | South Carolina |
| 69 | Joe Lewis Thompson | 2 | Son | — | South Carolina |
| 70 | Henry Guider | 46 | Head | Laborer | South Carolina |
| 71 | Zephra Guider | 35 | Wife | — | South Carolina |
| 72 | Deanna Guider | 15 | Daughter | — | South Carolina |
| 73 | Ella Jeter | 31 | Head | — | South Carolina |
| 74 | James Jeter | 19 | Son | Laborer | South Carolina |
| 75 | Robert Jeter | 18 | Son | Laborer | South Carolina |
| 76 | Nathan Jeter | 17 | Son | — | South Carolina |
| 77 | Madgeline Jeter | 16 | Daughter | — | South Carolina |
| 78 | Ernest Jeter | 14 | Son | — | South Carolina |
| 79 | Louis Pearson | 65 | Head | — | South Carolina |
| 80 | Ophelia Pearson | 40 | Daughter | Maid | South Carolina |
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)