WM
William Mack — 1920 US Census Record
Model Tree available1920 United States Federal Census · Darlington, South Carolina
Our Model Tree links this William Mack across the 1920, 1930 and 1940 US Censuses in Darlington, South Carolina (XGBoost, ~Confirmed), with identified parents John & Willie — first a son (b.~1917), then head of a 4-person household.
Age 3
b. ~1917
Male
Son
Born: South Carolina
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Darlington, South Carolina |
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Occupation | none |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Lamar Township |
| Est. Birth Year | ~1917 |
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 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Ethel Mack | Daughter | — | 1 | ~1919 |
| William Mack | Son | — | 3 | ~1917 |
| Ida Mack | Spouse | — | 25 | ~1895 |
| John Mack | Head | — | 27 | ~1893 |
Census Appearances
1920
Darlington, South …
Son, age 3
Darlington, South Carolina · implied b. ~1917 — 4 household members
| Surname | Mack |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Darlington, South …
Son, age 14
Darlington, South Carolina · implied b. ~1916 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Willie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 14 |
| 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
Darlington-County, South …
Head, age 24
Darlington-County, South Carolina · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | Wallace |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | School District 12 High Hill |
| 1935 Residence (County) | Darlington |
| Occupation | Farm Hand |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 150 |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mack (~0.92 confidence) and father Willie Mack (~0.92 confidence) and father John Mack (~0.84 confidence) and mother Mary Mack (~0.84 confidence) and mother Annie Mack (~0.92 confidence) and mother Ida Mack (~0.92 confidence). The pedigree spans 2 generations with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
John Mack
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Willie Mack
b. ~1882
Source father
● Household
· direct · ~0.92
Father
John Mack
b. ~1868
Source father>father
● Household
· direct · ~0.84
Mother
Mary Mack
b. ~1865
Source father>mother
● Household
· direct · ~0.84
Mother
Annie Mack
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Ida Mack
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mack
Son · 1920 · age 3 · b. ~1917 · South Carolina
★ You are viewing this record
Sibling
Ethel Mack
Sibling · 1920 · age 1
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
1920 US Federal Census — Darlington, South Carolina
Open full size
1920 US Federal Census — Darlington, South Carolina
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1692unit:0163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Willie Rivers | 31 | Head | Laborer | South Carolina |
| 2 | Annie Rivers | 26 | Wife | None | South Carolina |
| 3 | Emma Rivers | 11 | Daughter | None | South Carolina |
| 4 | Annie Rivers | 10 | Daughter | None | South Carolina |
| 5 | Ira Rivers | 4 | Daughter | None | South Carolina |
| 6 | Annie Rivers | 1 | Son | None | South Carolina |
| 7 | Frank Rivers | 5 | Son | None | South Carolina |
| 8 | Frank Rivers | 3 | Son | None | South Carolina |
| 9 | Jessie Rivers | 1 | Son | None | South Carolina |
| 10 | John H. Mack | 27 | Head | Farmer | South Carolina |
| 11 | Ida Mack | 25 | Wife | None | South Carolina |
| 12 | William Mack THIS PERSON | 3 | Son | None | South Carolina |
| 13 | Ethel Mack | 1 | Daughter | None | South Carolina |
| 14 | Jerry S. Mack | 52 | Head | Farmer | South Carolina |
| 15 | Mary Mack | 53 | Wife | None | South Carolina |
| 16 | Ernest Mack | 23 | Son | Laborer | South Carolina |
| 17 | Essie Mack | 18 | Daughter | None | South Carolina |
| 18 | Early Mack | 14 | Daughter | None | South Carolina |
| 19 | George Doniera | 18 | Nephew | Laborer | South Carolina |
| 20 | Edward Woods | 55 | Head | Farmer | South Carolina |
| 21 | Alice L. Woods | 40 | Wife | None | South Carolina |
| 22 | Rebecca Woods | 15 | Daughter | None | South Carolina |
| 23 | Mackavie Woods | 12 | Son | None | South Carolina |
| 24 | Roman Woods | 10 | Son | None | South Carolina |
| 25 | Silvie Woods | 9 | Daughter | None | South Carolina |
| 26 | Ira S. Woods | 7 | Son | None | South Carolina |
| 27 | Catherine Woods | 4 | Daughter | None | South Carolina |
| 28 | Dorthy Woods | 1 | Daughter | None | South Carolina |
| 29 | Junie Jackson | 37 | Head | Farmer | South Carolina |
| 30 | Junie Jackson | 32 | Wife | None | South Carolina |
| 31 | James E. Jackson | 6 | Son | None | South Carolina |
| 32 | James Best | 24 | Head | Farmer | South Carolina |
| 33 | Ethel Best | 23 | Wife | None | South Carolina |
| 34 | Neil Best | 1 | Son | None | South Carolina |
| 35 | Mittie Evans | 16 | Cousin | Laborer | South Carolina |
| 36 | Juanita Evans | 15 | Cousin | Laborer | South Carolina |
| 37 | Lewis Morrell | 30 | Head | Farmer | South Carolina |
| 38 | Bessie Morrell | 27 | Wife | None | South Carolina |
| 39 | Ford Morrell | 13 | Son | None | South Carolina |
| 40 | W. E. Morrell | 4 | Son | None | South Carolina |
| 41 | Annie Watford | 58 | Mother | None | South Carolina |
| 42 | Isaac Belton | 55 | Head | Laborer | South Carolina |
| 43 | Annie Belton | 16 | Daughter | Laborer | South Carolina |
| 44 | Marie Belton | 17 | Cousin | Laborer | South Carolina |
| 45 | Marie Benjamin | 2 | Adopted Son | None | South Carolina |
| 46 | Lynton Belton | 22 | Brother | Laborer | South Carolina |
| 47 | Thomas Goodson | 58 | Head | Farmer | South Carolina |
| 48 | Jamie Goodson | 52 | Wife | None | South Carolina |
| 49 | Maggie Goodson | 16 | Daughter | None | South Carolina |
| 50 | George H. Mccullen | 55 | Head | Farmer | South Carolina |
Pedigree Summary
William + 1 sibling
Gen 1 · 4 parents
~0.92
Gen 2 · 2 grandparents
~0.84
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)