JM
James Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sumter-County, South Carolina
Our Model Tree links this James Mack across the 1930 and 1940 US Censuses in Sumter-County, South Carolina (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 12-person household.
Age 13
b. ~1927
Male
Son
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, South Carolina |
| Surname | Mack |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Providence twp |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Providence Twp |
| Est. Birth Year | ~1927 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Wesley Mack | Son | — | 14 | ~1926 |
| Essie Mack | Daughter | — | 9 | ~1931 |
| Jerry Mack | Son | — | 19 | ~1921 |
| Martha Mack | Spouse | — | 46 | ~1894 |
| Roosevelt Mack | Son | — | 5 | ~1935 |
| Elyton Mack | Son | — | 7 | ~1933 |
| Bertha Mack | Daughter | — | 21 | ~1919 |
| Buck Mack | Head | — | 54 | ~1886 |
| Thelma Mack | Daughter | — | 25 | ~1915 |
| James Mack | Son | — | 13 | ~1927 |
| Martha Mack | Other | — | 1 | ~1939 |
| Oscar Mack | Son | — | 3 | ~1937 |
Census Appearances
1930
Lee, South …
Other, age 3
Lee, South Carolina · implied b. ~1927 — 17 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | James |
| Relationship to Head | Grand-son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Sumter-County, South …
Son, age 13
Sumter-County, South Carolina · implied b. ~1927 — 12 household members
| Surname | Mack |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Providence twp |
| 1935 Residence (County) | Sumter |
| Highest Grade | No 3 |
| 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 James Mack across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mack
Son · 1940 · age 13 · b. ~1927 · South Carolina
★ You are viewing this record
Sibling
Oscar Mack
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Mack
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elyton Mack
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wesley Mack
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Mack
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Mack
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Essie Mack
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roosevelt Mack
Sibling · 1940 · age 5
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-t0627-03841-00419)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eda Blackmon | 43 | Head | Operator | South Carolina |
| 2 | Elsie Blackmon | 23 | Daughter | — | South Carolina |
| 3 | Sam Blackmon | 21 | Son | Farm Laborer | South Carolina |
| 4 | John Blackmon | 19 | Son | Farm Laborer | South Carolina |
| 5 | Sara Blackmon | 16 | Daughter | — | South Carolina |
| 6 | Mary Lee Blackmon | 14 | Daughter | — | South Carolina |
| 7 | Johnny Brunson | 27 | Head | Farm Laborer | South Carolina |
| 8 | Emma Brunson | 30 | Wife | — | South Carolina |
| 9 | Robert Brunson | 16 | Son | Farm Laborer | South Carolina |
| 10 | Mary Sue Brunson | 14 | Daughter | — | South Carolina |
| 11 | Queenie Brunson | 12 | Daughter | — | South Carolina |
| 12 | Lillie Brunson | 10 | Daughter | — | South Carolina |
| 13 | Buck Mack | 54 | Head | Operator | South Carolina |
| 14 | Martha Mack | 46 | Wife | — | South Carolina |
| 15 | Thelma Mack | 25 | Daughter | — | South Carolina |
| 16 | Bertha Mack | 21 | Daughter | Farm Laborer | South Carolina |
| 17 | Jerry Mack | 19 | Son | — | South Carolina |
| 18 | Wesley Mack | 14 | Son | — | South Carolina |
| 19 | James Mack THIS PERSON | 13 | Son | — | South Carolina |
| 20 | Essie Mack | 9 | Daughter | — | South Carolina |
| 21 | Elyton Mack | 7 | Son | — | South Carolina |
| 22 | Roosevelt Mack | 5 | Son | — | South Carolina |
| 23 | Oscar Lee Mack | 3 | Son | — | South Carolina |
| 24 | Martha Mack | 1 | Granddaughter | — | South Carolina |
| 25 | William Mccarty | 24 | Head | Farm Laborer | South Carolina |
| 26 | Bertha Mccarty | 21 | Wife | — | South Carolina |
| 27 | William Jr Mccarty | 3 | Son | — | South Carolina |
| 28 | Annie Lee Mccarty | 2 | Daughter | — | South Carolina |
| 29 | Clarence Mccarty | 1 | Son | — | South Carolina |
| 30 | Charlie Jones | 61 | Head | Operator | South Carolina |
| 31 | Clyde Jones | 50 | Wife | — | South Carolina |
| 32 | Luna Jones | 17 | Daughter | — | South Carolina |
| 33 | Reese Jones | 16 | Daughter | — | South Carolina |
| 34 | Edward Dixon | 40 | Head | Operator | South Carolina |
| 35 | Mary Dixon | 36 | Wife | — | South Carolina |
| 36 | Sam Dixon | 20 | Son | Farm Laborer | South Carolina |
| 37 | Laura Dixon | 18 | Daughter | — | South Carolina |
| 38 | Eloise Dixon | 15 | Daughter | — | South Carolina |
| 39 | Edward Dixon | 13 | Son | — | South Carolina |
| 40 | Johnnie Dixon | 11 | Son | — | 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)