JM
John Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Durham-County, North Carolina
Our Model Tree links this John Mack across the 1930 and 1940 US Censuses in Durham-County, North Carolina (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 11-person household.
Age 60
b. ~1880
Male
Head
Born: North Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Durham-County, North Carolina |
| Surname | Mack |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 60 |
| Marital Status | Married |
| Birthplace | North Carolina |
| 1935 Residence (City) | Lebanon |
| 1935 Residence (County) | Durham |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
| Occupation | Farmer |
| Township / Ward | Lebanon |
| Est. Birth Year | ~1880 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Mack | Head | — | 60 | ~1880 |
| Norman Mack | Son | — | 25 | ~1915 |
| Joe Mack | Son | — | 16 | ~1924 |
| Grace Mack | Spouse | — | 44 | ~1896 |
| Pearl Mack | Daughter | — | 18 | ~1922 |
| Claude Mack | Son | — | 30 | ~1910 |
| Louise Mack | Daughter | — | 8 | ~1932 |
| Ruth Mack | Daughter | — | 11 | ~1929 |
| John Mack | Son | — | 15 | ~1925 |
| Luna Mack | Daughter | — | 22 | ~1918 |
| Amos Mack | Son | — | 28 | ~1912 |
Census Appearances
1930
Wake, North …
Head, age 49
Wake, North Carolina · implied b. ~1881 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John D |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | North Carolina |
| Age at First Marriage | 23 |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Occupation | Fireman |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Veteran | No |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1940
Durham-County, North …
Head, age 60
Durham-County, North Carolina · implied b. ~1880 — 11 household members
| Surname | Mack |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 60 |
| Marital Status | Married |
| Birthplace | North Carolina |
| 1935 Residence (City) | Lebanon |
| 1935 Residence (County) | Durham |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north 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 John Mack across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mack
Head · 1940 · age 60 · b. ~1880 · North Carolina
★ 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 — Durham-County, North Carolina
Open full size
1940 US Federal Census — Durham-County, North Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02904-00338)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ted Whitted | 35 | Head | Laborer | North Carolina |
| 42 | Rila Whitted | 30 | Wife | — | North Carolina |
| 43 | Laura Whitted | 10 | Adopted daughter | — | North Carolina |
| 44 | Lura Campbell | 22 | Head | Farmer | North Carolina |
| 45 | Muttie (W) Campbell | 5 | Daughter | — | North Carolina |
| 46 | Patricia Campbell | 17 | Daughter | — | North Carolina |
| 47 | Cornell Campbell | 15 | Daughter | — | North Carolina |
| 48 | Claudie Campbell | 12 | Son | — | North Carolina |
| 49 | Dent Moore | 34 | Head | Farmer | North Carolina |
| 50 | Gladys Moore | 32 | Wife | — | North Carolina |
| 51 | William Moore | 14 | Son | — | North Carolina |
| 52 | Patsy Moore | 11 | Daughter | — | North Carolina |
| 53 | Gladys Moore | 5 | Daughter | — | North Carolina |
| 54 | James Moore | 3 | Son | — | North Carolina |
| 55 | Leonard Moore | 1 | Son | — | North Carolina |
| 56 | William Moore | 65 | Father | — | North Carolina |
| 57 | Elizabeth Moore | 60 | Mother | — | North Carolina |
| 58 | Willie Umstead | 35 | Head | Farmer | North Carolina |
| 59 | Henrietta Umstead | 25 | Wife | — | North Carolina |
| 60 | Wallace Umstead | 12 | Son | Laborer | North Carolina |
| 61 | Margaurite Umstead | 17 | Daughter | — | North Carolina |
| 62 | Walter Umstead | 12 | Son | — | North Carolina |
| 63 | Jerry Umstead | 12 | Son | — | North Carolina |
| 64 | Lucy Umstead | 7 | Daughter | — | North Carolina |
| 65 | Matty Umstead | 4 | Daughter | — | North Carolina |
| 66 | Amos Umstead | 7 | Son | — | North Carolina |
| 67 | Roland Umstead | 1 | Son | — | North Carolina |
| 68 | Otis Umstead | 1 | Son | — | North Carolina |
| 69 | John A. Umstead | 72 | Father | — | North Carolina |
| 70 | John W. Mack THIS PERSON | 60 | Head | Farmer | North Carolina |
| 71 | Grace Mack | 44 | Wife | — | North Carolina |
| 72 | Claude Mack | 30 | Son | Cleaner | North Carolina |
| 73 | Amos Mack | 28 | Son | Farmer | North Carolina |
| 74 | Norman Mack | 25 | Son | Laborer | North Carolina |
| 75 | Luna Mack | 22 | Daughter | Maid | North Carolina |
| 76 | Pearl Mack | 18 | Daughter | — | North Carolina |
| 77 | Joe Mack | 16 | Son | — | North Carolina |
| 78 | John Mack | 15 | Son | — | North Carolina |
| 79 | Ruth Mack | 11 | Daughter | — | North Carolina |
| 80 | Louise Mack | 8 | Daughter | — | North 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)