JB
John Blackwell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Person-County, North Carolina
Our Model Tree links this John Blackwell across the 1920, 1930 and 1940 US Censuses in Person-County, North Carolina (XGBoost, ~Confirmed), with identified parents John & William — first a head (b.~1907), then head of a 4-person household.
Age 33
b. ~1907
Male
Head
Born: North Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Person-County, North Carolina |
| Surname | Blackwell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Married |
| Birthplace | North Carolina |
| 1935 Residence (City) | Roxboro Township |
| 1935 Residence (County) | Person |
| Additional Details | |
| Occupation | Laborer |
| Industry | on WPA |
| Class of Worker | GW |
| Hours Worked | 50 |
| Income (1939) | 30 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
| Occupation | Laborer |
| Township / Ward | Roxboro Township |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| R Blackwell | Son | — | 5 | ~1935 |
| Elsie Blackwell | Spouse | — | 29 | ~1911 |
| John Blackwell | Son | — | 9 | ~1931 |
| John Blackwell | Head | — | 33 | ~1907 |
Census Appearances
1920
Granville, North …
Son, age 10
Granville, North Carolina · implied b. ~1910 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | John S |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | North Carolina |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1930
Person, North …
Son, age 20
Person, North Carolina · implied b. ~1910 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | North Carolina |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Can Read/Write | No |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1940
Person-County, North …
Head, age 33
Person-County, North Carolina · implied b. ~1907 — 4 household members
| Surname | Blackwell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Married |
| Birthplace | North Carolina |
| 1935 Residence (City) | Roxboro Township |
| 1935 Residence (County) | Person |
| Occupation | Laborer |
| Industry | on WPA |
| Class of Worker | GW |
| Hours Worked | 50 |
| Income (1939) | 30 |
| Highest Grade | No 4 |
| 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 Blackwell across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father John Blackwell (~0.92 confidence) and father William Blackwell (~0.92 confidence) and mother Lizzie Blackwell (~0.92 confidence) and mother Mary Blackwell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Blackwell
b. ~1880
Source father
● Household
· direct · ~0.92
Father
William Blackwell
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Lizzie Blackwell
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Mary Blackwell
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Blackwell
Head · 1940 · age 33 · b. ~1907 · 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 — Person-County, North Carolina
Open full size
1940 US Federal Census — Person-County, North Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02957-00486)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Buck Blackwell | 66 | Head | Farmer | North Carolina |
| 2 | Arthur Blackwell | 22 | Son | Laborer | North Carolina |
| 3 | Minnie Blackwell | 23 | Daughter | — | North Carolina |
| 4 | Champ Blackwell | 21 | Son | Mechanic | North Carolina |
| 5 | Carnor Blackwell | 18 | Son | Laborer | North Carolina |
| 6 | Cleo Blackwell | 17 | Daughter | — | North Carolina |
| 7 | Rubin Blackwell | 54 | Head | Farmer | North Carolina |
| 8 | Irene Blackwell | 41 | Wife | — | North Carolina |
| 9 | Richard Blackwell | 20 | Son | Laborer | North Carolina |
| 10 | Mary Blackwell | 19 | Daughter | — | North Carolina |
| 11 | Rachel Blackwell | 16 | Daughter | — | North Carolina |
| 12 | Lucy Blackwell | 14 | Daughter | — | North Carolina |
| 13 | Hennie Blackwell | 12 | Daughter | — | North Carolina |
| 14 | Olivia Blackwell | 10 | Daughter | — | North Carolina |
| 15 | Wallace Blackwell | 9 | Son | — | North Carolina |
| 16 | Sallie Blackwell | 6 | Daughter | — | North Carolina |
| 17 | Bird Blackwell | 5 | Son | — | North Carolina |
| 18 | Calvin Jones | 37 | Head | — | North Carolina |
| 19 | Annie Bee Jones | 32 | Wife | — | North Carolina |
| 20 | John Blackwell THIS PERSON | 33 | Head | Laborer | North Carolina |
| 21 | Elsie Blackwell | 29 | Wife | — | North Carolina |
| 22 | John Blackwell | 9 | Son | — | North Carolina |
| 23 | R. C. Blackwell | 5 | Son | — | North Carolina |
| 24 | Charlie Blackwell | 39 | Head | Saw Mill Worker | North Carolina |
| 25 | Beatrice Blackwell | 40 | Wife | — | North Carolina |
| 26 | Louise Blackwell | 2 | Daughter | — | Maryland |
| 27 | Arthur Harris | 20 | Boarder | — | North Carolina |
| 28 | Johnnie Cates | 58 | Head | Farmer | North Carolina |
| 29 | Johnnie Cates | 54 | Wife | — | North Carolina |
| 30 | Ephrimia Cates | 23 | Son | Laborer | North Carolina |
| 31 | Charlie Cates | 21 | Son | Laborer | North Carolina |
| 32 | Ed Cates | 20 | Son | Laborer | North Carolina |
| 33 | Roy Cates | 14 | Son | — | North Carolina |
| 34 | Isabell Cates | 13 | Daughter | — | North Carolina |
| 35 | Lois Rastade | 13 | Daughter | — | North Carolina |
| 36 | Generous Cates | 64 | Brother | Laborer | North Carolina |
| 37 | Katie Oakley | 50 | Head | Farmer | North Carolina |
| 38 | Maggie Oakley | 53 | Wife | — | North Carolina |
| 39 | Raymond Oakley | 18 | Son | Laborer | North Carolina |
| 40 | Marie Oakley | 14 | Daughter | — | North Carolina |
Pedigree Summary
John
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)