IJ
Isaac Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Richland-County, South Carolina
Our Model Tree links this Isaac Johnson across the 1920, 1930 and 1940 US Censuses in Richland-County, South Carolina (XGBoost, ~Confirmed), with identified parents William & Hester — first a son (b.~1921), then head of a 11-person household.
Age 19
b. ~1921
Male
Son
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Richland-County, South Carolina |
| Surname | Johnson |
| Given Name | Isaac |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | District #9 |
| 1935 Residence (County) | Richland |
| Additional Details | |
| Occupation | Lumber Stacker |
| Industry | Saw mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 576 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Lumber Stacker |
| Township / Ward | District 9 |
| Est. Birth Year | ~1921 |
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 Isaac | Age | Birth yr |
|---|---|---|---|---|
| Corar Johnson | Daughter | — | 13 | ~1927 |
| Inez Johnson | Daughter | — | 12 | ~1928 |
| May Johnson | Daughter | — | 5 | ~1935 |
| Dora Johnson | Daughter | — | 15 | ~1925 |
| Evella Johnson | Daughter | — | 17 | ~1923 |
| Newton Johnson | Head | — | 44 | ~1896 |
| Horace Johnson | Son | — | 8 | ~1932 |
| Irvine Johnson | Son | — | 11 | ~1929 |
| Isaac Johnson | Son | — | 19 | ~1921 |
| Nathaniel Johnson | Son | — | 21 | ~1919 |
| Ella Johnson | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Richland, South …
Son, age 1
Richland, South Carolina · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| 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 |
1930
Richland, South …
Son, age 10
Richland, South Carolina · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| 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
Richland-County, South …
Son, age 19
Richland-County, South Carolina · implied b. ~1921 — 11 household members
| Surname | Johnson |
| Given Name | Isaac |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | District #9 |
| 1935 Residence (County) | Richland |
| Occupation | Lumber Stacker |
| Industry | Saw mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 576 |
| Highest Grade | No 7 |
| 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 Isaac Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Johnson (~0.92 confidence) and father Hester Johnson (~0.92 confidence) and father Newton Johnson (~0.92 confidence) and mother Ella Johnson (~0.92 confidence) and mother Ella Johnson (~0.92 confidence) and mother Ellen Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Johnson
b. ~1856
Source father
● Household
· direct · ~0.92
Father
Hester Johnson
b. ~1896
Source father
● Household
· direct · ~0.92
Father
Newton Johnson
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Ella Johnson
b. ~1897
Source mother
● Household
· direct · ~0.92
Mother
Ella Johnson
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Ellen Johnson
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Isaac Johnson
Son · 1940 · age 19 · b. ~1921 · South Carolina
★ You are viewing this record
Sibling
Evella Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Inez Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nathaniel Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dora Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Horace Johnson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Corar Johnson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
May Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irvine Johnson
Sibling · 1940 · age 11
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 — 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-t0627-03835-00083)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Annie Lee Critz'S | 15 | daughter | — | South Carolina |
| 42 | Leila Critz'S | 16 | daughter | — | South Carolina |
| 43 | Gardner Critz'S | 12 | grand son | — | South Carolina |
| 44 | Benjamin Critz'S | 9 | grand son | — | South Carolina |
| 45 | Noland Critz'S | 4 | grand son | — | South Carolina |
| 46 | Rosabel Critz'S | 7 | grand daughter | — | South Carolina |
| 47 | Heyward Critz'S | 12 | nephew | — | South Carolina |
| 48 | Vandey B Williams | 32 | Head | Operator | South Carolina |
| 49 | Francena Williams | 25 | wife | Laborer | South Carolina |
| 50 | Rosalie Williams | 12 | daughter | — | South Carolina |
| 51 | Jessie M. Williams | 7 | daughter | — | South Carolina |
| 52 | Sam Williams | 5 | son | — | South Carolina |
| 53 | Willie B Williams | 1 | son | — | South Carolina |
| 54 | Joe Capers | 57 | Head | Operator | South Carolina |
| 55 | Fannie Capers | 39 | wife | Laborer | South Carolina |
| 56 | Joe Jr. Capers | 18 | son | Laborer | South Carolina |
| 57 | Leona Capers | 15 | daughter | Laborer | South Carolina |
| 58 | Essie Capers | 13 | daughter | — | South Carolina |
| 59 | Lucille Capers | 12 | daughter | — | South Carolina |
| 60 | Joel Morris | 29 | Head | Operator | South Carolina |
| 61 | Lula V Morris | 25 | wife | Laborer | South Carolina |
| 62 | Arthur Morris | 9 | son | — | South Carolina |
| 63 | John W Morris | 6 | son | — | South Carolina |
| 64 | Alexandrie Morris | 4 | daughter | — | South Carolina |
| 65 | Martha Morris | 3 | daughter | — | South Carolina |
| 66 | Lulelia Morris | 2 | daughter | — | South Carolina |
| 67 | Zeagler Johnson | 47 | Head | Operator | South Carolina |
| 68 | Susan Johnson | 62 | wife | Laborer | South Carolina |
| 69 | Callentina Johnson | 78 | mother | — | South Carolina |
| 70 | Newton Johnson | 44 | Head | Operator | South Carolina |
| 71 | Ella Johnson | 43 | wife | Laborer | South Carolina |
| 72 | Nathaniel Johnson | 21 | son | Log Roller | South Carolina |
| 73 | Isaac Johnson THIS PERSON | 19 | son | Lumber Stacker | South Carolina |
| 74 | Evella Johnson | 17 | daughter | — | South Carolina |
| 75 | Dora Johnson | 15 | daughter | — | South Carolina |
| 76 | Corar Johnson | 13 | daughter | — | South Carolina |
| 77 | Inez Lee Johnson | 12 | daughter | — | South Carolina |
| 78 | Irvine Johnson | 11 | son | — | South Carolina |
| 79 | Horace Johnson | 8 | son | — | South Carolina |
| 80 | May E Johnson | 5 | daughter | — | South Carolina |
Pedigree Summary
Isaac + 8 siblings
Gen 1 · 6 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)