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Isaac Jones — 1940 US Census Record
Model Tree available1940 United States Federal Census · Berkeley-County, South Carolina
Our Model Tree links this Isaac Jones across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Berkeley-County, South Carolina (XGBoost, ~Confirmed), with identified parents Maryetta & Add — first a head (b.~1899), then head of a 4-person household.
Age 41
b. ~1899
Male
Head
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Berkeley-County, South Carolina |
| Surname | Jones |
| Given Name | Isaac S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | First St. John Berkeley Township |
| 1935 Residence (County) | Berkeley |
| Additional Details | |
| Occupation | Salesman |
| Industry | Car Dealer |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Salesman |
| Township / Ward | First St John Berkeley Township |
| Est. Birth Year | ~1899 |
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 Isaac | Age | Birth yr |
|---|---|---|---|---|
| Geraldine Jones | Daughter | — | 12 | ~1928 |
| Isaac Jones | Head | — | 41 | ~1899 |
| Nelma Mellard | Other | — | 4 | ~1936 |
| Thelma Jones | Spouse | — | 31 | ~1909 |
Census Appearances
1900
Berkeley, South …
Son, age 1
Berkeley, South Carolina · implied b. ~1899 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isaac G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Birth Month | Mar |
| Birth Year | 1899 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1910
Berkeley, South …
Son, age 11
Berkeley, South Carolina · implied b. ~1899 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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 |
1920
Berkeley, South …
Son, age 20
Berkeley, South Carolina · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isaac |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farm Laborer |
| Industry | Home farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Berkeley, South …
Head, age 30
Berkeley, South Carolina · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Isaac S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 26 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Driver |
| Industry | Bread Truck |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Berkeley-County, South …
Head, age 41
Berkeley-County, South Carolina · implied b. ~1899 — 4 household members
| Surname | Jones |
| Given Name | Isaac S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | First St. John Berkeley Township |
| 1935 Residence (County) | Berkeley |
| Occupation | Salesman |
| Industry | Car Dealer |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Jones across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Maryetta Jones (~0.92 confidence) and father Add Jones (~0.92 confidence) and mother Mandy Jones (~0.92 confidence) and father Mark Jones (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Maryetta Jones
b. ~1861
Source mother
● Household
· direct · ~0.92
Father
Add Jones
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Mandy Jones
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
Mark Jones
b. ~1867
Source father
● Household
· direct · ~0.92
This person
Anchor record
Isaac Jones
Head · 1940 · age 41 · b. ~1899 · South 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 — Berkeley-County, South Carolina
Open full size
1940 US Federal Census — Berkeley-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03791-00219)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | N. Joan Ford | 12 | Daughter | — | South Carolina |
| 2 | James W. Keyes | 29 | Head | Principal | Alabama |
| 3 | Gladys R. Keyes | 20 | Wife | Clerk | South Carolina |
| 4 | Isaac S. Jones THIS PERSON | 41 | Head | Salesman | South Carolina |
| 5 | Thelma M. Jones | 31 | Wife | Manager | South Carolina |
| 6 | Geraldine D. Jones | 12 | Daughter | — | South Carolina |
| 7 | Nelma S. Mellard | 4 | Niece | — | South Carolina |
| 8 | J. C. Mellard | 30 | Head | — | South Carolina |
| 9 | Allan Sinkler | 54 | Head | Carpenter | South Carolina |
| 10 | V. Maude Sinkler | 45 | Wife | — | England |
| 11 | Allan, Jr. Sinkler | 15 | Son | — | Oregon |
| 12 | Clinton M. Wright | 41 | Head | Core Driller | Wisconsin |
| 13 | Mary P. Wright | 26 | Wife | — | English |
| 14 | Walter W. Wright | 2 | Son | — | Indiana |
| 15 | Jerry O'Neal | 18 | Head | Rodman | Iowa |
| 16 | Carlene D. O'Neal | 17 | Wife | — | Missouri |
| 17 | Erling T. Johnson | 36 | Head | Carpenter | Illinois |
| 18 | Garnet Johnson | 21 | Wife | — | Missouri |
| 19 | Janet Sue Johnson | 2 | Daughter | — | Missouri |
| 20 | Frank Ramsey | 32 | Head | Lineman | Arkansas |
| 21 | Florence C. Ramsey | 26 | Wife | — | South Carolina |
| 22 | Ward F., Jr. Ramsey | 8 | Son | — | South Carolina |
| 23 | William C. Ramsey | 7 | Son | — | South Carolina |
| 24 | S. Carolyn Ramsey | 5 | Daughter | — | South Carolina |
| 25 | Georgia Kate Ramsey | 2 | Daughter | — | South Carolina |
| 26 | Sidney S. Sheppard | 40 | Head | Crane Tractor Operat. | North Carolina |
| 27 | Carter W. O'Neal | 41 | Head | Carpenter | Iowa |
| 28 | Lavon O'Neal | 34 | Wife | — | Iowa |
| 29 | Wayne O'Neal | 12 | Son | — | Iowa |
| 30 | J. Arthur Fidell | 33 | Head | Night Superintendent | Wisconsin |
| 31 | Mary K. Fidell | 33 | Wife | — | Wisconsin |
| 32 | Richard H. Fidell | 8 | Son | — | Minnesota |
| 33 | John A. Fidell | 5 | Son | — | Wisconsin |
| 34 | Henry P. Johnson | 41 | Head | Carpenter | Wisconsin |
| 35 | Ruby S. Johnson | 29 | Wife | — | Wisconsin |
| 36 | Mildred Johnson | 8 | Daughter | — | Illinois |
| 37 | Raleigh Conwell | 40 | Head | Carpenter | Indiana |
| 38 | Laura H. Conwell | 34 | Wife | — | Indiana |
| 39 | Russell Nichols | 31 | Head | Concrete Foreman | Missouri |
| 40 | Carmaleta Nichols | 27 | Wife | — | Missouri |
Related Census Records
Pedigree Summary
Isaac
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)