IT
Isaac Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lowndes-County, Georgia
Our Model Tree links this Isaac Thomas across the 1920, 1930 and 1940 US Censuses in Lowndes-County, Georgia (XGBoost, ~Confirmed), with identified parents Isaac & Isaac — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Georgia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lowndes-County, Georgia |
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | 662 G.M.D. |
| 1935 Residence (County) | Lowndes |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 1 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Occupation | Farm Laborer |
| Township / Ward | 662 Gmd |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Earlie Thomas | Other | — | 8 | ~1932 |
| Janie Thomas | Head | — | 55 | ~1885 |
| Isaac Thomas | Son | — | 21 | ~1919 |
| Lucile Thomas | Daughter | — | 28 | ~1912 |
Census Appearances
1920
Lowndes, Georgia
Son, age 1
Lowndes, Georgia · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1930
Lowndes, Georgia
Son, age 12
Lowndes, Georgia · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Isaac Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Georgia |
| Age at First Marriage | 12 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Lowndes-County, Georgia
Son, age 21
Lowndes-County, Georgia · implied b. ~1919 — 4 household members
| Surname | Thomas |
| Given Name | Isaac |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | 662 G.M.D. |
| 1935 Residence (County) | Lowndes |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 1 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Isaac Thomas (~0.92 confidence) and father Isaac Thomas (~0.92 confidence) and mother Jannie Thomas (~0.92 confidence) and mother Janie Thomas (~0.92 confidence) and mother Annie Thomas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Isaac Thomas
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Isaac Thomas
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Jannie Thomas
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Janie Thomas
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Annie Thomas
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Isaac Thomas
Son · 1940 · age 21 · b. ~1919 · Georgia
★ You are viewing this record
Sibling
Lucile Thomas
Sibling · 1940 · age 28
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 — Lowndes-County, Georgia
Open full size
1940 US Federal Census — Lowndes-County, Georgia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00691-00062)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kadera Patterson | 21 | Daughter | Farm Laborer | Georgia |
| 42 | Fred Patterson | 19 | Son | Farm Laborer | Georgia |
| 43 | Levurt Patterson | 16 | Daughter | — | Georgia |
| 44 | V. D. Patterson | 12 | Son | — | Georgia |
| 45 | R. C. Patterson | 11 | Son | — | Georgia |
| 46 | Eula Mae Patterson | 8 | Daughter | — | Georgia |
| 47 | Calvin Patterson | 6 | Son | — | Georgia |
| 48 | John Adams | 83 | Head | Farm Laborer | Georgia |
| 49 | Mary Morgan | 33 | Daughter | Farm Laborer | Georgia |
| 50 | Ida Grace Morgan | 3 | Granddaughter | — | Georgia |
| 51 | John Jr. Adams | 10 | Son | — | Georgia |
| 52 | Thomas W. Hendrix | 46 | Head | Farmer | Florida |
| 53 | Fannie Lee Hendrix | 46 | Wife | — | Georgia |
| 54 | Urlean Hendrix | 17 | Son | — | Georgia |
| 55 | Thomas R. Hendrix | 10 | Son | — | Georgia |
| 56 | Gerald E. Hendrix | 5 | Son | — | Georgia |
| 57 | Allie Ripperer | 25 | Head | Farmer | Georgia |
| 58 | Myrtine Ripperer | 21 | Wife | — | Georgia |
| 59 | Alfred Ripperer | 1 | Son | — | Georgia |
| 60 | James F. Black | 58 | Head | Farmer | Georgia |
| 61 | Leona Black | 48 | Wife | — | Georgia |
| 62 | John D. Black | 19 | Son | Farm Laborer | Georgia |
| 63 | Charles Black | 9 | Son | — | Georgia |
| 64 | Lafatte Dockery | 33 | Head | Farmer | Georgia |
| 65 | Maude Ruth Dockery | 20 | Wife | — | Georgia |
| 66 | Jewel Wright | 12 | Niece | — | Georgia |
| 67 | Ed D. Davis | 55 | Lodger | Farm Laborer | South Carolina |
| 68 | Varnie Williams | 30 | Head | Farmer | Georgia |
| 69 | Mary Granville | 28 | Sister | School Teacher | Georgia |
| 70 | Sam Knight | 65 | Head | Common Laborer | Georgia |
| 71 | Charity Knight | 58 | Wife | — | Georgia |
| 72 | Benjie Knight | 24 | Son | Farm Laborer | Georgia |
| 73 | Luke Knight | 40 | Head | Farmer | Georgia |
| 74 | Viola Knight | 40 | Wife | Farm Laborer | South Carolina |
| 75 | Chattie Mae Knight | 9 | Daughter | — | Georgia |
| 76 | Maria Knight | 21 | Daughter | — | South Carolina |
| 77 | Janie Thomas | 55 | Head | Farmer | Georgia |
| 78 | Lucile Thomas | 28 | Daughter | Farm Laborer | Georgia |
| 79 | Isaac Thomas THIS PERSON | 21 | Son | Farm Laborer | Georgia |
| 80 | Earlie Mae Thomas | 8 | Granddaughter | — | Georgia |
Pedigree Summary
Isaac + 1 sibling
Gen 1 · 5 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)