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Thelma Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Williamson, Tennessee
Our Model Tree links this Thelma Davis across the 1910, 1920 and 1930 US Censuses in Williamson, Tennessee (XGBoost, ~Confirmed), with identified parents John & Ola — first a daughter (b.~1910), then head of a 4-person household.
Age 20
b. ~1910
Female
Daughter
Born: Tennessee
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Williamson, Tennessee |
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Teacher |
| Township / Ward | Civil District No 9 Part Of |
| Est. Birth Year | ~1910 |
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 1930 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Thelma Davis | Daughter | — | 20 | ~1910 |
| John Davis | Head | — | 52 | ~1878 |
| Ada Davis | Other | — | 52 | ~1878 |
| John Davis | Son | — | 11 | ~1919 |
Census Appearances
1910
Williamson, Tennessee
Daughter, age
Williamson, Tennessee · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Thelma E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1920
Williamson, Tennessee
Daughter, age 10
Williamson, Tennessee · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1930
Williamson, Tennessee
Daughter, age 20
Williamson, Tennessee · implied b. ~1910 — 4 household members
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 Thelma Davis across 3 US Census years (1910, 1920 and 1930) in Williamson, Tennessee, using XGBoost record linkage. Identified parents: father John Davis (~0.92 confidence) and mother Ola Davis (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Davis
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Ola Davis
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Davis
Daughter · 1930 · age 20 · b. ~1910 · Tennessee
★ You are viewing this record
Sibling
John Davis
Sibling · 1930 · 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
1930 US Federal Census — Williamson, Tennessee
Open full size
1930 US Federal Census — Williamson, Tennessee
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2285unit:0735)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Fitzgerald | 24 | Boarder | Truck Driver | Tennessee |
| 2 | Patience Little | 67 | Sister | Practical Nurse | Tennessee |
| 3 | Marvin T. Regen | 32 | Head | Undertaker | Tennessee |
| 4 | Carrie Regen | 47 | Wife-H | — | Tennessee |
| 5 | Clair-Ab Regen | 27 | Son | Agent | Tennessee |
| 6 | Will M. Regen | 22 | Son | Teacher | Tennessee |
| 7 | John B. Regen | 20 | Son | — | Tennessee |
| 8 | Perkins Cannon | 42 | Head | Sales Manager | Tennessee |
| 9 | Susie M. Cannon | 49 | Wife-H | — | Tennessee |
| 10 | Alice Cannon | 12 | Daughter | — | Tennessee |
| 11 | Henry Cannon | 12 | Son | — | Tennessee |
| 12 | Jennie Cannon | 10 | Daughter | — | Tennessee |
| 13 | James E. Gentry | 55 | Head | Farmer | Tennessee |
| 14 | Etta Gentry | 25 | Wife-H | — | Tennessee |
| 15 | Thelma Gentry | 12 | Daughter | — | Tennessee |
| 16 | Virginia Gentry | 7 | Daughter | — | Tennessee |
| 17 | Leona Gentry | 2 | Daughter | — | Tennessee |
| 18 | Dave E. Webb | 52 | Head | Constable | Tennessee |
| 19 | Josephine Webb | 48 | Wife-H | — | Tennessee |
| 20 | John D. Rogers | 35 | Head | Messenger | Tennessee |
| 21 | Lillie B. Rogers | 29 | Wife-H | — | Tennessee |
| 22 | John D. Rogers | 12 | Son | — | Tennessee |
| 23 | John Davis | 52 | Head | Carpenter | Tennessee |
| 24 | Ada Davis | 52 | Wife-H | — | Tennessee |
| 25 | Thelma Davis THIS PERSON | 20 | Daughter | Teacher | Tennessee |
| 26 | John I. Davis | 11 | Son | — | Tennessee |
| 27 | William Arrington | 39 | Head | Laborer | Tennessee |
| 28 | Allene Arrington | 23 | Wife-H | — | Tennessee |
| 29 | Earnest R. Arrington | 5 | Son | — | Tennessee |
| 30 | Joe Hooper | 61 | Boarder | Farmer | Tennessee |
| 31 | Tall T. Ridge | 37 | Head | Laborer | Tennessee |
| 32 | Jessie Ridge | 32 | Wife-H | — | Tennessee |
| 33 | Arwin Ridge | 14 | Son | — | Tennessee |
| 34 | Sarah L. Ridge | 10 | Daughter | — | Tennessee |
| 35 | Mary E. Ridge | 7 | Daughter | — | Tennessee |
| 36 | Louis Smith | 22 | Head | Laborer | Tennessee |
| 37 | Nellie B. Smith | 16 | Wife-H | — | Tennessee |
| 38 | Johnson Farmer | 54 | Head | Farmer | Tennessee |
| 39 | Susie Farmer | 41 | Wife-H | — | Tennessee |
| 40 | Stonewall Davis | 50 | Head | Farmer | Tennessee |
| 41 | Fannie Davis | 39 | Wife-H | — | Tennessee |
| 42 | Waymon Davis | 22 | Son | Laborer | Tennessee |
| 43 | L. C. Davis | 18 | Son | Laborer | Tennessee |
| 44 | Walter L. Davis | 15 | Son | Laborer | Tennessee |
| 45 | Algia Davis | 14 | Son | Laborer | Tennessee |
| 46 | Darris Davis | 10 | Son | — | Tennessee |
| 47 | Stonewall Davis | 2 | Son | — | Tennessee |
| 48 | Lula M. Pointer | 23 | Boarder | — | Tennessee |
| 49 | Sandy Brown | 66 | Head | Farmer | Tennessee |
| 50 | Maggie Brown | 68 | Wife-H | — | Irish Free State |
Pedigree Summary
Thelma + 1 sibling
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)