TM
Thelma Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dallas-County, Texas
Our Model Tree links this Thelma Martin across the 1920, 1930 and 1940 US Censuses in Dallas-County, Texas (XGBoost, ~Confirmed), with identified parents Arthur & John — first a daughter (b.~1920), then head of a 3-person household.
Age 20
b. ~1920
Female
Daughter
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dallas-County, Texas |
| Surname | Martin |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Dallas City |
| 1935 Residence (County) | Dallas |
| Additional Details | |
| Occupation | Advertising |
| Industry | Advertising |
| Class of Worker | PW |
| Hours Worked | 12 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Advertising |
| Township / Ward | Dallas City |
| Est. Birth Year | ~1920 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Grace Martin | Spouse | — | 45 | ~1895 |
| Thelma Martin | Daughter | — | 20 | ~1920 |
| Arthur Martin | Head | — | 49 | ~1891 |
Census Appearances
1920
Dallas, Texas
Daughter, age 1
Dallas, Texas · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Thelma Jewel |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Occupation | none |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1930
Dallas, Texas
Daughter, age 10
Dallas, Texas · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Dallas-County, Texas
Daughter, age 20
Dallas-County, Texas · implied b. ~1920 — 3 household members
| Surname | Martin |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Dallas City |
| 1935 Residence (County) | Dallas |
| Occupation | Advertising |
| Industry | Advertising |
| Class of Worker | PW |
| Hours Worked | 12 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Martin (~0.92 confidence) and father John Martin (~0.92 confidence) and father John Martin (~0.92 confidence) and mother Grace Martin (~0.92 confidence) and mother Mamie Martin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Martin
b. ~1891
Source father
● Household
· direct · ~0.92
Father
John Martin
b. ~1891
Source father
● Household
· direct · ~0.92
Father
John Martin
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Grace Martin
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Mamie Martin
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Martin
Daughter · 1940 · age 20 · b. ~1920 · Texas
★ 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 — Dallas-County, Texas
Open full size
1940 US Federal Census — Dallas-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04173-00062)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bunyan Mcdonald | 45 | Head | Salesman | Texas |
| 42 | Ena Mcdonald | 35 | Wife | — | Texas |
| 43 | Bunyan Jr. Mcdonald | 16 | Son | — | Texas |
| 44 | Douglas Mcdonald | 10 | Son | — | Texas |
| 45 | Dorothy Mcdonald | 10 | Daughter | — | Texas |
| 46 | Henry Lee | 39 | Head | Operator | No. Dakota |
| 47 | Catherine Lee | 37 | Wife | — | Texas |
| 48 | Leanna Lee | 3 | Daughter | — | Texas |
| 49 | Henry Jr. Lee | 0 | Son | — | Texas |
| 50 | James Harris | 47 | Head | Truck Driver | Arkansas |
| 51 | Susie Harris | 44 | Wife | — | Texas |
| 52 | James Jr. Harris | 21 | Son | Stenographer | Texas |
| 53 | Mary Harris | 19 | Daughter | Printer | Texas |
| 54 | R. E. Watkins | 35 | Head | Service Man | Texas |
| 55 | Ethel Watkins | 32 | Wife | — | Texas |
| 56 | Dorita Watkins | 15 | Daughter | — | Texas |
| 57 | Maurice Rielle | 46 | Head | Manager | Texas |
| 58 | Isabel Rielle | 44 | Wife | — | Oklahoma |
| 59 | Jas. B. Currie | 35 | Head | Pbx Repairman | Texas |
| 60 | Opal Currie | 28 | Wife | — | Texas |
| 61 | Adrian Currie | 2 | Son | — | Texas |
| 62 | Mary Currie | 0 | Daughter | — | Texas |
| 63 | Ethel Cummins | 47 | Head | Rubber Speaker | Texas |
| 64 | Catherine Cummins | 20 | Daughter | Photo-Grapher | Texas |
| 65 | Wendell Cummins | 16 | Son | — | Texas |
| 66 | — | None | — | — | — |
| 67 | Arthur Martin | 49 | Head | Custodian | Texas |
| 68 | Grace Martin | 45 | Wife | — | Texas |
| 69 | Thelma Martin THIS PERSON | 20 | Daughter | Advertising | Texas |
| 70 | Floyd Knight | 27 | Head | Salesman | Texas |
| 71 | Odis Knight | 25 | Wife | Saleslady | Texas |
| 72 | Mellie Knight | 65 | Mother | — | Texas |
| 73 | Harry F. Coy | 51 | Head | Chemistry | Ohio |
| 74 | Hilda Coy | 42 | Wife | — | Illinois |
| 75 | Wilbur Coy | 24 | Son | N. Y. A. | Massachusetts |
| 76 | Leo Coy | 19 | Son | Soda Fountain | Texas |
| 77 | Robert Coy | 17 | Son | Soda Fountain | Kansas |
| 78 | Charles Coy | 15 | Son | — | Kansas |
| 79 | Mary Coy | 9 | Daughter | — | Indiana |
| 80 | Jesse Batman | 31 | Head | Waiter | Mexico |
Pedigree Summary
Thelma
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)