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Grace Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bexar-County, Texas
Our Model Tree links this Grace Martin across the 1920, 1930 and 1940 US Censuses in Bexar-County, Texas (XGBoost, ~Confirmed), with identified parents Teofilo & Theo — first a daughter (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Female
Daughter
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bexar-County, Texas |
| Surname | Martin |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | San Antonio City |
| 1935 Residence (County) | Bexar |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Welding Supply |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1176 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Bookkeeper |
| Township / Ward | San Antonio City |
| Est. Birth Year | ~1915 |
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 Grace | Age | Birth yr |
|---|---|---|---|---|
| Anna Johnson | Head | — | 51 | ~1889 |
| Grace Martin | Daughter | — | 25 | ~1915 |
| Effie Johnson | Daughter | — | 31 | ~1909 |
| Billy Martin | Other | — | 7 | ~1933 |
Census Appearances
1920
Bexar, Texas
Daughter, age 6
Bexar, Texas · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Mexico |
| Occupation | none |
| Speaks English | Yes |
| Mother Tongue | Spanish |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1930
Bexar, Texas
Daughter, age 16
Bexar, Texas · implied b. ~1914 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Mexican |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Mexico |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Bexar-County, Texas
Daughter, age 25
Bexar-County, Texas · implied b. ~1915 — 4 household members
| Surname | Martin |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | San Antonio City |
| 1935 Residence (County) | Bexar |
| Occupation | Bookkeeper |
| Industry | Welding Supply |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1176 |
| 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 Grace Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Teofilo Martinez (~0.92 confidence) and father Theo Martinez (~0.92 confidence) and mother Lombe Martinez (~0.92 confidence) and mother Anna Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Teofilo Martinez
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Theo Martinez
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Lombe Martinez
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Anna Johnson
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Grace Martin
Daughter · 1940 · age 25 · b. ~1915 · Texas
★ You are viewing this record
Sibling
Effie Johnson
Sibling · 1940 · age 31
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 — Bexar-County, Texas
Open full size
1940 US Federal Census — Bexar-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04205-00269)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Myra Greene | 53 | Head | — | Texas |
| 42 | Albert Greene | 32 | Son | Army Draftsman | Texas |
| 43 | Mary Greene | 29 | Daughter | — | Philippines |
| 44 | Anna E. Johnson | 51 | Head | — | Texas |
| 45 | Effie Johnson | 31 | Daughter | Stenographer | Texas |
| 46 | Grace Martin THIS PERSON | 25 | Daughter | Bookkeeper | Texas |
| 47 | Billy Joe Martin | 7 | Grandson | — | Texas |
| 48 | Sterling Ingram | 64 | Head | Instrument Maker | Missouri |
| 49 | Maud E. Ingram | 61 | Wife | — | Illinois |
| 50 | H. Eugene Ingram | 33 | Son | — | Missouri |
| 51 | Ray F. Minger | 49 | Head | Retired Army Officer | Pennsylvania |
| 52 | John F. Minger | 16 | Son | — | Texas |
| 53 | Robert L. Menefee | 65 | Head | Surveyor At Home | Texas |
| 54 | L. Florence Menefee | 54 | Wife | — | Texas |
| 55 | Bryce L. Miller | 56 | Head | Lumber Salesman | Texas |
| 56 | Ruth Miller | 60 | Wife | — | Texas |
| 57 | Sol Frank | 57 | Head | Retail Merchant | Russia |
| 58 | Rose Frank | 44 | Wife | — | Missouri |
| 59 | Irving Frank | 21 | Son | Dry Goods Clerk | Texas |
| 60 | Selig Frank | 20 | Son | — | Texas |
| 61 | Melvin Frank | 18 | Son | — | Texas |
| 62 | Celia Frank | 16 | Daughter | — | Texas |
| 63 | Leanore Frank | 10 | Daughter | — | Texas |
| 64 | Sarah Costanzo | 75 | Mother | — | Russia |
| 65 | Abraham Goldberg | 37 | Head | Clothing Salesman | Russia |
| 66 | Freda Goldberg | 35 | Wife | — | Texas |
| 67 | Evelyn Goldberg | 11 | Daughter | — | Texas |
| 68 | Ruth Carolyn Goldberg | 6 | Daughter | — | Texas |
| 69 | Shirley Goldberg | 5 | Daughter | — | Texas |
| 70 | Alice Siler | 18 | Maid | Maid | Texas |
| 71 | S. Sterling Moore | 30 | Head | Obstetrician | Texas |
| 72 | Dorothy M. Moore | 30 | Wife | — | Oklahoma |
| 73 | Patricia Moore | 5 | Daughter | — | Ohio |
| 74 | William L. Lund | 51 | Head | Sales Manager | Minnesota |
| 75 | Anna C. Lund | 48 | Wife | — | Minnesota |
| 76 | William J. Block | 50 | Head | Fruit Broker | New York |
| 77 | Irene Block | 47 | Wife | School Teacher | Texas |
| 78 | Mary Irene Block | 22 | Daughter | Technician | Indiana |
| 79 | William J. Jr. Block | 18 | Son | — | Texas |
| 80 | Mary Mcnelly | 77 | Mother-in-law | — | Tennessee |
Pedigree Summary
Grace + 1 sibling
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)