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Mary Martinez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Yavapai-County, Arizona
Our Model Tree links this Mary Martinez across the 1930 and 1940 US Censuses in Yavapai-County, Arizona (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Female
Daughter
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Yavapai-County, Arizona |
| Surname | Martinez |
| Given Name | Mary Louisa |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Clemenceau town |
| 1935 Residence (County) | Yavapai |
| Additional Details | |
| Industry | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Township / Ward | Clemenceau Town |
| Est. Birth Year | ~1925 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Doris Martinez | Daughter | — | 9 | ~1931 |
| Josephine Martinez | Daughter | — | 3 | ~1937 |
| Pauline Martinez | Daughter | — | 6 | ~1934 |
| Guadalupe Martinez | Spouse | — | 29 | ~1911 |
| Virginia Martinez | Daughter | — | 4 | ~1936 |
| Mary Martinez | Daughter | — | 15 | ~1925 |
| Luis Martinez | Head | — | 49 | ~1891 |
| Asencion Martinez | Son | — | 10 | ~1930 |
| Pascual Martinez | Son | — | 12 | ~1928 |
| Ellen Martinez | Daughter | — | 14 | ~1926 |
| Walter Martinez | Son | — | 7 | ~1933 |
Census Appearances
1930
Yavapai, Arizona
Daughter, age 5
Yavapai, Arizona · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Mary L |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Mexican |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Arizona |
| Occupation | none |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Yavapai-County, Arizona
Daughter, age 15
Yavapai-County, Arizona · implied b. ~1925 — 11 household members
| Surname | Martinez |
| Given Name | Mary Louisa |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Clemenceau town |
| 1935 Residence (County) | Yavapai |
| Industry | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
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 Mary Martinez across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Martinez
Daughter · 1940 · age 15 · b. ~1925 · Arizona
★ You are viewing this record
Sibling
Ellen Martinez
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Martinez
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pascual Martinez
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Asencion Martinez
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Martinez
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Martinez
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Martinez
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Martinez
Sibling · 1940 · age 4
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 — Yavapai-County, Arizona
Open full size
1940 US Federal Census — Yavapai-County, Arizona
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00114-00763)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Lou Cota | 3 | daughter | — | Mexico |
| 2 | Calixtro Torres | 72 | Head | — | Mexico |
| 3 | Maria Torres | 76 | wife | — | Mexico |
| 4 | Sam Gibson | 70 | Head | Road Construction | Arizona |
| 5 | Alice Gibson | 40 | wife | — | Arizona |
| 6 | Amy Gibson | 15 | daughter | — | Arizona |
| 7 | Josiah Gibson | 7 | son | — | Arizona |
| 8 | Gada Gibson | 5 | daughter | — | Arizona |
| 9 | Samuel Gibson | 1 | son | — | Arizona |
| 10 | Jennie Crawford | 60 | Lodger | — | Arizona |
| 11 | Jack Toddy | 43 | Head | Labor | Arizona |
| 12 | John Stevens Toddy | 70 | Lodger | — | Arizona |
| 14 | W. G. Buchanan | 62 | Head | Shoe Maker | Illinois |
| 15 | Louisa G. Buchanan | 67 | Wife | — | Texas |
| 16 | Bert Black | 38 | Head | Manager | Arizona |
| 17 | Leah Black | 32 | wife | Manager | California |
| 18 | Bert Jr. Black | 15 | son | — | Arizona |
| 19 | Margaret Ann Black | 10 | daughter | — | Arizona |
| 20 | Janet Black | 5 | daughter | — | Arizona |
| 21 | Peter Valazza | 56 | Head | — | Italy |
| 22 | Claudina Valazza | 53 | wife | — | Italy |
| 23 | Tony Stadleman | 27 | Head | Carpenter | Arizona |
| 24 | Georgia Stadleman | 20 | wife | — | Arizona |
| 25 | Emil Stadleman | 64 | Head | — | Switzerland |
| 26 | Mary Stadleman | 58 | Wife | — | Switzerland |
| 27 | Joe Stadleman | 18 | son | — | Arizona |
| 28 | Ezequiel Heredia | 50 | Head | Milk Man | Mexico |
| 29 | Sara Heredia | 54 | wife | — | Mexico |
| 30 | Luis Martinez | 49 | Head | Roaster | Mexico |
| 31 | Guadalupe M. Martinez | 29 | wife | — | Arizona |
| 32 | Mary Louisa Martinez THIS PERSON | 15 | daughter | — | Arizona |
| 33 | Ellen Martinez | 14 | daughter | — | Arizona |
| 34 | Pascual Martinez | 12 | son | — | Arizona |
| 35 | Asencion Martinez | 10 | son | — | Arizona |
| 36 | Doris Martinez | 9 | daughter | — | Arizona |
| 37 | Walter Martinez | 7 | son | — | Arizona |
| 38 | Pauline Martinez | 6 | daughter | — | Arizona |
| 39 | Virginia Martinez | 4 | daughter | — | Arizona |
| 40 | Josephine Martinez | 3 | daughter | — | Arizona |
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)