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Mary Martinez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Las-Animas-County, Colorado
Our Model Tree links this Mary Martinez across the 1930 and 1940 US Censuses in Las-Animas-County, Colorado (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Las-Animas-County, Colorado |
| Surname | Martinez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Las Animas |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Trinidad City |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Pablo Martinez | Son | — | 11 | ~1929 |
| Ernest Martinez | Son | — | 18 | ~1922 |
| Marfencia Martinez | Daughter | — | 5 | ~1935 |
| Herminia Martinez | Son | — | 16 | ~1924 |
| Mary Martinez | Daughter | — | 14 | ~1926 |
| Annie Martinez | Daughter | — | 20 | ~1920 |
| Theresa Martinez | Spouse | — | 38 | ~1902 |
| Pablo Martinez | Head | — | 40 | ~1900 |
| Trinidad Martinez | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Las Animas, …
Daughter, age 3
Las Animas, Colorado · implied b. ~1927
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Martinez |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Birthplace | Colorado |
| Father's Birthplace | New Mexico |
| Mother's Birthplace | New Mexico |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Las-Animas-County, Colorado
Daughter, age 14
Las-Animas-County, Colorado · implied b. ~1926 — 9 household members
| Surname | Martinez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Las Animas |
| Industry | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 14 · b. ~1926 · Colorado
★ You are viewing this record
Sibling
Ernest Martinez
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Martinez
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marfencia Martinez
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pablo Martinez
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Trinidad Martinez
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herminia Martinez
Sibling · 1940 · age 16
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 — Las-Animas-County, Colorado
Open full size
1940 US Federal Census — Las-Animas-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00468-00620)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur L. Ames | 58 | Head | Installing Man | Kansas |
| 2 | Sarah B. Ames | 37 | Wife | — | Colorado |
| 3 | John C. Ward | 42 | Head | Interior Painter | Tennessee |
| 4 | Cora R. Ward | 39 | Wife | — | Tennessee |
| 5 | Clyde R. Ward | 18 | Son | Helper Father | Tennessee |
| 6 | Doyle Ward | 17 | Son | — | Tennessee |
| 7 | June Ruth Ward | 15 | Daughter | — | Tennessee |
| 8 | George Kenneth Ward | 12 | Son | — | Kentucky |
| 9 | Kendrick Howard Ward | 9 | Son | — | Colorado |
| 10 | Ross Pappas | 55 | Head | Laborer | Hungary |
| 11 | Virginia Pappas | 18 | Daughter | Housework | Colorado |
| 12 | Alice Pappas | 15 | Daughter | — | Colorado |
| 13 | Pablo Martinez | 40 | Head | — | New Mexico |
| 14 | Theresa C. Martinez | 38 | Wife | — | Colorado |
| 15 | Annie Martinez | 20 | Daughter | — | Colorado |
| 16 | Ernest Martinez | 18 | Son | C.C.C. Clerk | Colorado |
| 17 | Herminia Martinez | 16 | Son | — | Colorado |
| 18 | Mary Martinez THIS PERSON | 14 | Daughter | — | Colorado |
| 19 | Trinidad Martinez | 13 | Daughter | — | Colorado |
| 20 | Pablo Jr. Martinez | 11 | Son | — | Colorado |
| 21 | Marfencia Martinez | 5 | Daughter | — | Colorado |
| 22 | John Reed | 43 | Head | — | Illinois |
| 23 | Martha Reed | 36 | Wife | — | Maryland |
| 24 | Harry Reed | 19 | Son | Laborer | Colorado |
| 25 | Helen Reed | 17 | Daughter | — | Colorado |
| 26 | John Reed | 15 | Son | — | Colorado |
| 27 | Paul Reed | 13 | Son | — | Colorado |
| 28 | Maxine Reed | 10 | Daughter | — | Colorado |
| 29 | Arline Reed | 8 | Daughter | — | Colorado |
| 30 | Clarence Reed | 2 | Daughter | — | Colorado |
| 31 | Victor W. Stamps | 68 | Head | Clerical Work | Illinois |
| 32 | Stella M. Stamps | 63 | Wife | — | Illinois |
| 33 | Dominic Cimino | 65 | Head | — | Italy |
| 34 | Mary Cimino | 53 | Wife | — | Louisiana |
| 35 | Thomas Cimino | 25 | Son | Car Laborer | Colorado |
| 36 | Frank Cimino | 23 | Son | Attendant | Colorado |
| 37 | Sarah Cimino | 21 | Daughter | — | Colorado |
| 38 | Carmel Cimino | 19 | Son | Attendant | New Mexico |
| 39 | Sarah Cimino | 16 | Daughter | — | Colorado |
| 40 | Sena Cimino | 12 | Daughter | — | Colorado |
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)