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Mary Martinez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Conejos-County, Colorado
Our Model Tree links this Mary Martinez across the 1930 and 1940 US Censuses in Conejos-County, Colorado (XGBoost, ~Confirmed) — first a spouse (b.~1912), then head of a 6-person household.
Age 28
b. ~1912
Female
Spouse
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Conejos-County, Colorado |
| Surname | Martinez |
| Given Name | Mary O. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | La Jara town |
| 1935 Residence (County) | Conejos |
| Additional Details | |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | La Jara Town |
| Est. Birth Year | ~1912 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lea Martinez | Daughter | — | 11 | ~1929 |
| Mary Martinez | Spouse | — | 28 | ~1912 |
| Leo Martinez | Head | — | 38 | ~1902 |
| M Martinez | Daughter | — | ~1940 | |
| Mary Martinez | Daughter | — | 2 | ~1938 |
| Leo Martinez | Son | — | 9 | ~1931 |
Census Appearances
1930
Conejos, Colorado
Spouse, age 19
Conejos, Colorado · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Mexican |
| Age | 19 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 18 |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Conejos-County, Colorado
Spouse, age 28
Conejos-County, Colorado · implied b. ~1912 — 6 household members
| Surname | Martinez |
| Given Name | Mary O. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | La Jara town |
| 1935 Residence (County) | Conejos |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| 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
Spouse · 1940 · age 28 · b. ~1912 · Colorado
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Conejos-County, Colorado
Open full size
1940 US Federal Census — Conejos-County, Colorado
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-00458-00738)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rose Montoya | 11 | niece | — | Colorado |
| 2 | Luis Ortiz | 51 | head | Laborer | Colorado |
| 3 | Paul J. Bodley | 26 | head | Parts Man | Ohio |
| 4 | Winona Bodley | 24 | wife | — | Colorado |
| 5 | Dan F. Phillips | 23 | head | Assistant Manager | Colorado |
| 6 | Maxine Phillips | 20 | wife | — | Texas |
| 7 | Dennis Phillips | 0 | son | — | Colorado |
| 8 | Clarence Brown | 63 | head | Manager | Virginia |
| 9 | Lula Lucille Brown | 53 | wife | — | Maryland |
| 10 | Clark Mason | 60 | head | Barber | Minnesota |
| 11 | Amelia Mason | 54 | wife | — | Minnesota |
| 12 | Kenneth C. Mason | 16 | son | — | Colorado |
| 13 | Kenneth C. Murphy | 29 | head | Bookkeeper | Nebraska |
| 14 | O. Ruth Murphy | 27 | wife | Assistant Postmaster | Montana |
| 15 | Loretta Murphy | 6 | daughter | — | Colorado |
| 16 | Horace H. Kelburne | 40 | head | Barber | Illinois |
| 17 | Gwen O. Kelburne | 37 | wife | Teacher | Colorado |
| 18 | Mary Kelburne | 16 | daughter | Companion | Colorado |
| 19 | Wendall Kelburne | 15 | son | — | Colorado |
| 20 | Bessie Kelburne | 13 | daughter | — | Colorado |
| 21 | Doris Kelburne | 9 | daughter | — | Colorado |
| 22 | Alice Kelburne | 6 | daughter | — | Colorado |
| 23 | Leo Martinez | 38 | head | Car Salesman | Colorado |
| 24 | Mary O. Martinez THIS PERSON | 28 | wife | — | Colorado |
| 25 | Lea Martinez | 11 | daughter | — | Colorado |
| 26 | Leo Jr. Martinez | 9 | son | — | Colorado |
| 27 | Mary M. Martinez | 2 | daughter | — | Colorado |
| 28 | M. Lila Martinez | 0 | daughter | — | Colorado |
| 29 | Royal Hostetter | 30 | head | Filling Station Attendant | Colorado |
| 30 | Norma Hostetter | 22 | wife | — | Colorado |
| 31 | N. Franklin Hostetter | 5 | son | — | Colorado |
| 32 | Catherine L. Hostetter | 0 | daughter | — | Colorado |
| 33 | A. F. Mccarroll | 42 | head | Manager | Iowa |
| 34 | Alice Mccarroll | 32 | wife | — | Colorado |
| 35 | Richard Mccarroll | 11 | son | — | Colorado |
| 36 | Robert Mccarroll | 9 | son | — | 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)