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Mary Martinez — 1930 US Census Record
Linked across censuses1930 United States Federal Census · None, None
Our Model Tree links this Mary Martinez across the 1920 and 1930 US Censuses (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 9-person household.
Age 12
b. ~1918
Female
Daughter
Born: Guam
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | None, None |
| Surname | Martinez |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Cha |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Guam |
| Father's Birthplace | Guam |
| Mother's Birthplace | Guam |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Guam |
| Birth Country | United States |
| Birthplace (normalized) | guam |
| Township / Ward | Agana San Antonio Dist |
| Est. Birth Year | ~1918 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Vicente Calvo | Other | — | 31 | ~1899 |
| Mary Martinez | Daughter | — | 12 | ~1918 |
| Salvador Martinez | Son | — | 7 | ~1923 |
| Gregorio Calvo | Other | — | 35 | ~1895 |
| Lourdes Martinez | Daughter | — | 15 | ~1915 |
| Ignacio Martinez | Son | — | 20 | ~1910 |
| Rosa Martinez | Spouse | — | 45 | ~1885 |
| Vicente Martinez | Head | — | 49 | ~1881 |
| Carmen Martinez | Daughter | — | 11 | ~1919 |
Census Appearances
1920
None, None
Daughter, age 1
None, None · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Mary R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Cha |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Guam |
| Father's Birthplace | Guam |
| Mother's Birthplace | Guam |
| Occupation | none |
| Birth State | Guam |
| Birth Country | United States |
| Birthplace (normalized) | guam |
1930
None, None
Daughter, age 12
None, None · implied b. ~1918 — 9 household members
| Surname | Martinez |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Cha |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Guam |
| Father's Birthplace | Guam |
| Mother's Birthplace | Guam |
| Can Read/Write | Yes |
| Birth State | Guam |
| Birth Country | United States |
| Birthplace (normalized) | guam |
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 (1920 and 1930) in None, None, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Martinez
Daughter · 1930 · age 12 · b. ~1918 · None
★ You are viewing this record
Sibling
Lourdes Martinez
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ignacio Martinez
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Salvador Martinez
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carmen Martinez
Sibling · 1930 · age 11
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
1930 US Federal Census — None, None
Open full size
1930 US Federal Census — None, None
Page Contents
25 people indexed on this census page (ia:1930:15thcensus2629unit:0973)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 26 | Jose Vera | 13 | Son | — | Guam |
| 27 | Francisco Vera | 10 | Son | — | Guam |
| 28 | Dolores Vera | 8 | Daughter | — | Guam |
| 29 | Victor Vera | 6 | Son | — | Guam |
| 30 | John Vera | 1 | Grandson | — | Guam |
| 31 | Atanacio T. Calvo | 56 | Head | Merchant | Guam |
| 32 | Felisa T. Calvo | 21 | Son | Clerk | Guam |
| 33 | Ricardo Velarde | 30 | Head | Shoemaker | Philippine Islands |
| 34 | Milagro C. Velarde | 20 | Wife | — | Guam |
| 35 | Ricardo C. Velarde | 5 | Son | — | Guam |
| 36 | Rafaela C. Velarde | 3 | Daughter | — | Guam |
| 37 | Evangeline C. Velarde | 1 | Daughter | — | Guam |
| 38 | Vicente G. Martinez | 49 | Head | Merchant | Guam |
| 39 | Rosa C. Martinez | 45 | Wife | — | Guam |
| 40 | Ignacio C. Martinez | 20 | Son | — | Guam |
| 41 | Lourdes C. Martinez | 15 | Daughter | — | Guam |
| 42 | Mary C. Martinez THIS PERSON | 12 | Daughter | — | Guam |
| 43 | Carmen M. Martinez | 11 | Daughter | — | Guam |
| 44 | Salvador C. Martinez | 7 | Son | — | Guam |
| 45 | Gregorio P. Calvo | 35 | Brother-in-law | Laborer | Guam |
| 46 | Vicente P. Calvo | 31 | Brother-in-law | Bookkeeper | Guam |
| 47 | Guillermo C. Sablan | 50 | Head | Farmer | Guam |
| 48 | Enrique C. Sablan | 22 | Son | Chauffeur | Guam |
| 49 | Galthano C. Sablan | 18 | Son | Music Teacher | Guam |
| 50 | Carmen C. Sablan | 16 | Daughter | — | Guam |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)