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Eugene Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this Eugene Martin across the 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Martin |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix City |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Township / Ward | Phoenix 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Eugene | Age | Birth yr |
|---|---|---|---|---|
| Elen Martin | Son | — | 7 | ~1933 |
| Henry Martin | Son | — | 8 | ~1932 |
| Nelia Martin | Daughter | — | 9 | ~1931 |
| Edward Martin | Son | — | 12 | ~1928 |
| Ernest Martin | Son | — | 11 | ~1929 |
| Eugene Martin | Son | — | 14 | ~1926 |
| Maria Martin | Head | — | 31 | ~1909 |
Census Appearances
1930
Maricopa, Arizona
Son, age 4
Maricopa, Arizona · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Eugenio |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Mexican |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Arizona |
| Mother's Birthplace | Mexico |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Maricopa-County, Arizona
Son, age 14
Maricopa-County, Arizona · implied b. ~1926 — 7 household members
| Surname | Martin |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix City |
| 1935 Residence (County) | Maricopa |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 Eugene Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Eugene Martin
Son · 1940 · age 14 · b. ~1926 · Arizona
★ You are viewing this record
Sibling
Ernest Martin
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Martin
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nelia Martin
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elen Martin
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Martin
Sibling · 1940 · age 12
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 — Maricopa-County, Arizona
Open full size
1940 US Federal Census — Maricopa-County, Arizona
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00104-00206)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Victoria Ramos | 27 | Head | — | Mexico |
| 2 | Arcelia Ramos | 11 | Daughter | — | Mexico |
| 3 | Lastines Ramos | 16 | Son | Dressmaker | California |
| 4 | Eva Ramos | 14 | Daughter | — | California |
| 5 | Gilbert Ramos | 8 | Son | — | Arizona |
| 6 | Norma Ramos | 5 | Daughter | — | Arizona |
| 7 | Cleofas Villalobos | 30 | Head | — | Mexico |
| 8 | Concepcion Villalobos | 26 | Wife | Tailor | Mexico |
| 9 | Eddie Villalobos | 7 | Son | — | Arizona |
| 10 | Sally Villalobos | 1 | Daughter | — | Arizona |
| 11 | Maria Martin | 31 | Head | — | Arizona |
| 12 | Eugene Martin THIS PERSON | 14 | Son | — | Arizona |
| 13 | Edward Martin | 12 | Son | — | Arizona |
| 14 | Ernest Martin | 11 | Son | — | Arizona |
| 15 | Nelia Martin | 9 | Daughter | — | Arizona |
| 16 | Henry Martin | 8 | Son | — | Arizona |
| 17 | Elen Martin | 7 | Son | — | Arizona |
| 18 | Elena Pina | 28 | Head | Housework | Arizona |
| 19 | Jesus Pina | 7 | Son | — | Arizona |
| 20 | Elena Pina | 6 | Daughter | — | Arizona |
| 21 | Maria Pina | 5 | Daughter | — | Arizona |
| 22 | Dolores Pina | 3 | Daughter | — | Arizona |
| 23 | Edward Corrales | 32 | Head | — | Arizona |
| 24 | Felia Corrales | 30 | Wife | Machine Operator | Mexico |
| 25 | Gloria Corrales | 9 | Daughter | — | Arizona |
| 26 | Armando Corrales | 7 | Son | — | Arizona |
| 27 | Julia Corrales | 3 | Daughter | — | Arizona |
| 28 | Monica Madrid | 50 | Head | — | Mexico |
| 29 | Saturnino Hinojosa | 32 | Son | Truck Driver | Arizona |
| 30 | Richard Hinojosa | 28 | Son | Laborer | Arizona |
| 31 | Gilbert Madrid | 20 | Son | Laborer | Arizona |
| 32 | Simon Madrid | 18 | Son | — | Arizona |
| 33 | Peter Madrid | 17 | Son | — | Arizona |
| 34 | Manuel Leyva | 32 | Head | New Worker | Mexico |
| 35 | Juana Leyva | 48 | Mother | Barber | Mexico |
| 36 | Robert Leyva | 19 | Brother | — | Mexico |
| 37 | Vicente Leyva | 16 | Brother | — | Mexico |
| 38 | Gertrude Leyva | 15 | Sister | — | Arizona |
| 39 | Dionicio Vargas | 40 | Head | — | 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)