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Mary Martinez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Milwaukee-County, Wisconsin
Our Model Tree links this Mary Martinez across the 1930 and 1940 US Censuses in Milwaukee-County, Wisconsin (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Milwaukee-County, Wisconsin |
| Surname | Martinez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Milwaukee |
| 1935 Residence (County) | Milwaukee |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Milwaukee |
| Est. Birth Year | ~1923 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| James Martinez | Son | — | 24 | ~1916 |
| Sam Martinez | Head | — | 54 | ~1886 |
| Frances Martinez | Spouse | — | 52 | ~1888 |
| Josephine Martinez | Daughter | — | 14 | ~1926 |
| Frances Martinez | Daughter | — | 16 | ~1924 |
| Mary Martinez | Daughter | — | 17 | ~1923 |
| Sarah Martinez | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Milwaukee, Wisconsin
Daughter, age 6
Milwaukee, Wisconsin · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martino |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Milwaukee-County, Wisconsin
Daughter, age 17
Milwaukee-County, Wisconsin · implied b. ~1923 — 7 household members
| Surname | Martinez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Milwaukee |
| 1935 Residence (County) | Milwaukee |
| Industry | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 17 · b. ~1923 · Wisconsin
★ You are viewing this record
Sibling
James Martinez
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Martinez
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Martinez
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Martinez
Sibling · 1940 · age 18
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 — Milwaukee-County, Wisconsin
Open full size
1940 US Federal Census — Milwaukee-County, Wisconsin
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04543-01091)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Juanita Loyos | 10 | Daughter | — | Wisconsin |
| 42 | Lupe Loyos | 8 | Daughter | — | Wisconsin |
| 43 | Joaquim Loyos | 6 | Son | — | Wisconsin |
| 44 | Anita Loyos | 4 | Daughter | — | Wisconsin |
| 45 | Joseph Loyos | 0 | Son | — | Wisconsin |
| 46 | Raymond Serrano | 36 | Head | Laborer | Mexico |
| 47 | Augustina Serrano | 32 | Wife | — | Mexico |
| 48 | Raymond Jr. Serrano | 14 | Son | — | Mexico |
| 49 | Vito Serrano | 12 | Son | — | Wisconsin |
| 50 | Paul Serrano | 10 | Son | — | Wisconsin |
| 51 | Guadalupe Serrano | 7 | Daughter | — | Wisconsin |
| 52 | Theresa Serrano | 6 | Daughter | — | Wisconsin |
| 53 | Anita Serrano | 4 | Daughter | — | Wisconsin |
| 55 | Joseph Mendez | 39 | Head | Laborer | Mexico |
| 56 | Casas Calvo | 57 | Lodger | Laborer | Mexico |
| 57 | Louis Carrillo | 32 | Lodger | Laborer | Mexico |
| 58 | John Denicola | 42 | Head | Presser | Italy |
| 59 | Sam Martinez | 54 | Head | — | Italy |
| 60 | Frances Martinez | 52 | Wife | — | Italy |
| 61 | James Martinez | 24 | Son | New Worker | Wisconsin |
| 62 | Sarah Martinez | 18 | Daughter | New Worker | Wisconsin |
| 63 | Mary Martinez THIS PERSON | 17 | Daughter | — | Wisconsin |
| 64 | Frances Martinez | 16 | Daughter | — | Wisconsin |
| 65 | Josephine Martinez | 14 | Daughter | — | Wisconsin |
| 66 | Peter Garcia | 46 | Head | Laborer | Mexico |
| 67 | Andrea Garcia | 48 | Wife | — | Mexico |
| 68 | Leo Garcia | 18 | Son | — | Mexico |
| 69 | Raymond Lis | 70 | Head | — | Mexico |
| 70 | Martina Lis | 60 | Wife | — | Mexico |
| 71 | John Sinfelice | 73 | Head | — | Italy |
| 72 | Mary Sinfelice | 64 | Wife | — | Italy |
| 73 | Mary Rose Sinfelice | 14 | Daughter | — | Wisconsin |
| 74 | Carlo Tarantino | 53 | Head | Laborer | Italy |
| 75 | Connie Tarantino | 27 | Wife | — | Wisconsin |
| 76 | Nick Tarantino | 10 | Son | — | Wisconsin |
| 77 | Anna Tarantino | 9 | Daughter | — | Wisconsin |
| 78 | Rose Tarantino | 6 | Daughter | — | Wisconsin |
| 79 | Lawrence Tarantino | 0 | Son | — | Wisconsin |
| 80 | Sam Carlo | 20 | Son | New Worker | Wisconsin |
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)