MP
Maria Perez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Indiana
Our Model Tree links this Maria Perez across the 1920, 1930 and 1940 US Censuses in Lake-County, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 10-person household.
Age 46
b. ~1894
Female
Spouse
Born: Spain
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Indiana |
| Surname | Perez |
| Given Name | Maria |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Spain |
| 1935 Residence (City) | Gary City |
| 1935 Residence (County) | Lake |
| Naturalization Status | Alien |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth Country | Spain |
| Birthplace (normalized) | spain |
| Township / Ward | Gary City |
| Est. Birth Year | ~1894 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Maria | Age | Birth yr |
|---|---|---|---|---|
| Manuel Alvarez | Other | — | 7 | ~1933 |
| Manuel Alvarez | Other | — | 36 | ~1904 |
| Josephine Gonzalez | Daughter | — | 20 | ~1920 |
| William Gonzalez | Son | — | 24 | ~1916 |
| Celestino Perez | Head | — | 45 | ~1895 |
| Wildemina Alvarez | Daughter | — | 27 | ~1913 |
| Maria Alvarez | Other | — | 1 | ~1939 |
| Maria Perez | Spouse | — | 46 | ~1894 |
| Ronald Alvarez | Other | — | 5 | ~1935 |
| Ceasar Alvarez | Other | — | 18 | ~1922 |
Census Appearances
1920
Phila, Pennsylvania
Spouse, age 27
Phila, Pennsylvania · implied b. ~1893 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Perez |
| Given Name | Mercedes |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Spain |
| Year of Immigration | 1918 |
| Naturalization Status | Alien |
| Father's Birthplace | Spain |
| Mother's Birthplace | Spain |
| Occupation | Hat Maker |
| Industry | Hat Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Spanish |
| Birth Country | Spain |
| Birthplace (normalized) | spain |
1930
Lake, Indiana
Spouse, age 38
Lake, Indiana · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Perez |
| Given Name | Mercedes |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Spain |
| Naturalization Status | Naturalized |
| Year of Immigration | 1913 |
| Age at First Marriage | 24 |
| Father's Birthplace | Spain |
| Mother's Birthplace | Spain |
| Occupation | Clerk Retail |
| Industry | Grocery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Spanish |
| Veteran | No |
| Birth Country | Spain |
| Birthplace (normalized) | spain |
1940
Lake-County, Indiana
Spouse, age 46
Lake-County, Indiana · implied b. ~1894 — 10 household members
| Surname | Perez |
| Given Name | Maria |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Spain |
| 1935 Residence (City) | Gary City |
| 1935 Residence (County) | Lake |
| Naturalization Status | Alien |
| Class of Worker | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth Country | Spain |
| Birthplace (normalized) | spain |
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 Maria Perez across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Maria Perez
Spouse · 1940 · age 46 · b. ~1894 · Indiana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Lake-County, Indiana
Open full size
1940 US Federal Census — Lake-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01120-00868)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bertha Blair | 45 | Head | — | Arkansas |
| 2 | Alfred French | 23 | Son | Rail Finisher | Arkansas |
| 3 | Eugene Wesley | 5 | Son | — | Indiana |
| 4 | Ethel Smith | 28 | Daughter | — | Arkansas |
| 5 | James Smith | 35 | Son-in-law | Yard Laborer | Mississippi |
| 6 | Vasiley Hofanoff | 46 | Head | Hooker | Russia |
| 7 | Clarence Hall | 30 | Head | Laborer | Arkansas |
| 8 | Hazel Hall | 26 | Wife | — | Arkansas |
| 9 | Winipher Hall | 20 | Brother | — | Arkansas |
| 10 | Squire Mcguire | 48 | Head | Laborer | Kentucky |
| 11 | Lula M. Mcguire | 53 | Wife | — | Mississippi |
| 12 | Henry Jones | 42 | Head | Laborer | Missouri |
| 13 | Mollie Sanders | 58 | Lodger | Laborer | South Carolina |
| 14 | Metody Sarafine | 47 | Head | Laborer | Turkey |
| 15 | Rosie Sarafine | 48 | Wife | — | Turkey |
| 16 | Boris Sarafine | 18 | Son | — | Indiana |
| 17 | Mike Elliff | 44 | Lodger | Craneman | Turkey |
| 18 | Costing Elliff | 45 | Lodger | Craneman | Turkey |
| 19 | Anya Kozakewich | 54 | Head | — | Lithuania |
| 20 | Anthony Kozakewich | 24 | Son | Clerk | Illinois |
| 21 | Sidney Wyatt | 34 | Head | — | Mississippi |
| 22 | Avante Jones | 31 | Nephew | Craneman | Mississippi |
| 23 | Glennette Jones | 6 | Niece | — | Indiana |
| 24 | Mary Seats | 36 | Head | Dishwasher | Arkansas |
| 25 | Robert Allen | 44 | Lodger | Laborer | Mississippi |
| 26 | Clarence L. Paulk | 27 | Head | Hooker | Alabama |
| 27 | Nannie M. Paulk | 26 | Wife | — | Kentucky |
| 28 | Celestino Perez | 45 | Head | Laborer | Spain |
| 29 | Maria Perez THIS PERSON | 46 | Wife | — | Spain |
| 30 | William Gonzalez | 24 | Son | Laborer | Argentina |
| 31 | Josephine Gonzalez | 20 | Daughter | — | Indiana |
| 32 | Wildemina Alvarez | 27 | Daughter | — | Argentina |
| 33 | Manuel Alvarez | 36 | Son-in-law | Hammer Helper | Spain |
| 34 | Manuel Alvarez | 7 | Grandson | — | Indiana |
| 35 | Ronald Alvarez | 5 | Grandson | — | Indiana |
| 36 | Maria D. Alvarez | 1 | Granddaughter | — | Indiana |
| 37 | Ceasar Alvarez | 18 | Nephew | — | Cuba |
| 38 | Stanley Lavatiani | 35 | Head | Doubler | Mexico |
| 39 | Beatrice Lavatiani | 29 | Wife | — | Texas |
| 40 | Everett Campos | 35 | Lodger | Doubler | Mexico |
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)