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Maria Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Indiana
Our Model Tree links this Maria Lopez across the 1930 and 1940 US Censuses in Lake-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 13-person household.
Age 12
b. ~1928
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Indiana |
| Surname | Lopez |
| Given Name | Maria |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | East Chicago |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | East Chicago |
| Est. Birth Year | ~1928 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Maria | Age | Birth yr |
|---|---|---|---|---|
| Alayandro Lopez | Son | — | 8 | ~1932 |
| Adolfo Lopez | Son | — | 2 | ~1938 |
| Phillip Lopez | Son | — | 4 | ~1936 |
| Parno Lopez | Son | — | 13 | ~1927 |
| Isabel Lopez | Daughter | — | 11 | ~1929 |
| Maria Lopez | Daughter | — | 12 | ~1928 |
| Marguerita Lopez | Daughter | — | 5 | ~1935 |
| Louise Lopez | Daughter | — | ~1940 | |
| Monica Lopez | Daughter | — | 3 | ~1937 |
| Gloria Lopez | Daughter | — | 5 | ~1935 |
| Asencion Lopez | Head | — | 40 | ~1900 |
| Jovita Lopez | Spouse | — | 33 | ~1907 |
| Asencion Lopez | Son | — | 11 | ~1929 |
Census Appearances
1930
Lake, Indiana
Daughter, age 2
Lake, Indiana · implied b. ~1928 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Maria D |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Mexican |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Mexico |
| Occupation | none |
| Can Read/Write | No |
| Mother Tongue | Spanish |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Lake-County, Indiana
Daughter, age 12
Lake-County, Indiana · implied b. ~1928 — 13 household members
| Surname | Lopez |
| Given Name | Maria |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | East Chicago |
| 1935 Residence (County) | Lake |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Lopez across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Maria Lopez
Daughter · 1940 · age 12 · b. ~1928 · Indiana
★ You are viewing this record
Sibling
Parno Lopez
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marguerita Lopez
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Adolfo Lopez
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gloria Lopez
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Lopez
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Monica Lopez
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phillip Lopez
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alayandro Lopez
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Asencion Lopez
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabel Lopez
Sibling · 1940 · 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
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-t0627-01064-00913)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Maria Arredondo | 4 | daughter | — | Indiana |
| 2 | Camila Arredondo | 2 | daughter | — | Indiana |
| 3 | Raymond Arredondo | 0 | son | — | Indiana |
| 4 | Asencion Lopez | 40 | head | Laborer | Mexico |
| 5 | Jovita Lopez | 33 | wife | — | Mexico |
| 6 | Parno Lopez | 13 | son | — | Indiana |
| 7 | Maria Lopez THIS PERSON | 12 | daughter | — | Indiana |
| 8 | Isabel Lopez | 11 | daughter | — | Indiana |
| 9 | Asencion Jr Lopez | 11 | son | — | Indiana |
| 10 | Alayandro Lopez | 8 | son | — | Indiana |
| 11 | Marguerita Lopez | 5 | daughter | — | Indiana |
| 12 | Gloria Lopez | 5 | daughter | — | Indiana |
| 13 | Phillip Lopez | 4 | son | — | Indiana |
| 14 | Monica Lopez | 3 | daughter | — | Indiana |
| 15 | Adolfo Lopez | 2 | son | — | Indiana |
| 16 | Louise Lopez | 0 | daughter | — | Indiana |
| 17 | Louis Segura | 41 | head | Laborer | Chile |
| 18 | Felipa Segura | 43 | wife | — | Mexico |
| 19 | Maria Segura | 29 | daughter | — | Mexico |
| 20 | Eduardo Hernandez | 38 | son in law | Mail Clerk | Mexico |
| 21 | Ralph Hernandez | 16 | grandson | — | Indiana |
| 22 | Jenny Hernandez | 14 | granddaughter | — | Colorado |
| 23 | Dionicio Corpus | 40 | lodger | Laborer | Mexico |
| 24 | Abraham Corpus | 15 | lodger | — | Indiana |
| 25 | Martin Butts Valdez | 30 | lodger | Store Clerk | Mexico |
| 26 | Jose Gomez | 28 | lodger | Distributor | Mexico |
| 27 | Felix Abrako | 40 | lodger | Shear Operator | Mexico |
| 28 | Vicente Reyes | 40 | head | Rooming House Proprietor | Mexico |
| 29 | Juan Arteaga | 37 | head | — | Mexico |
| 30 | Paul Trevino | 39 | lodger | Laborer | Mexico |
| 31 | Joe Garcia | 39 | lodger | Laborer | Mexico |
| 32 | Mariano Valdez | 52 | head | Waiter | Mexico |
| 33 | Mary Valdez | 48 | wife | — | Mexico |
| 34 | Consuelo Valdez | 7 | daughter | — | Illinois |
| 35 | Calletano Valdez | 38 | brother | Helper Manager | Mexico |
| 36 | Mary Poth | 64 | head | — | Hungary |
| 37 | Gabriel Poth | 39 | son | Car Store Foreman | Indiana |
| 38 | Ben Rousyke | 34 | head | Pipe Filler | Minnesota |
| 39 | Mary Rousyke | 23 | wife | — | Ohio |
| 40 | Rose Marie Rousyke | 3 | daughter | — | Indiana |
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)