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Mary Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Mary Lopez across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 11-person household.
Age 21
b. ~1919
Female
Daughter
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Lopez |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Bell City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Sales girl |
| Industry | Dept. Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 298 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Occupation | Sales Girl |
| Township / Ward | Bell City |
| Est. Birth Year | ~1919 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eva Lopez | Daughter | — | 17 | ~1923 |
| Julia Lopez | Daughter | — | 8 | ~1932 |
| Lola Lopez | Daughter | — | 15 | ~1925 |
| Miriadel Lopez | Head | — | 51 | ~1889 |
| Edmond Lopez | Son | — | 24 | ~1916 |
| Enadina Lopez | Daughter | — | 19 | ~1921 |
| Ernest Lopez | Son | — | 16 | ~1924 |
| Joseph Lopez | Son | — | 7 | ~1933 |
| Evangelina Lopez | Daughter | — | 13 | ~1927 |
| Benjamine Lopez | Son | — | 12 | ~1928 |
| Mary Lopez | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Los Angeles, …
Daughter, age 11
Los Angeles, California · implied b. ~1919 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Marylouise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Mexican |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Mexico |
| Can Read/Write | Yes |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Los-Angeles-County, California
Daughter, age 21
Los-Angeles-County, California · implied b. ~1919 — 11 household members
| Surname | Lopez |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | Bell City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Sales girl |
| Industry | Dept. Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 298 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 Lopez across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lopez
Daughter · 1940 · age 21 · b. ~1919 · California
★ You are viewing this record
Sibling
Lola Lopez
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Lopez
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Lopez
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edmond Lopez
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Enadina Lopez
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Benjamine Lopez
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evangelina Lopez
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernest Lopez
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Lopez
Sibling · 1940 · age 17
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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00245-00132)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Wesley De Pue | 17 | Son | — | California |
| 42 | Jeanne Ruth De Pue | 8 | Daughter | — | California |
| 43 | Jane Wade | 68 | Head | Janitress | Utah |
| 44 | Howard Lund | 26 | Son | Car Man | California |
| 45 | Mary Jane Lund | 22 | Daughter-in-law | Stenographer | California |
| 46 | John Richard Lund | 5 | Grandson | — | California |
| 47 | James Parker | 68 | Brother | — | Utah |
| 48 | William Mallison | 47 | Head | Roofer | Utah |
| 49 | Laura Mae Mallison | 41 | Wife | Clerk | Arizona |
| 50 | Alene Mallison | 11 | Daughter | — | California |
| 51 | Frank Strehle | 28 | Head | Brewer | Idaho |
| 52 | Alene Strehle | 25 | Wife | — | California |
| 53 | John A. Strehle | 3 | Son | — | California |
| 54 | Miriadel Valle Lopez | 51 | Head | — | Mexico |
| 55 | Edmond Lopez | 24 | Son | Electrician | Mexico |
| 56 | Mary Louise Lopez THIS PERSON | 21 | Daughter | Sales Girl | Texas |
| 57 | Enadina Lopez | 19 | Daughter | — | Texas |
| 58 | Eva Lopez | 17 | Daughter | — | Mexico |
| 59 | Ernest Lopez | 16 | Son | — | Mexico |
| 60 | Lola Lopez | 15 | Daughter | — | Mexico |
| 61 | Evangelina Lopez | 13 | Daughter | — | California |
| 62 | Benjamine Lopez | 12 | Son | — | California |
| 63 | Julia Lopez | 8 | Daughter | — | California |
| 64 | Joseph Manuel Lopez | 7 | Son | — | California |
| 65 | Walter R. Gallan | 62 | Head | Manager & Barber | Iowa |
| 66 | Selma Gallan | 58 | Wife | — | Nebraska |
| 67 | Lulu Scheerbaum | 34 | Housekeeper | Housekeeper | Missouri |
| 68 | Herbert M. Frusher | 33 | Head | Truck Driver | Iowa |
| 69 | Francis Frusher | 23 | Wife | — | Arkansas |
| 70 | Richard Frusher | 4 | Son | — | California |
| 71 | Lee C. Frusher | 3 | Son | — | California |
| 72 | Harold Woodruff | 23 | Head | Factory Help | California |
| 73 | Mary L. Woodruff | 22 | Wife | — | Idaho |
| 74 | Marvin Woodruff | 0 | Son | — | California |
| 75 | Fred W. Cassady | 63 | Head | Plumber | California |
| 76 | Myrtle M. Cassady | 62 | Wife | — | Kansas |
| 77 | John Hulin | 24 | Roomer | Mill Hand | Missouri |
| 78 | Howard Marshal | 24 | Lodger | Steel Worker | Texas |
| 79 | Alec Huntley | 34 | Head | Clerical | California |
| 80 | Douglas Huntley | 9 | Son | — | California |
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)