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Mary Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Fresno-County, California
Our Model Tree links this Mary Lopez across the 1930 and 1940 US Censuses in Fresno-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Fresno-County, California |
| Surname | Lopez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Township 3 |
| 1935 Residence (County) | Fresno |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Township 3 |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Tony Lopez | Head | — | 48 | ~1892 |
| Mike Lopez | Son | — | 14 | ~1926 |
| Carmilla Lopez | Daughter | — | 16 | ~1924 |
| Lola Lopez | Daughter | — | 5 | ~1935 |
| Antoinette Lopez | Daughter | — | 1 | ~1939 |
| Manuel Lopez | Son | — | 7 | ~1933 |
| Pura Lopez | Spouse | — | 25 | ~1915 |
| Frances Lopez | Daughter | — | 11 | ~1929 |
| Pete Lopez | Son | — | 3 | ~1937 |
| Mary Lopez | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Fresno, California
Daughter, age 2
Fresno, California · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Spain |
| Mother's Birthplace | Spain |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Fresno-County, California
Daughter, age 12
Fresno-County, California · implied b. ~1928 — 10 household members
| Surname | Lopez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Township 3 |
| 1935 Residence (County) | Fresno |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 12 · b. ~1928 · California
★ You are viewing this record
Sibling
Mike Lopez
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Manuel Lopez
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lola Lopez
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Lopez
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carmilla Lopez
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pete Lopez
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Antoinette Lopez
Sibling · 1940 · age 1
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 — Fresno-County, California
Open full size
1940 US Federal Census — Fresno-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00202-00512)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Christine Fedrini | 16 | Daughter | — | California |
| 2 | Salvatore Stanggi | 52 | Head | Farmer | Italy |
| 3 | Mary B. Stanggi | 51 | Wife | — | Italy |
| 4 | Carmilla Stanggi | 22 | Daughter | — | California |
| 5 | A. C. Vaccaro | 59 | Head | Farmer | Italy |
| 6 | Brigida Vaccaro | 59 | Wife | — | Italy |
| 7 | Emil Cima | 70 | Head | Farmer | Italy |
| 8 | Dominica Cima | 70 | Wife | — | Italy |
| 9 | F. A. Haverty | 57 | Head | Carpenter | Iowa |
| 10 | Barbara Haverty | 17 | Daughter | — | California |
| 11 | Lillian Haverty | 15 | Daughter | — | California |
| 12 | Floyd Haverty | 12 | Son | — | California |
| 13 | Alex Hoffman | 33 | Head | Labour | Missouri |
| 14 | Angie Hoffman | 32 | Wife | — | Missouri |
| 15 | Harold Hoffman | 13 | Son | — | Oklahoma |
| 16 | Joseph Hoffman | 12 | Son | — | Oklahoma |
| 17 | Martha Hoffman | 2 | Daughter | — | Missouri |
| 18 | Lester Hoffman | 24 | Head | Labour | Missouri |
| 19 | Anna Hoffman | 18 | Wife | — | Oklahoma |
| 20 | Howard Harris | 57 | Head | Labour | Indiana |
| 21 | Martha Harris | 49 | Wife | — | Missouri |
| 22 | Ollie Adkins | 24 | Daughter | — | Oklahoma |
| 23 | Blay Harris | 10 | Son | — | Oklahoma |
| 24 | Dillie Harris | 14 | Daughter | — | Oklahoma |
| 25 | Betty Jean Adkins | 0 | Granddaughter | — | California |
| 26 | Tony Lopez | 48 | Head | Laborer | Spain |
| 27 | Pura Lopez | 25 | Wife | — | Spain |
| 28 | Carmilla Lopez | 16 | Daughter | — | California |
| 29 | Mike Lopez | 14 | Son | — | California |
| 30 | Mary Lopez THIS PERSON | 12 | Daughter | — | California |
| 31 | Frances Lopez | 11 | Daughter | — | California |
| 32 | Manuel Lopez | 7 | Son | — | California |
| 33 | Lola Lopez | 5 | Daughter | — | California |
| 34 | Pete Lopez | 3 | Son | — | California |
| 35 | Antoinette Lopez | 1 | Daughter | — | California |
| 36 | Orren Ayres | 27 | Head | Laborer | Oklahoma |
| 37 | Ruth Ayres | 25 | Wife | — | Oklahoma |
| 38 | Marvin Ayres | 4 | Son | — | California |
| 39 | Charleen Ayres | 2 | Daughter | — | California |
| 40 | Raymond Ayres | 25 | Brother | Farm Worker | Oklahoma |
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)