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Mary Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Labette-County, Kansas
Our Model Tree links this Mary Lopez across the 1930 and 1940 US Censuses in Labette-County, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Labette-County, Kansas |
| Surname | Lopez |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (County) | Labette |
| Additional Details | |
| Highest Grade | No 5 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Parsons |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eminia Lopez | Spouse | — | 45 | ~1895 |
| Louise Lopez | Daughter | — | 23 | ~1917 |
| Vincent Lopez | Son | — | 16 | ~1924 |
| Mary Lopez | Daughter | — | 12 | ~1928 |
| Matthew Lopez | Son | — | 10 | ~1930 |
| Frank Lopez | Son | — | 29 | ~1911 |
| Raymond Lopez | Son | — | 25 | ~1915 |
| Guadalupe Lopez | Son | — | 21 | ~1919 |
| Joe Lopez | Head | — | 40 | ~1900 |
Census Appearances
1930
Labette, Kansas
Daughter, age 2
Labette, Kansas · implied b. ~1928 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Mexican |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Can Read/Write | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Labette-County, Kansas
Daughter, age 12
Labette-County, Kansas · implied b. ~1928 — 9 household members
| Surname | Lopez |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (County) | Labette |
| Highest Grade | No 5 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 · Kansas
★ You are viewing this record
Sibling
Vincent Lopez
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Lopez
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Lopez
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Lopez
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Lopez
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Guadalupe Lopez
Sibling · 1940 · age 21
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 — Labette-County, Kansas
Open full size
1940 US Federal Census — Labette-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01239-00431)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Griggs | 4 | daughter | — | Kansas |
| 2 | Florence Griggs | 4 | daughter | — | Kansas |
| 3 | Earl Smith | 23 | Head | Auto Painter | Kansas |
| 4 | Mary Smith | 23 | wife | Egg Breaker | Nebraska |
| 5 | Dorothy Smith | 5 | daughter | — | Kansas |
| 6 | Harmon Pacy | 37 | Head | Laborer W.P.A | Missouri |
| 7 | Carry Pacy | 19 | wife | — | Kansas |
| 8 | Anna Pacy | 9 | daughter | — | Kansas |
| 9 | Hermon Pacy | 1 | Son | — | Kansas |
| 10 | Simon Cervantes | 55 | Head | Laborer | Mexico |
| 11 | Mary Cervantes | 54 | wife | — | Mexico |
| 12 | Joe Cervantes | 24 | Son | — | Mexico |
| 13 | Charles Cervantes | 21 | Son | — | Kansas |
| 14 | Frances Cervantes | 19 | daughter | — | Kansas |
| 15 | Frances Alvarez | 10 | niece | — | Kansas |
| 16 | Rose Marie Alvarez | 9 | niece | — | Kansas |
| 17 | Higins Mung | 57 | Head | Section Laborer | Mexico |
| 18 | Cripriana Mung | 57 | wife | — | Mexico |
| 19 | Wanetta Mung | 28 | daughter | — | Kansas |
| 20 | Lucille Mung | 15 | daughter | — | Mexico |
| 21 | Prudencio Mung | 29 | Son | Laborer | Mexico |
| 22 | Sarah Mung | 26 | daughter in law | — | Kansas |
| 23 | Meloria Mung | 8 | granddaughter | — | Kansas |
| 24 | Higins Mung | 4 | grandson | — | Kansas |
| 25 | Roy Hixon | 41 | Head | Laborer W.P.A | Kansas |
| 26 | Mary Hixon | 34 | wife | — | Kansas |
| 27 | Josephine Hixon | 4 | daughter | — | Kansas |
| 28 | Rose Mary Hixon | 2 | daughter | — | Kansas |
| 29 | Joe Lopez | 40 | Head | Laborer | Mexico |
| 30 | Eminia Lopez | 45 | wife | — | Mexico |
| 31 | Frank Lopez | 29 | Son | New Worker | Mexico |
| 32 | Raymond Lopez | 25 | Son | 3 | Kansas |
| 33 | Louise Lopez | 23 | daughter | 3 | Kansas |
| 34 | Guadalupe Lopez | 21 | Son | 3 | Kansas |
| 35 | Vincent Lopez | 16 | Son | — | Kansas |
| 36 | Mary Lopez THIS PERSON | 12 | daughter | — | Kansas |
| 37 | Matthew Lopez | 10 | Son | — | Kansas |
| 38 | Maude Robison | 56 | Head | — | Missouri |
| 39 | Choroder Robison | 17 | daughter | — | Kansas |
| 40 | Angelo J. Perez | 25 | Head | Plasterer | 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)