ML
Maria Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Midland-County, Texas
Our Model Tree links this Maria Lopez across the 1920, 1930 and 1940 US Censuses in Midland-County, Texas (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 4-person household.
Age 46
b. ~1894
Female
Spouse
Born: Old Mexico
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Midland-County, Texas |
| Surname | Lopez |
| Given Name | Maria Q. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Old Mexico |
| 1935 Residence (City) | Midland city |
| 1935 Residence (County) | Midland |
| Naturalization Status | Alien |
| Additional Details | |
| Industry | H |
| Income (1939) | 0 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birthplace (normalized) | old mexico |
| Township / Ward | Midland 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Maria | Age | Birth yr |
|---|---|---|---|---|
| Maria Lopez | Spouse | — | 46 | ~1894 |
| Felipe Lopez | Son | — | 8 | ~1932 |
| Alixandra Lopez | Daughter | — | 14 | ~1926 |
| James Lopez | Head | — | 53 | ~1887 |
Census Appearances
1920
Coconino, Arizona
Spouse, age 24
Coconino, Arizona · implied b. ~1896 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Manuela |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Mexican |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Old Mexico |
| Year of Immigration | 1915 |
| Naturalization Status | Alien |
| Father's Birthplace | Old Mexico |
| Mother's Birthplace | Old Mexico |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Spanish |
| Birthplace (normalized) | old mexico |
1930
Reeves, Texas
Spouse, age 36
Reeves, Texas · implied b. ~1894 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Manuela |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Mexican |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Old Mexico |
| Naturalization Status | Alien |
| Year of Immigration | 1920 |
| Age at First Marriage | 23 |
| Father's Birthplace | Old Mexico |
| Mother's Birthplace | Old Mexico |
| Can Read/Write | No |
| Mother Tongue | Spanish |
| Birthplace (normalized) | old mexico |
1940
Midland-County, Texas
Spouse, age 46
Midland-County, Texas · implied b. ~1894 — 4 household members
| Surname | Lopez |
| Given Name | Maria Q. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Old Mexico |
| 1935 Residence (City) | Midland city |
| 1935 Residence (County) | Midland |
| Naturalization Status | Alien |
| Industry | H |
| Income (1939) | 0 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birthplace (normalized) | old mexico |
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 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Maria Lopez
Spouse · 1940 · age 46 · b. ~1894 · Texas
★ 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 — Midland-County, Texas
Open full size
1940 US Federal Census — Midland-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04105-00191)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Domingo Lopez | 27 | Head | Yard Worker | Texas |
| 2 | Emilia Lopez | 21 | Wife | — | Texas |
| 3 | Mary Lopez | 2 | Daughter | — | Texas |
| 4 | Candelaria Lopez | 0 | Son | — | Texas |
| 5 | Oralia Lopez | 5 | Daughter | — | Texas |
| 6 | James Lopez | 53 | Head | Yard Worker | Old Mexico |
| 7 | Maria Q. Lopez THIS PERSON | 46 | Wife | — | Old Mexico |
| 8 | Alixandra Lopez | 14 | Daughter | New Worker | Texas |
| 9 | Felipe Lopez | 8 | Son | — | Texas |
| 10 | John Mendoza | 36 | Head | Pantry Man | Old Mexico |
| 11 | Lucy Mendoza | 28 | Wife | — | New Mexico |
| 12 | Mary Mendoza | 8 | Daughter | — | Texas |
| 13 | Buddie Mendoza | 5 | Son | — | Texas |
| 14 | Gloria Mendoza | 3 | Daughter | — | Texas |
| 15 | Luther M. Smith | 56 | Head | Attendant | Texas |
| 16 | Annie R. Smith | 46 | Wife | Seamstress | Texas |
| 17 | Thurman G. Adams | 30 | Head | Proprietor | New Mexico |
| 18 | Lois D. Adams | 30 | Wife | — | New Mexico |
| 19 | Arnold A. Adams | 10 | Son | — | New Mexico |
| 20 | Vance L. Adams | 9 | Son | — | Texas |
| 21 | Betty J. Adams | 7 | Daughter | — | Texas |
| 22 | Wanda L. Adams | 3 | Daughter | — | Texas |
| 23 | Ricardo Casarubias | 57 | Head | Laborer | Old Mexico |
| 24 | Andrew Casarubias | 36 | Son | Laborer | Texas |
| 25 | Augustin Orosco | 35 | Head | Laborer | Old Mexico |
| 26 | Maria Robledo | 65 | Mother | — | Old Mexico |
| 27 | Selma Smith | 42 | Head | Laundress | Texas |
| 28 | Freddie L. Smith | 18 | Son | Shine Boy | Texas |
| 29 | Willie C. Smith | 13 | Daughter | — | Texas |
| 30 | Maxine Smith | 9 | Daughter | — | Texas |
| 31 | George Diggs | 52 | Head | Dishwasher | Texas |
| 32 | Viola Diggs | 52 | Wife | Maid | Texas |
| 33 | Daisy B. Smith | 24 | Head | Janitor | Texas |
| 34 | Ada B. Reaks | 28 | Lodger | Maid | Texas |
| 35 | Juan Sanchez | 38 | Head | Yard Worker | Texas |
| 36 | Enedina Sanchez | 34 | Wife | — | Texas |
| 37 | Angelina Sanchez | 14 | Daughter | New Worker | Texas |
| 38 | Juanita Sanchez | 12 | Daughter | — | Texas |
| 39 | Fidel Sanchez | 12 | Son | — | Texas |
| 40 | Ernestine Sanchez | 10 | Daughter | — | Texas |
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)