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Mary Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pueblo-County, Colorado
Our Model Tree links this Mary Lopez across the 1930 and 1940 US Censuses in Pueblo-County, Colorado (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pueblo-County, Colorado |
| Surname | Lopez |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Pueblo City |
| 1935 Residence (County) | Pueblo |
| Additional Details | |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Pueblo City |
| Est. Birth Year | ~1924 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lopez | Daughter | — | 16 | ~1924 |
| Porfiria Lopez | Spouse | — | 44 | ~1896 |
| Joseph Lopez | Head | — | 48 | ~1892 |
| John Lopez | Son | — | 31 | ~1909 |
| Kathleen Lopez | Daughter | — | 11 | ~1929 |
| Santos Lopez | Son | — | 9 | ~1931 |
| Belen Lopez | Daughter | — | 17 | ~1923 |
| Marcelo Lopez | Son | — | 13 | ~1927 |
Census Appearances
1930
Pueblo, Colorado
Daughter, age 6
Pueblo, Colorado · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Mexican |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Mexico |
| Mother's Birthplace | Mexico |
| Occupation | none |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Pueblo-County, Colorado
Daughter, age 16
Pueblo-County, Colorado · implied b. ~1924 — 8 household members
| Surname | Lopez |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Pueblo City |
| 1935 Residence (County) | Pueblo |
| Hours Worked | 5 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 16 · b. ~1924 · Colorado
★ You are viewing this record
Sibling
Santos Lopez
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Lopez
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Belen Lopez
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marcelo Lopez
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lopez
Sibling · 1940 · age 31
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 — Pueblo-County, Colorado
Open full size
1940 US Federal Census — Pueblo-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00476-00391)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anthony Beuman | 25 | Head | Auto Mechanic | Mexico |
| 2 | Marie M. Beuman | 22 | Wife | — | New Mexico |
| 3 | Marina M. Beuman | 2 | Daughter | — | — |
| 4 | Adolph J. Beuman | 0 | Son | — | — |
| 5 | Nelson X. Johnson | 68 | Head | — | Sweden |
| 6 | Anita Johnson | 53 | Wife | — | New Mexico |
| 7 | Joseph Johnson | 18 | Son | Salesman | New Mexico |
| 8 | Paul Johnson | 17 | Son | Park Cleaner | New Mexico |
| 9 | Johnnie E. Johnson | 12 | Son | — | New Mexico |
| 10 | Lloyd C. Johnson | 10 | Son | — | New Mexico |
| 11 | Ruth Sanchez | 40 | Head | — | Mexico |
| 12 | Epifita Sanchez | 15 | Daughter | — | Colorado |
| 13 | Chotilda Sanchez | 14 | Daughter | — | Colorado |
| 14 | Angelita Sanchez | 9 | Daughter | — | Colorado |
| 15 | Carmen Sanchez | 8 | Daughter | — | Colorado |
| 16 | Juan X. Moreno | 54 | Head | Farm Labor | Mexico |
| 17 | Petra Moreno | 80 | Mother | — | Mexico |
| 18 | Joseph B. X. Lopez | 48 | Head | Farm Labor | Mexico |
| 19 | Porfiria M. Lopez | 44 | Wife | — | Mexico |
| 20 | John M. Lopez | 31 | Son | Farm Labor | Colorado |
| 21 | Belen M. Lopez | 17 | Daughter | — | Colorado |
| 22 | Mary M. Lopez THIS PERSON | 16 | Daughter | — | Colorado |
| 23 | Marcelo M. Lopez | 13 | Son | — | Colorado |
| 24 | Kathleen M. Lopez | 11 | Daughter | — | Colorado |
| 25 | Santos M. Lopez | 9 | Son | — | Colorado |
| 26 | David X. Luna | 50 | Head | Mill Helper | New Mexico |
| 27 | Balbina L. Luna | 44 | Wife | — | New Mexico |
| 28 | Leandro Luna | 16 | Son | Baker | Colorado |
| 29 | Ben Loie Luna | 14 | Son | — | Colorado |
| 30 | Richard J. Luna | 7 | Son | — | Colorado |
| 31 | Freddie G. Luna | 4 | Son | — | — |
| 32 | Lucerita Montoya | 79 | Head | — | New Mexico |
| 33 | Vacant | None | — | — | — |
| 34 | Vacant | None | — | — | — |
| 35 | Joseph Cabral | 49 | Head | Mill Labor | Mexico |
| 36 | Candelaria Cabral | 40 | Wife | — | Mexico |
| 37 | Nick Cabral | 20 | Son | Mill Labor | Colorado |
| 38 | Luke Cabral | 16 | Daughter | — | Colorado |
| 39 | Anita Cabral | 14 | Daughter | — | Colorado |
| 40 | Mary Frances Cabral | 12 | Daughter | — | Colorado |
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)