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Juan Martinez — 1940 US Census Record
Model Tree available1940 United States Federal Census · Huerfano-County, Colorado
Our Model Tree links this Juan Martinez across the 1910, 1920, 1930 and 1940 US Censuses in Huerfano-County, Colorado (XGBoost, ~Confirmed), with identified parents Daniel & Francidita — first a head (b.~1898), then head of a 7-person household.
Age 42
b. ~1898
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Huerfano-County, Colorado |
| Surname | Martinez |
| Given Name | Juan |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Del Carbon |
| 1935 Residence (County) | Huerfano |
| Additional Details | |
| Occupation | Own farm |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 1100 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Own Farm |
| Township / Ward | Del Carbon |
| Est. Birth Year | ~1898 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Juan | Age | Birth yr |
|---|---|---|---|---|
| Isabelita Martinez | Other | — | 72 | ~1868 |
| Frank Martinez | Son | — | 20 | ~1920 |
| Rachel Martinez | Daughter | — | 9 | ~1931 |
| Stella Martinez | Daughter | — | 12 | ~1928 |
| Martha Martinez | Spouse | — | 44 | ~1896 |
| Juan Martinez | Head | — | 42 | ~1898 |
| Helen Martinez | Daughter | — | 13 | ~1927 |
Census Appearances
1910
Huerfano, Colorado
Son, age 10
Huerfano, Colorado · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Juan |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | New Mexico |
| Mother's Birthplace | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1920
Huerfano, Colorado
Head, age 21
Huerfano, Colorado · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Juan |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Occupation | Farmer |
| Industry | Home Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Huerfano, Colorado
Head, age 32
Huerfano, Colorado · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Juan A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 19 |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Huerfano-County, Colorado
Head, age 42
Huerfano-County, Colorado · implied b. ~1898 — 7 household members
| Surname | Martinez |
| Given Name | Juan |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Del Carbon |
| 1935 Residence (County) | Huerfano |
| Occupation | Own farm |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 1100 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Juan Martinez across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Daniel Martinez (~0.92 confidence) and mother Francidita Martinez (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Daniel Martinez
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Francidita Martinez
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Juan Martinez
Head · 1940 · age 42 · b. ~1898 · Colorado
★ 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 — Huerfano-County, Colorado
Open full size
1940 US Federal Census — Huerfano-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00464-00467)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rafael Martinez | 43 | Head | Manager | Colorado |
| 2 | Juan Martinez THIS PERSON | 42 | Head | Own Farm | Colorado |
| 3 | Martha Martinez | 44 | Wife | — | Colorado |
| 4 | Frank Martinez | 20 | Son | — | Colorado |
| 5 | Helen Martinez | 13 | Daughter | — | Colorado |
| 6 | Stella Martinez | 12 | Daughter | — | Colorado |
| 7 | Rachel Martinez | 9 | Daughter | — | Colorado |
| 8 | Isabelita Martinez | 72 | Grandmother | — | Colorado |
| 9 | John Mallon | 48 | Head | Manager | Colorado |
| 10 | Josephine Mallon | 54 | Wife | — | Colorado |
| 11 | Ellen Beck | 55 | Mother-in-law | — | Colorado |
| 12 | Pete Medina | 64 | Head | — | Italy |
| 13 | Jennie Medina | 63 | Wife | — | Italy |
| 14 | Sam Medina | 22 | Son | Assayer | Colorado |
| 15 | Buzzi Pharley | 62 | Head | — | Italy |
| 16 | Angeline Pharley | 51 | Wife | — | Italy |
| 17 | Fred Pharley | 29 | Son | Miner | Montana |
| 18 | Pauline Pharley | 22 | Daughter | Housekeeper | New Mexico |
| 19 | Margaret Pharley | 19 | Daughter | — | Colorado |
| 20 | Joe Pharley | 17 | Son | — | Colorado |
| 21 | Silvia Pharley | 15 | Son | — | Colorado |
| 22 | Agnes Pharley | 10 | Daughter | — | Colorado |
| 23 | Louis Ludvik | 48 | Head | Miner | Italy |
| 24 | Jennie Ludvik | 36 | Wife | — | Germany |
| 25 | Louis Jr Ludvik | 16 | Son | — | Colorado |
| 26 | Jim Ludvik | 13 | Son | — | Colorado |
| 27 | Laman Ludvik | 11 | Son | — | Colorado |
| 28 | Carl Ludvik | 6 | Son | — | Colorado |
| 29 | Richard Ludvik | 0 | Infant | — | Colorado |
| 30 | John Mish | 64 | Head | Miner | Scotland |
| 31 | Mary Mish | 53 | Wife | — | England |
| 32 | Alfredo Pocetti | 58 | Head | Miner | Italy |
| 33 | Marizia Pocetti | 59 | Wife | — | Italy |
| 34 | Mary Pocetti | 22 | Daughter | — | Colorado |
| 35 | Josephine Pocetti | 18 | Daughter | — | Colorado |
| 36 | James Watson | 52 | Head | Miner | England |
| 37 | Janet Watson | 43 | Wife | — | Scotland |
| 38 | Leo Eatis | 52 | Head | Miner | Scotland |
| 39 | George Eatis | 21 | Son | Miner | Scotland |
| 40 | James Eatis | 20 | Son | — | Colorado |
Pedigree Summary
Juan
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)