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Juan Martinez — 1930 US Census Record
Model Tree available1930 United States Federal Census · Alamosa, Colorado
Our Model Tree links this Juan Martinez across the 1900, 1910, 1920 and 1930 US Censuses in Alamosa, Colorado (XGBoost, ~Confirmed), with identified parents Diego & Antonio — first a head (b.~1899), then head of a 4-person household.
Age 31
b. ~1899
Male
Head
Born: Colorado
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Alamosa, Colorado |
| Surname | Martinez |
| Given Name | Juan |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 21 |
| Father's Birthplace | Colorado |
| Mother's Birthplace | New Mexico |
| Additional Details | |
| Occupation | Deliveryman |
| Industry | Coal Shed |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 300 |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Deliveryman |
| Township / Ward | Washington Addition |
| Est. Birth Year | ~1899 |
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 1930 census.
| Name | Relation to head | Relative to Juan | Age | Birth yr |
|---|---|---|---|---|
| Antonio Martinez | Son | — | 8 | ~1922 |
| Madeline Martinez | Spouse | — | 25 | ~1905 |
| Benita Martinez | Daughter | — | 2 | ~1928 |
| Juan Martinez | Head | — | 31 | ~1899 |
Census Appearances
1900
Union, New …
Son, age 6
Union, New Mexico · implied b. ~1894 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Juan B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Colorado |
| Birth Month | June |
| Birth Year | 1894 |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Occupation | Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1910
Union, New …
Son, age 12
Union, New Mexico · implied b. ~1898 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Juan |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Occupation | Herder |
| Industry | Goat Ranch |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1920
Alamosa, Colorado
Son, age 21
Alamosa, Colorado · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Juan |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Spanish |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Alamosa, Colorado
Head, age 31
Alamosa, Colorado · implied b. ~1899 — 4 household members
| Surname | Martinez |
| Given Name | Juan |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 21 |
| Father's Birthplace | Colorado |
| Mother's Birthplace | New Mexico |
| Occupation | Deliveryman |
| Industry | Coal Shed |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 300 |
| 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 (1900, 1910, 1920 and 1930) in 2 locations, using XGBoost record linkage. Identified parents: father Diego Martinez (~0.92 confidence) and father Antonio Martinez (~0.92 confidence) and mother Delia Martinez (~0.92 confidence) and mother Ignacia Martinez (~0.92 confidence) and father Juan Martinez (~0.92 confidence) and mother Juanita Martinez (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Diego Martinez
b. ~1840
Source father
● Household
· direct · ~0.92
Father
Antonio Martinez
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Delia Martinez
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Ignacia Martinez
b. ~1873
Source mother
● Household
· direct · ~0.92
Father
Juan Martinez
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Juanita Martinez
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Juan Martinez
Head · 1930 · age 31 · b. ~1899 · Colorado
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Alamosa, Colorado
Open full size
1930 US Federal Census — Alamosa, Colorado
Page Contents
50 people indexed on this census page (ia:1930:15thcensus229unit:0731)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lucrecia Alarid | 58 | Head | Laundress | New Mexico |
| 2 | D. H. Quick | 31 | Head | Carman | Nebraska |
| 3 | Florence Quick | 22 | Wife | — | Minnesota |
| 4 | Helen Quick | 4 | Daughter | — | Colorado |
| 5 | Charlene Quick | 2 | Daughter | — | Colorado |
| 6 | Helena Lobato | 39 | Head | Housework | Colorado |
| 7 | Estefanita Lobato | 16 | Daughter | — | Colorado |
| 8 | Francisco Garcia | 60 | Head | — | New Mexico |
| 9 | Abel Garcia | 30 | Son-in-law | Labor | New Mexico |
| 10 | Manuelita Garcia | 25 | Daughter | — | New Mexico |
| 11 | Francisca Garcia | 5 | Granddaughter | — | Colorado |
| 12 | Alfonso Garcia | 3 | Grandson | — | Colorado |
| 13 | Eloy Garcia | 1 | Grandson | — | Colorado |
| 14 | Sofia Rampa | 30 | Head | Retail Salesman | Colorado |
| 15 | Celesta Rampa | 26 | Wife | — | Colorado |
| 16 | Daisy Rampa | 9 | Daughter | — | Colorado |
| 17 | Cora Rampa | 8 | Daughter | — | Colorado |
| 18 | Alice Rampa | 7 | Daughter | — | Colorado |
| 19 | Jennie Rampa | 5 | Daughter | — | Colorado |
| 20 | Juan Martinez THIS PERSON | 31 | Head | Deliveryman | Colorado |
| 21 | Madeline Martinez | 25 | Wife | — | New Mexico |
| 22 | Antonio Martinez | 8 | Son | — | Colorado |
| 23 | Benita Martinez | 2 | Daughter | — | Colorado |
| 24 | Lucas Romero | 30 | Head | Repair Carman | Colorado |
| 25 | Ramona Romero | 24 | Wife | — | Colorado |
| 26 | Elizabeth Romero | 5 | Daughter | — | Colorado |
| 27 | Eligio Trujillo | 70 | Head | — | New Mexico |
| 28 | Fidel Martinez | 39 | Head | Farm Laborer | New Mexico |
| 29 | Madeline Martinez | 30 | Wife | — | New Mexico |
| 30 | Belarmino Martinez | 15 | Son | — | New Mexico |
| 31 | Julio De Herrera | 62 | Head | Farm Laborer | Colorado |
| 32 | Nativida De Herrera | 47 | Wife | — | Colorado |
| 33 | Ben De Herrera | 16 | Son | Farm Laborer | Colorado |
| 34 | Juvencio De Herrera | 15 | Son | Farm Laborer | Colorado |
| 35 | Ionita De Herrera | 13 | Daughter | — | Colorado |
| 36 | Juan De Herrera | 12 | Son | — | Colorado |
| 37 | Fred De Herrera | 7 | Son | — | Colorado |
| 38 | Juan G. Martinez | 42 | Head | Sheep Shearer | New Mexico |
| 39 | Remocita Martinez | 23 | Wife | — | New Mexico |
| 40 | Euluvia Martinez | 5 | Daughter | — | Colorado |
| 41 | Valdemar Martinez | 4 | Son | — | Colorado |
| 42 | Adolfo A. Martinez | 2 | Son | — | Colorado |
| 43 | Adelayda Martinez | 0 | Daughter | — | Colorado |
| 44 | Jose T. Garcia | 54 | Father-in-law | Farm Laborer | New Mexico |
| 45 | Ymedio Garcia | 16 | Brother-in-law | Farm Laborer | New Mexico |
| 46 | Juan B. Cordova | 16 | Half Brother | Farm Laborer | New Mexico |
| 47 | Manuel Espinoza | 37 | Head | Labor | New Mexico |
| 48 | Maria Espinoza | 35 | Wife | — | New Mexico |
| 49 | Jose Nicasio Espinoza | 10 | Son | — | Colorado |
| 50 | Eulermenia Espinoza | 8 | Daughter | — | Colorado |
Pedigree Summary
Juan
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)