AJ
Alvin Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Conejos-County, Colorado
Our Model Tree links this Alvin Johnson across the 1920, 1930 and 1940 US Censuses in Conejos-County, Colorado (XGBoost, ~Confirmed), with identified parents Dugger & Hugger — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Conejos-County, Colorado |
| Surname | Johnson |
| Given Name | Alvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | No |
| 1935 Residence (County) | Conejos |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 140 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Farm Laborer |
| Township / Ward | No |
| Est. Birth Year | ~1919 |
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 Alvin | Age | Birth yr |
|---|---|---|---|---|
| Eliza Johnson | Head | — | 58 | ~1882 |
| Alvin Johnson | Son | — | 21 | ~1919 |
| William Johnson | Son | — | 41 | ~1899 |
| Rudolph Johnson | Son | — | 34 | ~1906 |
| Melvin Johnson | Son | — | 31 | ~1909 |
| Mala Johnson | Daughter | — | 28 | ~1912 |
| Thomas Johnson | Son | — | 18 | ~1922 |
Census Appearances
1920
Rio Arriba, …
Son, age 1
Rio Arriba, New Mexico · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Colorado |
| Naturalization Status | Naturalized |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Virginia |
| Can Read | No |
| Speaks English | No |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Conejos, Colorado
Son, age 11
Conejos, Colorado · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alvin L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Conejos-County, Colorado
Son, age 21
Conejos-County, Colorado · implied b. ~1919 — 7 household members
| Surname | Johnson |
| Given Name | Alvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | No |
| 1935 Residence (County) | Conejos |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 140 |
| 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 Alvin Johnson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Dugger Johnson (~0.92 confidence) and father Hugger Johnson (~0.92 confidence) and mother Eliza Johnson (~0.92 confidence) and mother Eliza Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Dugger Johnson
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Hugger Johnson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Eliza Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Eliza Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alvin Johnson
Son · 1940 · age 21 · b. ~1919 · Colorado
★ You are viewing this record
Sibling
Melvin Johnson
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Johnson
Sibling · 1940 · age 41
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mala Johnson
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rudolph Johnson
Sibling · 1940 · age 34
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 — Conejos-County, Colorado
Open full size
1940 US Federal Census — Conejos-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00458-00838)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Linda B. Coombs | 27 | Wife | — | Colorado |
| 42 | Kathleen Coombs | 4 | Daughter | — | — |
| 43 | Daniel Coombs | 3 | Son | — | — |
| 44 | Curtis Coombs | 2 | Son | — | — |
| 45 | Ivan M. Thomas | 25 | Head | Farmer | Colorado |
| 46 | Mildred Thomas | 26 | Wife | — | Colorado |
| 47 | Marilyn Thomas | 3 | Daughter | — | — |
| 48 | Elaine Thomas | 1 | Daughter | — | — |
| 49 | John Campbell | 64 | Head | — | Virginia |
| 50 | Eliza B. Johnson | 58 | Head | Farmer | Virginia |
| 51 | William H. Johnson | 41 | Son | Farm Laborer | Colorado |
| 52 | Rudolph D. Johnson | 34 | Son | Farm Laborer | Colorado |
| 53 | Melvin Johnson | 31 | Son | Miner | Colorado |
| 54 | Mala Johnson | 28 | Daughter | Servant | Colorado |
| 55 | Alvin Johnson THIS PERSON | 21 | Son | Farm Laborer | Colorado |
| 56 | Thomas Johnson | 18 | Son | — | Colorado |
| 57 | Marcial Camps | 60 | Head | Farmer | North Carolina |
| 58 | Mattie Camps | 59 | Wife | — | Colorado |
| 59 | Brother Williams | 47 | Brother | Farm Laborer | Colorado |
| 60 | Alford William Willison | 26 | Head | Truck Driver | Colorado |
| 61 | Marjorie Willison | 23 | Wife | — | Colorado |
| 62 | Le Ann Willison | 5 | Daughter | — | — |
| 63 | Jana Lou Willison | 3 | Daughter | — | — |
| 64 | Philis Willison | 1 | Daughter | — | — |
| 65 | Dale Doolin | 36 | Head | Farmer | Missouri |
| 66 | Lulu Bessie Doolin | 30 | Wife | — | Colorado |
| 67 | Elaine Doolin | 10 | Daughter | — | Utah |
| 68 | Richard L. Doolin | 4 | Son | — | — |
| 69 | Joseph K. Mickelson | 57 | Head | Farmer | Utah |
| 70 | Bernice V. Mickelson | 43 | Wife | — | Colorado |
| 71 | Royle Mickelson | 21 | Son | Truck Driver | Colorado |
| 72 | Cecil Mickelson | 17 | Son | Farm Laborer | Colorado |
| 73 | Nancy Brady | 89 | Head | — | Mississippi |
| 74 | Allen Brady | 54 | Son | — | Mississippi |
| 75 | Estevan Medina | 54 | Head | Farm Laborer | New Mexico |
| 76 | Carlotta Medina | 48 | Wife | — | New Mexico |
| 77 | Arthur Medina | 16 | Son | Farm Laborer | Colorado |
| 78 | Margarita Medina | 15 | Daughter | — | Colorado |
| 79 | Juan Louis Medina | 11 | Son | — | Colorado |
| 80 | Sigifredo Medina | 8 | Son | — | Colorado |
Pedigree Summary
Alvin + 5 siblings
Gen 1 · 4 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)