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Adolph Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Mendocino, California
Our Model Tree links this Adolph Johnson across the 1910, 1920 and 1930 US Censuses in Mendocino, California (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1904), then head of a 4-person household.
Age 26
b. ~1904
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Mendocino, California |
| Surname | Johnson |
| Given Name | Adolph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Additional Details | |
| Occupation | Chopping logs |
| Industry | Lumber Camp |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Chopping Logs |
| Township / Ward | Tenmile Township |
| Est. Birth Year | ~1904 |
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 Adolph | Age | Birth yr |
|---|---|---|---|---|
| John Johnson | Head | — | 52 | ~1878 |
| Lydia Johnson | Other | — | 49 | ~1881 |
| Elizabeth Johnson | Daughter | — | 17 | ~1913 |
| Adolph Johnson | Son | — | 26 | ~1904 |
Census Appearances
1910
Mendocino, California
Son, age 5
Mendocino, California · implied b. ~1905 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Adolph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
Mendocino, California
Son, age 16
Mendocino, California · implied b. ~1904 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Adolph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Finnish |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Mendocino, California
Son, age 26
Mendocino, California · implied b. ~1904 — 4 household members
| Surname | Johnson |
| Given Name | Adolph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Chopping logs |
| Industry | Lumber Camp |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Adolph Johnson across 3 US Census years (1910, 1920 and 1930) in Mendocino, California, using XGBoost record linkage. Identified parents: father John Johnson (~0.92 confidence) and father John Johnson (~0.92 confidence) and father John Johnson (~0.92 confidence) and mother Julia Johnson (~0.92 confidence) and mother Lyddi Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
John Johnson
b. ~1878
Source father
● Household
· direct · ~0.92
Father
John Johnson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Julia Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Lyddi Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Adolph Johnson
Son · 1930 · age 26 · b. ~1904 · California
★ You are viewing this record
Sibling
Elizabeth Johnson
Sibling · 1930 · age 17
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
1930 US Federal Census — Mendocino, California
Open full size
1930 US Federal Census — Mendocino, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel177:0976)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Erick Erickson | 68 | Head | Wood Cutter | Finland |
| 2 | Erick Jackson | 63 | Head | Wood Cutter | Finland |
| 3 | Joseph A. Luther | 54 | Head | Mechanic | Germany |
| 4 | Louis B. Cook | 71 | Head | Laborer | Michigan |
| 5 | Leonard Colberg | 58 | Head | Farmer | Sweden |
| 6 | William Welch | 65 | Head | Farmer | Illinois |
| 7 | Segrid Welch | 47 | Wife-H | — | Norway |
| 8 | Ralph Welch | 24 | Son | Mechanic (Auto) | California |
| 9 | Frank Arnold | 70 | Head | Farmer | Illinois |
| 10 | Mary Arnold | 70 | Wife-H | — | Illinois |
| 11 | Clarence Johnson | 28 | Head | Auto Mechanic | California |
| 12 | May Johnson | 22 | Wife-H | — | California |
| 13 | Eldred Johnson | 7 | Son | — | California |
| 14 | Manuel Bettencourt | 62 | Father-in-law | — | Azores Is. |
| 15 | Rose Bettencourt | 54 | Mother-in-law | — | Azores Is. |
| 16 | Albert Johnson | 64 | Head | Woodsman | Sweden |
| 17 | Carrie A. Johnson | 56 | Wife-H | — | California |
| 18 | Lawrence Sosa | 49 | Head | Woodsman | Switzerland |
| 19 | Claudina Sosa | 42 | Wife-H | — | Italy |
| 20 | Ida Sosa | 16 | Daughter | — | California |
| 21 | Lorenzo Sosa | 14 | Daughter | — | California |
| 22 | Paul Sosa | 12 | Son | — | California |
| 23 | Lawrence Sosa | 9 | Son | — | California |
| 24 | Claude Sosa | 7 | Son | — | California |
| 25 | John M. Johnson | 52 | Head | Laborer | Finland |
| 26 | Lydia Johnson | 49 | Wife-H | — | Finland |
| 27 | Adolph Johnson THIS PERSON | 26 | Son | Chopping Logs | California |
| 28 | Elizabeth Johnson | 17 | Daughter | — | California |
| 29 | Peter M. Johnson | 70 | Head | — | Denmark |
| 30 | Jessie Johnson | 63 | Wife-H | — | Canada English |
| 31 | Abram Pussinen | 51 | Head | Carpenter | Finland |
| 32 | Mary Pussinen | 52 | Wife-H | — | Finland |
| 33 | Emanuel Markkula | 39 | Head | Carpenter | Finland |
| 34 | Lydia Markkula | 36 | Wife-H | — | Finland |
| 35 | Laurie Markkula | 9 | Son | — | Finland |
| 36 | Lila Markkula | 6 | Daughter | — | California |
| 37 | Lulu Markkula | 3 | Daughter | — | California |
| 38 | Joseph Bear | 35 | Head | Wood Cutter | Finland |
| 39 | Edward Olson | 61 | Head | Farm Laborer | Sweden |
| 40 | John H. Roberts | 55 | Head | Woodsman | Missouri |
| 41 | Maggie Roberts | 49 | Wife-H | — | California |
| 42 | Pearl Roberts | 18 | Daughter | — | California |
| 43 | Alfred Roberts | 20 | Son | — | California |
| 44 | Herbert Roberts | 16 | Son | — | California |
| 45 | Myrl Roberts | 14 | Daughter | — | California |
| 46 | Jane Roberts | 10 | Daughter | — | California |
| 47 | August Johnson | 47 | Head | Farmer | Finland |
| 48 | Elizabeth Nye | 78 | Mother-in-law | — | California |
| 49 | Melville Irbas | 38 | Lodger | — | California |
| 50 | Edward Tahro | 33 | Lodger | Farm Laborer | Finland |
Pedigree Summary
Adolph + 1 sibling
Gen 1 · 5 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)