HJ
Harold Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Francisco, California
Our Model Tree links this Harold Johnson across the 1920, 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents Fred & John — first a son (b.~1908), then head of a 6-person household.
Age 22
b. ~1908
Male
Son
Born: Utah
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Johnson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Wyoming |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Occupation | Clerk |
| Industry | Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Clerk |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1908 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Fred Johnson | Head | — | 57 | ~1873 |
| Harold Johnson | Son | — | 22 | ~1908 |
| Fred Johnson | Son | — | 25 | ~1905 |
| Frank Johnson | Son | — | 15 | ~1915 |
| Clyde Johnson | Son | — | 13 | ~1917 |
| Geraldine Johnson | Spouse | — | 47 | ~1883 |
Census Appearances
Son, age 11
San Francisco, California · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Harvey |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Wyoming |
| Mother's Birthplace | Denmark |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
San Francisco, …
Son, age 22
San Francisco, California · implied b. ~1908 — 6 household members
| Surname | Johnson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Wyoming |
| Mother's Birthplace | Denmark |
| Occupation | Clerk |
| Industry | Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
San-Francisco-County, California
Head, age 31
San-Francisco-County, California · implied b. ~1909 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Handy Man |
| Industry | Restaurant |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 Harold Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Johnson (~0.92 confidence) and father John Johnson (~0.92 confidence) and mother Alice Johnson (~0.92 confidence) and mother Geraldine Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Father
John Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Alice Johnson
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Geraldine Johnson
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Johnson
Son · 1930 · age 22 · b. ~1908 · California
★ You are viewing this record
Sibling
Fred Johnson
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clyde Johnson
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Johnson
Sibling · 1930 · age 15
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 — San Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel196:0891)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lorenzo Armanino | 64 | Head | Retired | Italy |
| 2 | Lucie Armanino | 55 | Wife | — | California |
| 3 | Edna Armanino | 21 | Daughter | Clerk | California |
| 4 | Howard Armanino | 21 | Son | Clerk | California |
| 5 | Fred Larkins | 73 | Lodger | Retired | California |
| 6 | Fred Johnson | 57 | Head | Clerk | Wyoming |
| 7 | Geraldine Johnson | 47 | Wife | — | Denmark |
| 8 | Fred Johnson | 25 | Son | Clerk | Utah |
| 9 | Harold Johnson THIS PERSON | 22 | Son | Clerk | Utah |
| 10 | Frank Johnson | 15 | Son | Clerk | Utah |
| 11 | Clyde Johnson | 13 | Son | School | California |
| 12 | John Arago | 57 | Head | Laborer | Italy |
| 13 | Julia Arago | 41 | Wife | — | Italy |
| 14 | Emma Arago | 14 | Daughter | Stenographer | California |
| 15 | Timothy Lynch | 42 | Head | Baker | Montana |
| 16 | Mary Lynch | 32 | Wife | — | Missouri |
| 17 | Jack Lynch | 6 | Son | — | Washington |
| 18 | Ruth Lynch | 6 | Daughter | — | Washington |
| 19 | Ed Harris | 12 | Step-son | — | Washington |
| 20 | Harold Harris | 12 | Step-son | — | Washington |
| 21 | Jack Harris | 12 | Step-son | — | Washington |
| 22 | Dominic Guatella | 50 | Head | Teamster | Italy |
| 23 | Kate Guatella | 43 | Wife | — | Italy |
| 24 | Hilda Guatella | 13 | Daughter | — | Italy |
| 25 | Alfred Guatella | 14 | Son | — | Ohio |
| 26 | Mary Guatella | 11 | Daughter | — | California |
| 27 | Madeline Guatella | 10 | Daughter | — | California |
| 28 | Louis Guatella | 8 | Son | — | California |
| 29 | Johnny Guatella | 6 | Son | — | California |
| 30 | Guy Cithard | 25 | Head | Fireman | Kentucky |
| 31 | Viola Cithard | 22 | Wife | Bookkeeper | California |
| 32 | Rose Ghiglizza | 53 | Head | — | Italy |
| 33 | Albert Ghiglizza | 19 | Son | Blacksmith | California |
| 34 | Joseph Lapechet | 37 | Head | Retired | France |
| 35 | Rose Lapechet | 25 | Wife | — | France |
| 36 | George Lapechet | 11 | Lodger | — | California |
| 37 | Georgette Lapechet | 11 | Lodger | — | California |
| 38 | Luigi Armanino | 40 | Head | Laborer | Italy |
| 39 | Martha Armanino | 41 | Wife | — | Italy |
| 40 | George Armanino | 30 | Lodger | Laborer | Italy |
| 41 | William Davis | 41 | Head | Mechanic | England |
| 42 | Yvone Davis | 25 | Wife | — | South Dakota |
| 43 | Madeline Davis | 4 | Daughter | — | California |
| 44 | Joan Davis | 2 | Daughter | — | California |
| 45 | Frank Davis | 1 | Son | — | California |
| 46 | Samuel Garcia | 34 | Head | Laborer | Mexico |
| 47 | Rosa Garcia | 34 | Wife | — | Mexico |
| 48 | Jose Garcia | 13 | Son | — | Mexico |
| 49 | Samuel Jr Garcia | 4 | Son | — | Mexico |
| 50 | Fred Avila | 35 | Lodger | Laborer | Mexico |
Related Census Records
Pedigree Summary
Harold + 3 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 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)