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John Shaffer — 1930 US Census Record
Model Tree available1930 United States Federal Census · Los Angeles, California
Our Model Tree links this John Shaffer across the 1910, 1920, 1930 and 1940 US Censuses in Los Angeles, California (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a head (b.~1901), then head of a 4-person household.
Age 29
b. ~1901
Male
Head
Born: California
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | Shaffer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 23 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Salesman |
| Industry | Oil Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Veteran | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Salesman |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1901 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Virginia Shaffer | Daughter | — | 5 | ~1925 |
| Marilyn Shaffer | Daughter | — | 1 | ~1929 |
| John Shaffer | Head | — | 29 | ~1901 |
| Genevieve Shaffer | Other | — | 27 | ~1903 |
Census Appearances
1910
Los Angeles, …
Son, age 9
Los Angeles, California · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
Los Angeles, …
Son, age 19
Los Angeles, California · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shaffer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Head, age 29
Los Angeles, California · implied b. ~1901 — 4 household members
| Surname | Shaffer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 23 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Occupation | Salesman |
| Industry | Oil Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Veteran | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
Head, age 39
Los-Angeles-County, California · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schaffer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Hawthorne |
| 1935 Residence (County) | Los Angeles |
| Occupation | Salesman |
| Industry | Laundry Supply |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1700 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| 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 John Shaffer across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Shaffer (~0.92 confidence) and father Charles Shaffer (~0.92 confidence) and mother Bertha Shaffer (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Shaffer
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Charles Shaffer
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Bertha Shaffer
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Shaffer
Head · 1930 · age 29 · b. ~1901 · California
★ 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 — Los Angeles, California
Open full size
1930 US Federal Census — Los Angeles, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel132:0057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Irving M. Fuller | 28 | Head | — | No Dakota |
| 2 | Eileen M. Fuller | 27 | Wife-H | — | No Dakota |
| 3 | Eileen M. Fuller | 7 | Daughter | — | No Dakota |
| 4 | Kathleen V. Miller | 21 | Sister-in-law | Operator | No Dakota |
| 5 | Frank A. Chew | 40 | Head | Asst Cashier | Pennsylvania |
| 6 | Rosamond E. Chew | 39 | Wife-H | — | England |
| 7 | Eileen F. Chew | 6 | Daughter | — | California |
| 8 | Kate Greenwood | 76 | Head-H | — | New York |
| 9 | Pansie A. Greenwood | 42 | Daughter | Seamstress | Illinois |
| 10 | Bessie V. Greenwood | 32 | Daughter | Bookkeeper | Missouri |
| 11 | Jessie G. Greenwood | 32 | Daughter | Record Clerk | Missouri |
| 12 | Mason B. Stanfield | 53 | Head | Electrician | Kansas |
| 13 | Lillie V. Stanfield | 44 | Wife-H | — | Michigan |
| 14 | Laurel L. Olson | 21 | Head-H | Laborer | No Dakota |
| 15 | Mary N. Olson | 50 | Mother | File Clerk | Minnesota |
| 16 | Joseph Rosenberg | 48 | Head | Carpenter | Poland |
| 17 | Mary Rosenberg | 40 | Wife-H | Tailoress | Russia |
| 18 | Frank U. Dortch | 30 | Head | Mechanist | California |
| 19 | Verna C. Dortch | 28 | Wife-H | — | Illinois |
| 20 | John W. Mitchell | 54 | Head | — | Iowa |
| 21 | Alice E. Mitchell | 53 | Wife-H | — | Kentucky |
| 22 | Paul E. Lanham | 21 | Lodger | Brakeman | Missouri |
| 23 | George E. Lanham | 47 | Lodger | Lineman | Missouri |
| 24 | John Shaffer THIS PERSON | 29 | Head | Salesman | California |
| 25 | Genevieve M. Shaffer | 27 | Wife-H | — | California |
| 26 | Virginia M. Shaffer | 5 | Daughter | — | California |
| 27 | Marilyn Shaffer | 1 | Daughter | — | California |
| 28 | Joseph A. Rokus | 42 | Head | Piano Tuner | Austria |
| 29 | Rebecca B. Rokus | 34 | Wife-H | — | Pennsylvania |
| 30 | Stephen A. Randall | 27 | Head | Painter | Illinois |
| 31 | Delpha M. Randall | 27 | Wife-H | Servant | Indiana |
| 32 | Betty L. Randall | 5 | Daughter | — | California |
| 33 | Robert E. Randall | 4 | Son | — | California |
| 34 | Francis I. Burns | 43 | Head | Chauffeur | Kansas |
| 35 | Ruby J. Burns | 38 | Wife-H | — | Indiana |
| 36 | Richard H. Burns | 10 | Son | — | California |
| 37 | Hazel L. Burns | 7 | Daughter | — | California |
| 38 | — | None | — | — | — |
| 39 | — | None | — | — | — |
| 40 | — | None | — | — | — |
| 41 | — | None | — | — | — |
| 42 | — | None | — | — | — |
| 43 | — | None | — | — | — |
| 44 | — | None | — | — | — |
| 45 | — | None | — | — | — |
| 46 | — | None | — | — | — |
| 47 | — | None | — | — | — |
| 48 | — | None | — | — | — |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
Related Census Records
Pedigree Summary
John
Gen 1 · 3 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)