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John Schaffer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Schaffer across the 1910, 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a head (b.~1901), then head of a 5-person household.
Age 39
b. ~1901
Male
Head
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| 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 |
| Additional Details | |
| 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 |
| Occupation | Salesman |
| Township / Ward | Hawthorne |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Schaffer | Head | — | 39 | ~1901 |
| Marion Schaffer | Daughter | — | 12 | ~1928 |
| Ida Schaffer | Spouse | — | 40 | ~1900 |
| Dorothy Schaffer | Daughter | — | 7 | ~1933 |
| Patricia Schaffer | Daughter | — | 14 | ~1926 |
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 |
Head, age 29
Los Angeles, California · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| 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 |
1940
Los-Angeles-County, California
Head, age 39
Los-Angeles-County, California · implied b. ~1901 — 5 household members
| 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 Schaffer 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. ~1868
Source father
● Household
· direct · ~0.92
Father
Charles Shaffer
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Bertha Shaffer
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Schaffer
Head · 1940 · age 39 · 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
1940 US Federal Census — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00233-00319)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Pologni | 36 | Head | Owner | Colorado |
| 2 | Elsie Pologni | 35 | Wife | — | Colorado |
| 3 | Ray Pologni | 6 | Son | — | California |
| 4 | Wannona Pologni | 4 | Daughter | — | California |
| 5 | De Roy Parker | 60 | Father-in-law | Bookkeeper | Washington |
| 6 | Sarah Parker | 58 | Mother-in-law | — | Utah |
| 7 | James Wilkinson | 40 | Head | Machinist | England |
| 8 | Marguerite Wilkinson | 38 | Wife | — | California |
| 9 | Kathleen Wilkinson | 15 | Daughter | — | California |
| 10 | John Schaffer THIS PERSON | 39 | Head | Salesman | California |
| 11 | Ida Schaffer | 40 | Wife | — | California |
| 12 | Patricia Schaffer | 14 | Daughter | — | California |
| 13 | Marion Schaffer | 12 | Daughter | — | California |
| 14 | Dorothy Schaffer | 7 | Daughter | — | California |
| 15 | John Brock | 40 | Head | — | Massachusetts |
| 16 | Emilia Brock | 36 | Wife | — | Arizona |
| 17 | Edie Brock | 13 | Daughter | — | California |
| 18 | John Brock | 11 | Son | — | California |
| 19 | Eloisa Valade | 71 | Head | — | California |
| 20 | Albert Valade | 39 | Son | Owner | Arizona |
| 21 | Harold Anthony | 44 | Head | Carpenter | Iowa |
| 22 | Esther Anthony | 42 | Wife | — | Arkansas |
| 23 | Harold Anthony | 12 | Son | — | California |
| 24 | Dale Mackentat | 20 | Son | Sheet Metal | Iowa |
| 25 | John Krale | 49 | Head | Machinist | Massachusetts |
| 26 | Adeline Krale | 52 | Wife | — | New York |
| 27 | Harriett Brandt | 65 | Head | Tailoress | Arizona |
| 28 | William Staffer | 40 | Head | Steel Worker | Michigan |
| 29 | Agnes Staffer | 39 | Wife | — | Norway |
| 30 | William Staffer | 13 | Son | — | California |
| 31 | Carla Staffer | 10 | Daughter | — | California |
| 32 | Edward Staffer | 7 | Son | — | California |
| 33 | Chas Staffer | 4 | Son | — | California |
| 34 | Roger Staffer | 2 | Son | — | California |
| 35 | Emil Johnson | 72 | Father-in-law | — | Norway |
| 36 | Leslie Hermitage | 50 | Head | Burner | New York |
| 37 | Madeline Hermitage | 47 | Wife | — | Michigan |
| 38 | Leslie Hermitage | 20 | Son | New Worker | Michigan |
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 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)