RS
Robert Schmidt — 1940 US Census Record
Model Tree available1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Robert Schmidt across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed), with identified parents Gustino & Ethel — first a son (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Schmidt |
| Given Name | Robert C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Oakland city |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Occupation | Inspection |
| Industry | Calculating machine |
| Income (1939) | 200 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Inspection |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1914 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Keith Schmidt | Son | — | 17 | ~1923 |
| Augustus Schmidt | Head | — | 53 | ~1887 |
| Ethel Schmidt | Spouse | — | 56 | ~1884 |
| Robert Schmidt | Son | — | 26 | ~1914 |
Census Appearances
1920
Alameda, California
Son, age 6
Alameda, California · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Alameda, California
Son, age 16
Alameda, California · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Alameda-County, California
Son, age 26
Alameda-County, California · implied b. ~1914 — 4 household members
| Surname | Schmidt |
| Given Name | Robert C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Oakland city |
| 1935 Residence (County) | Alameda |
| Occupation | Inspection |
| Industry | Calculating machine |
| Income (1939) | 200 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Robert Schmidt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Gustino Santi (~0.92 confidence) and mother Ethel Schmidt (~0.92 confidence) and father August Schmidt (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Gustino Santi
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Ethel Schmidt
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
August Schmidt
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Schmidt
Son · 1940 · age 26 · b. ~1914 · California
★ You are viewing this record
Sibling
Keith Schmidt
Sibling · 1940 · 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
1940 US Federal Census — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00438-00331)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin Robison | 3 | Son | — | California |
| 2 | Leander B. Atkinson | 37 | Head | Dentist | California |
| 3 | Ruth C. Atkinson | 33 | Wife | — | California |
| 4 | Linda Lou Atkinson | 5 | Daughter | — | California |
| 5 | Robert W. Rudy | 35 | Head | Sales Manager | England |
| 6 | Lucille W. Rudy | 33 | Wife | — | California |
| 7 | William R. Rudy | 5 | Son | — | California |
| 8 | Harry Sunderland | 45 | Head | Postal Supervisor | England |
| 9 | Madeline V. Sunderland | 39 | Wife | — | Missouri |
| 10 | William E. Sunderland | 7 | Son | — | California |
| 11 | Harry D. Sunderland | 4 | Son | — | California |
| 12 | Emily Sunderland | 70 | Mother | — | England |
| 13 | Herbert Sunderland | 47 | Brother | Grocery Clerk | England |
| 14 | Sidney W. Robinson | 39 | Head | Load Dispatcher | Illinois |
| 15 | Helen M. Robinson | 40 | Wife | — | Wyoming |
| 16 | Helen Mae Robinson | 17 | Daughter | — | Utah |
| 17 | Bruce M. Robinson | 12 | Son | — | California |
| 18 | Harold S. Robinson | 3 | Son | — | California |
| 19 | Myrtie B. Hills | 67 | Aunt | Companion | New York |
| 20 | Augustus O. Schmidt | 53 | Head | — | Indiana |
| 21 | Ethel W. Schmidt | 56 | Wife | — | Indiana |
| 22 | Robert C. Schmidt THIS PERSON | 26 | Son | Inspection | Indiana |
| 23 | Keith N. Schmidt | 17 | Son | — | California |
| 24 | Eric H. Anderson | 35 | Head | Dentist | California |
| 25 | Virginia J. Anderson | 31 | Wife | — | California |
| 26 | Gloria B. Anderson | 2 | Daughter | — | California |
| 27 | Ethel Anderson | 38 | Sister | Housekeeper | California |
| 28 | Ole C. Lynn | 36 | Head | Shoe Merchant | Illinois |
| 29 | Elizabeth P. Lynn | 31 | Wife | — | Oregon |
| 30 | Elizabeth A. Lynn | 7 | Daughter | — | California |
| 31 | William R. Lynn | 5 | Son | — | California |
| 32 | Richard D. Lynn | 2 | Son | — | California |
| 33 | Arlington Johnson | 37 | Head | Grocery | Massachusetts |
| 34 | Katherine Johnson | 37 | Wife | — | Massachusetts |
| 35 | Dorothy Johnson | 10 | Daughter | — | California |
| 36 | Donald Johnson | 8 | Son | — | California |
| 37 | Archibald Thomson | 49 | Head | Machinist | Scotland |
| 38 | Letetia Thomson | 55 | Wife | — | Scotland |
Pedigree Summary
Robert + 1 sibling
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)