WK
William Keller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this William Keller across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 7-person household.
Age 16
b. ~1924
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Keller |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1924 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margaret Keller | Daughter | — | 14 | ~1926 |
| Dorothy Keller | Spouse | — | 40 | ~1900 |
| Carolyn Keller | Daughter | — | 10 | ~1930 |
| John Keller | Head | — | 40 | ~1900 |
| William Keller | Son | — | 16 | ~1924 |
| John Keller | Son | — | 20 | ~1920 |
| Robert Keller | Son | — | 17 | ~1923 |
Census Appearances
1930
Los Angeles, …
Son, age 6
Los Angeles, California · implied b. ~1924 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keller |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 16
Los-Angeles-County, California · implied b. ~1924 — 7 household members
| Surname | Keller |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 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 William Keller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Keller
Son · 1940 · age 16 · b. ~1924 · California
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Sibling
Robert Keller
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carolyn Keller
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Keller
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Keller
Sibling · 1940 · age 20
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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00412-00316)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jeanette M. Sardo | 9 | Daughter | — | California |
| 2 | Francis P. Rochefort | 53 | Head | Manager | Canada |
| 3 | Marguerite C. Rochefort | 44 | Wife | — | New York |
| 4 | Mary J. Rochefort | 16 | Daughter | — | California |
| 5 | Muriel J. Rochefort | 13 | Daughter | — | California |
| 6 | Frances P. Rochefort | 6 | Daughter | — | California |
| 7 | James M. Oliphant | 74 | Head | — | Scotland |
| 8 | Mary Oliphant | 66 | Wife | — | Scotland |
| 9 | Clement W. Fisher | 42 | Head | Plumber | Missouri |
| 10 | Aina A. Fisher | 32 | Wife | — | Michigan |
| 11 | Joan M. Fisher | 1 | Daughter | — | California |
| 12 | August Swanson | 54 | Head | Carpenter | Sweden |
| 13 | Hulda E. Swanson | 51 | Wife | — | Sweden |
| 14 | Jennie Weinfeld | 39 | Lodger | Seamstress | Austria |
| 15 | W. Earl Ii Burris | 27 | Head | Salesman | California |
| 16 | Mildred B. Burris | 23 | Wife | — | California |
| 17 | W. Earl Iii Burris | 1 | Son | — | California |
| 18 | Joseph H. Hudson | 31 | Head | Glass Grinder | Canada |
| 19 | Euphemia B. Hudson | 32 | Wife | — | Scotland |
| 20 | Ronald J. Hudson | 7 | Son | — | California |
| 21 | Angela Dempsey | 45 | Head | Teacher | Minnesota |
| 22 | Catherine Dempsey | 76 | Sister | — | Wisconsin |
| 23 | Julia Dempsey | 69 | Sister | — | Minnesota |
| 24 | Harry D. Nolan | 27 | Head | Labourer | Michigan |
| 25 | Harry D. Snitman | 30 | Partner | Gardener | Canada |
| 26 | Meyer Cahzin | 69 | Head | Proprietor | Poland |
| 27 | Anna Cahzin | 62 | Wife | — | Poland |
| 28 | John H. Keller | 40 | Head | Meat Cutter | California |
| 29 | Dorothy W. Keller | 40 | Wife | Owner | Illinois |
| 30 | John H. Jr. Keller | 20 | Son | Apprentice Body Fender | California |
| 31 | Robert L. Keller | 17 | Son | Assistant | California |
| 32 | William J. Keller THIS PERSON | 16 | Son | — | California |
| 33 | Margaret L. Keller | 14 | Daughter | — | California |
| 34 | Carolyn R. Keller | 10 | Daughter | — | California |
| 35 | Joseph O. Gregg | 43 | Head | Proprietor | Michigan |
| 36 | Lucille E. Gregg | 21 | Daughter | Sales Clerk | Michigan |
| 37 | Joseph O. Gregg | 20 | Son | New Worker | Michigan |
| 38 | William Blanchard | 70 | Head | — | Missouri |
| 39 | Amanda L. Blanchard | 69 | Wife | — | Missouri |
| 40 | Goldie M. Knowles | 34 | Daughter | Proprietor | Missouri |
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)