WM
William Mueller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this William Mueller across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 5-person household.
Age 11
b. ~1929
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Mueller |
| Given Name | William A. Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1929 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Madelaine Mueller | Daughter | — | 6 | ~1934 |
| William Mueller | Son | — | 11 | ~1929 |
| Claire Mueller | Daughter | — | 3 | ~1937 |
| William Mueller | Head | — | 40 | ~1900 |
| Madeline Mueller | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Los Angeles, …
Son, age 1
Los Angeles, California · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | William E Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Utah |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 11
Los-Angeles-County, California · implied b. ~1929 — 5 household members
| Surname | Mueller |
| Given Name | William A. Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Highest Grade | No 5 |
| 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 Mueller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mueller
Son · 1940 · age 11 · b. ~1929 · California
★ You are viewing this record
Sibling
Claire Mueller
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madelaine Mueller
Sibling · 1940 · age 6
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-t0627-00393-00291)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John F. Jr Resser | 56 | Head | Dentist | Minnesota |
| 42 | Theresa S. Resser | 51 | Wife | — | South Dakota |
| 43 | William Resser | 26 | Son | Order Clerk | New York |
| 44 | Bruce Resser | 23 | Son | Pageboy | New York |
| 45 | Margaret Freeman | 28 | Daughter | — | South Dakota |
| 46 | Pearl Mcdill | 37 | Maid | Housekeeper | Oklahoma |
| 47 | Cora L. Franklin | 69 | Head | — | Wisconsin |
| 48 | Maren Anderson | 61 | Maid | Housework | Denmark |
| 49 | David Carney | 31 | Head | Proprietor | Maryland |
| 50 | Beatrice Carney | 27 | Wife | Bookkeeper | Pennsylvania |
| 51 | Edward Carney | 5 | Son | — | California |
| 52 | Catherine Westheider | 49 | Maid | Housekeeper | Indiana |
| 53 | Theodore Sparkuhl | 46 | Head | Physician | Surgeon | Germany |
| 54 | Helen Sparkuhl | 36 | Wife | — | Germany |
| 55 | Constantine Sparkuhl | 23 | Son | — | Germany |
| 56 | Mabel Sparkuhl | 21 | Daughter | — | Germany |
| 57 | Charles Sparkuhl | 17 | Son | — | Germany |
| 58 | Henry Sparkuhl | 16 | Son | — | Germany |
| 59 | Artemis Sparkuhl | 14 | Daughter | — | Germany |
| 60 | Anna Jensen | 76 | Head | — | Sweden |
| 61 | Elsie Jordan | 49 | Maid | Housekeeper | Michigan |
| 62 | Olive Grosner | 60 | Head | — | New York |
| 63 | Margaret Cavalier | 56 | Nurse | Practical Nurse | England |
| 64 | Lela Wooden | 33 | Maid | Housekeeper | Japan |
| 65 | William A. Mueller | 40 | Head | General Manager | Nebraska |
| 66 | Madeline E. Mueller | 40 | Wife | — | New York |
| 67 | William A. Jr Mueller THIS PERSON | 11 | Son | — | California |
| 68 | Madelaine Mueller | 6 | Daughter | — | California |
| 69 | Claire Mueller | 3 | Daughter | — | California |
| 70 | Zulime Garland | 70 | Head | — | Illinois |
| 71 | Mindret Lord | 36 | Son-in-law | Writer | Illinois |
| 72 | Isabel Lord | 36 | Daughter | — | Wisconsin |
| 73 | Ceyril Schram | 28 | Nurse | Practical Nurse | Nebraska |
| 74 | Frank L. Wood | 67 | Head | — | Missouri |
| 75 | Mary Lou Wood | 37 | Wife | — | California |
| 76 | Frances L. Wood | 12 | Daughter | — | California |
| 77 | Anna Herron | 52 | Maid | Housekeeper | Louisiana |
| 78 | Joseph Harper | 35 | Head | Broker | New York |
| 79 | Lela Harper | 31 | Wife | — | New Jersey |
| 80 | Peter E. Harper | 7 | Son | — | California |
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)