WM
William Mueller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Joaquin-County, California
Our Model Tree links this William Mueller across the 1930 and 1940 US Censuses in San-Joaquin-County, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 6-person household.
Age 11
b. ~1929
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Joaquin-County, California |
| Surname | Mueller |
| Given Name | William C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Tulare Township |
| 1935 Residence (County) | San Joaquin |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Tulare Township |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Helen Mueller | Daughter | — | 13 | ~1927 |
| William Mueller | Son | — | 11 | ~1929 |
| Otto Mueller | Head | — | 38 | ~1902 |
| Laura Mueller | Spouse | — | 34 | ~1906 |
| Florence Mueller | Daughter | — | 9 | ~1931 |
| Barbara Mueller | Daughter | — | 2 | ~1938 |
Census Appearances
1930
San Joaquin, …
Son, age 1
San Joaquin, California · implied b. ~1929 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Muller |
| Given Name | William C |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Nebraska |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Joaquin-County, California
Son, age 11
San-Joaquin-County, California · implied b. ~1929 — 6 household members
| Surname | Mueller |
| Given Name | William C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Tulare Township |
| 1935 Residence (County) | San Joaquin |
| Highest Grade | No 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 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
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Sibling
Florence Mueller
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Mueller
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mueller
Sibling · 1940 · age 13
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 — San-Joaquin-County, California
Open full size
1940 US Federal Census — San-Joaquin-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00327-00226)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John E Condon | 49 | Son | Farmer | California |
| 2 | Harriet C Brown | 41 | Daughter | # | California |
| 3 | John E Brown | 9 | Grandchild | — | California |
| 4 | Jessie L Brown | 5 | Grandchild | — | California |
| 5 | George O Brown | 40 | Head | Farmer | California |
| 6 | Jennie H Brown | 70 | Mother | — | New York |
| 7 | Robert A Brown | 48 | Brother | Laborer | California |
| 8 | Otto F Mueller | 38 | Head | Farmer | California |
| 9 | Laura M Mueller | 34 | Wife | — | Nebraska |
| 10 | Helen V Mueller | 13 | Daughter | — | California |
| 11 | William C Mueller THIS PERSON | 11 | Son | — | California |
| 12 | Florence M Mueller | 9 | Daughter | — | California |
| 13 | Barbara J Mueller | 2 | Daughter | — | California |
| 14 | Clyde W Cook | 50 | Head | Laborer | Missouri |
| 15 | Jack Flarity | 53 | Partner | Laborer | Irish Free State |
| 16 | John E Freeman | 26 | Partner | Brakeman | California |
| 17 | Herman B Strecker | 70 | Head | — | Germany |
| 18 | Gerda J Strecker | 55 | Wife | — | California |
| 19 | Herman B Jr Strecker | 21 | Son | Farmer | California |
| 20 | Florence O Strecker | 23 | Son's wife | — | California |
| 21 | Donald L Strecker | 15 | Son | — | California |
| 22 | Karen R Strecker | 0 | Granddaughter | — | California |
| 23 | — | None | — | — | — |
| 24 | — | None | — | — | — |
| 25 | — | None | — | — | — |
| 26 | — | None | — | — | — |
| 27 | — | None | — | — | — |
| 28 | Herman K Gaul | 42 | Head | Farmer | California |
| 29 | Bessie A Gaul | 42 | Wife | — | Oklahoma |
| 30 | Almina B Gaul | 16 | Daughter | — | California |
| 31 | Harry H Geck | 48 | Head | Farmer | California |
| 32 | Frederick H Miller | 52 | Partner | Choreman | Germany |
| 33 | Charles S Geck | 51 | Head | Farmer | California |
| 34 | Kate M Geck | 54 | Wife | — | California |
| 35 | Charles G Geck | 26 | Head | Co-Partner Farmer | California |
| 36 | Gwendolyn N Geck | 25 | Wife | — | California |
| 37 | Frank E Follett | 70 | Head | — | Rhode Island |
| 38 | Leland Meyer | 73 | Head | Farmer | California |
| 39 | Abigail E Meyer | 67 | Wife | — | California |
| 40 | Robert N Meyer | 42 | Son | Laborer | 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)