WM
William Mueller — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this William Mueller across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents Emma & Ida — first a head (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Mueller |
| Given Name | William H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | E. St. Louis |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | Helper |
| Industry | Steel Cast Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 46 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Helper |
| Township / Ward | E St Louis |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Irene Mueller | Spouse | — | 18 | ~1922 |
| Karl Mueller | Son | — | ~1940 | |
| William Mueller | Head | — | 26 | ~1914 |
Census Appearances
1920
St Clair, …
Son, age 5
St Clair, Illinois · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Son, age 15
St Clair, Illinois · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Head, age 26
St.-Clair-County, Illinois · implied b. ~1914 — 3 household members
| Surname | Mueller |
| Given Name | William H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | E. St. Louis |
| 1935 Residence (County) | St. Clair |
| Occupation | Helper |
| Industry | Steel Cast Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 46 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Emma Mueller (~0.92 confidence) and mother Ida Mueller (~0.92 confidence) and father William Mueller (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Emma Mueller
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Ida Mueller
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
William Mueller
b. ~1886
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Mueller
Head · 1940 · age 26 · b. ~1914 · Illinois
★ 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 — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00881-00056)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Paul Gilliam | 50 | Head | Carpenter | Tennessee |
| 2 | Ella Gilliam | 46 | Wife | — | Arkansas |
| 3 | Frank Harlow | 33 | Head | Loader | Illinois |
| 4 | Alice Harlow | 44 | Wife | — | Arkansas |
| 5 | Emma Peters | 32 | Head | — | Illinois |
| 6 | Kenneth Peters | 16 | Son | — | Illinois |
| 7 | Evelyn Peters | 14 | Daughter | — | Illinois |
| 8 | Dolores Peters | 12 | Daughter | — | Illinois |
| 9 | Verdell Peters | 10 | Daughter | — | Illinois |
| 10 | Shirley Peters | 8 | Daughter | — | Illinois |
| 11 | John H Peters | 6 | Son | — | Illinois |
| 12 | Francis Peters | 5 | Son | — | Illinois |
| 13 | William J Bean | 35 | Head | Tractor Operator | Missouri |
| 14 | Sonia Bean | 29 | Wife | — | Kentucky |
| 15 | Ruby Pinion | 46 | Head | — | Tennessee |
| 16 | William Pinion | 21 | Son | Waiter | Tennessee |
| 17 | Carl Pinion | 17 | Son | — | Tennessee |
| 18 | Ann E Pinion | 17 | Daughter | — | Tennessee |
| 19 | Joseph G Eledge | 47 | Head | Proprietor | Kentucky |
| 20 | Fanny Eledge | 44 | Wife | — | Illinois |
| 21 | Terrence Cleary | 42 | Head | — | Illinois |
| 22 | William Cleary | 60 | Brother | Retired | Illinois |
| 23 | James Cleary | 53 | Brother | Laborer | Illinois |
| 24 | Joseph Cleary | 50 | Brother | Laborer | Illinois |
| 25 | Raymond Flanagan | 47 | Nephew | Tallyman | Illinois |
| 26 | Benjamin Maness | 59 | Head | Laborer | Tennessee |
| 27 | Alma Maness | 57 | Wife | — | Mississippi |
| 28 | Barbara Bremer | 0 | Daughter | — | Illinois |
| 29 | Lattie Brown | 0 | Daughter | — | Illinois |
| 30 | Liza Mae Bryant | 2 | Daughter | — | Illinois |
| 31 | Coral Jean Bryant | 2 | Daughter | — | Illinois |
| 32 | Donald Jean Blackburn | 12 | Son | — | Illinois |
| 33 | Barbara Jean Talker | 12 | Daughter | — | Illinois |
| 34 | Anna Armstrong | 75 | Head | — | Tennessee |
| 35 | Mary E Armstrong | 65 | Daughter | — | — |
| 36 | Betty Ann Armstrong | 5 | Daughter | — | — |
| 37 | Lula Nichols | 61 | Head | Paster | Tennessee |
| 38 | William H Mueller THIS PERSON | 26 | Head | Helper | Illinois |
| 39 | Irene Mueller | 18 | Wife | — | Illinois |
| 40 | Karl Mueller | 0 | Son | — | Illinois |
Pedigree Summary
William
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)