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John Mueller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Mueller across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 6-person household.
Age 65
b. ~1875
Male
Head
Born: Poland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mueller |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | janitor |
| Industry | copper brass manufacturer |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 975 |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Occupation | Janitor |
| Township / Ward | Chicago |
| Est. Birth Year | ~1875 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Mueller | Head | — | 65 | ~1875 |
| Edwin Mueller | Son | — | 20 | ~1920 |
| Carl Mueller | Son | — | 15 | ~1925 |
| Elmer Mueller | Son | — | 17 | ~1923 |
| Arthur Mueller | Son | — | 21 | ~1919 |
| Julianna Mueller | Spouse | — | 62 | ~1878 |
Census Appearances
1930
Cook, Illinois
Head, age 55
Cook, Illinois · implied b. ~1875 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1900 |
| Age at First Marriage | 21 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Machinist |
| Industry | Tool Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Home Owned/Rented | O |
| Home Value / Rent | 7000 |
| Radio Set | R |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Cook-County, Illinois
Head, age 65
Cook-County, Illinois · implied b. ~1875 — 6 household members
| Surname | Mueller |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | janitor |
| Industry | copper brass manufacturer |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 975 |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
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 John Mueller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mueller
Head · 1940 · age 65 · b. ~1875 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00993-00948)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marius Mortensen | 53 | Lodger | Landscape Gardener | Denmark |
| 42 | Peter Ab. Mollin | 57 | head | Maintenance | Russia |
| 43 | Mary Mollin | 55 | wife | 0 | Russia |
| 44 | Claudia Aeronas | 31 | daughter | Maid | Russia |
| 45 | Alexandria Bowen | 32 | daughter | Maid | Russia |
| 46 | Harold Bowen | 5 | grandson | 0 | Illinois |
| 47 | Patsy G. Madonna | 35 | head | Office Clerk | Pennsylvania |
| 48 | Marie Madonna | 32 | wife | 0 | Illinois |
| 49 | Charles Dulin | 36 | head | Promoter Foreman | Illinois |
| 50 | Hazel B. Dulin | 33 | wife | 0 | Illinois |
| 51 | Mary Dulin | 14 | daughter | 0 | Illinois |
| 52 | Mervin Dulin | 9 | son | 0 | Illinois |
| 53 | William Miller | 44 | head | Millwright | Illinois |
| 54 | Frances Miller | 42 | wife | 0 | Illinois |
| 55 | Cather Miller | 18 | daughter | Assembler | Illinois |
| 56 | Max Miller | 42 | head | Foreman | Illinois |
| 57 | Cora Miller | 41 | wife | 0 | Illinois |
| 58 | Clarence Miller | 14 | son | Assembler | Illinois |
| 59 | Fred S. Noble | 57 | head | Railway Postal Clerk | Illinois |
| 60 | Viola Noble | 57 | wife | 0 | Iowa |
| 61 | John D. Noble | 28 | son | Railway Clerk | Iowa |
| 62 | Robert Noble | 25 | son | Personnel Clerk | Iowa |
| 63 | Chester Noble | 20 | son | Messenger | Iowa |
| 64 | Arthur Noble | 17 | son | Delivery Boy | Iowa |
| 65 | Ralph Noble | 15 | son | 0 | Illinois |
| 66 | Eleanor Noble | 13 | daughter | 0 | Illinois |
| 67 | John Mueller THIS PERSON | 65 | head | Janitor | Poland |
| 68 | Julianna Mueller | 62 | wife | 0 | Poland |
| 69 | Arthur Mueller | 21 | son | Painter | Illinois |
| 70 | Edwin Mueller | 20 | son | Errand Boy | Illinois |
| 71 | Elmer Mueller | 17 | son | 0 | Illinois |
| 72 | Carl Mueller | 15 | son | 0 | Illinois |
| 73 | James Mauguspeppa | 57 | head | Laborer | Italy |
| 74 | Mary Mauguspeppa | 44 | wife | 0 | Italy |
| 75 | Josephine Mauguspeppa | 17 | daughter | 0 | Illinois |
| 76 | Frances Mauguspeppa | 15 | daughter | 0 | Illinois |
| 77 | Antonette Mauguspeppa | 13 | daughter | 0 | Illinois |
| 78 | Graham Jr. Duffield | 29 | head | Order Clerk | Michigan |
| 79 | Dorothy Duffield | 28 | wife | 0 | Wisconsin |
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)