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Mary Muller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Muller across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 6-person household.
Age 56
b. ~1884
Female
Head
Born: Poland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Muller |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1884 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Harold Muller | Son | — | 16 | ~1924 |
| Jeanette Muller | Daughter | — | 19 | ~1921 |
| Mary Muller | Head | — | 56 | ~1884 |
| Joseph Muller | Son | — | 27 | ~1913 |
| Stanley Muller | Son | — | 22 | ~1918 |
| Eleanor Muller | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Cook, Illinois
Other, age 48
Cook, Illinois · implied b. ~1882 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 20 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read/Write | No |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Cook-County, Illinois
Head, age 56
Cook-County, Illinois · implied b. ~1884 — 6 household members
| Surname | Muller |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| 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 Mary Muller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Muller
Head · 1940 · age 56 · b. ~1884 · 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
40 people indexed on this census page (nara:1940:m-t0627-00985-00237)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Jones | 48 | Wife | — | Illinois |
| 2 | Frances Jones | 27 | Daughter | Floor Girl | Illinois |
| 3 | Walter Rataiczyk | 63 | Head | Janitor | Illinois |
| 4 | Constance Rataiczyk | 59 | Wife | — | Pennsylvania |
| 5 | Henry Rataiczyk | 30 | Son | Orderly | Wisconsin |
| 6 | Sylvester Rataiczyk | 28 | Son | Assistant Foreman | Wisconsin |
| 7 | George Rataiczyk | 21 | Son | Wire Winder | Illinois |
| 8 | Edward Ratke | 39 | Son | Filing Cards | Wisconsin |
| 9 | Julia Ratke | 41 | Daughter | — | Wisconsin |
| 10 | Roman Ratke | 25 | Grandson | Orderly | Illinois |
| 11 | Anthony Schimanski | 34 | Head | Digger | Illinois |
| 12 | Marian Schimanski | 30 | Wife | — | Illinois |
| 13 | Anthony Jr. Schimanski | 13 | Son | — | Illinois |
| 14 | Robert Schimanski | 7 | Son | — | Illinois |
| 15 | Frank Kogan | 52 | Head | Bricklayer | Poland |
| 16 | Mary Kogan | 50 | Wife | — | Poland |
| 17 | Peter J. Zblewski | 58 | Head | Bailiff | Illinois |
| 18 | Mary Zblewski | 53 | Wife | — | Illinois |
| 19 | Irene Dosenbach | 32 | Daughter | Coil Winding | Illinois |
| 20 | Dolores Dosenbach | 12 | Daughter | — | Illinois |
| 21 | Charles Gordon | 31 | Son in law | Order Filler | Scotland |
| 22 | Genevieve Gordon | 30 | Daughter | — | Illinois |
| 23 | Gail Gordon | 0 | Daughter | — | Illinois |
| 24 | Millard Castano | 22 | nephew | Stock Clerk | Illinois |
| 25 | Nellie Marcinkowski | 55 | Head | Finisher | Lithuania |
| 26 | Anthony Zmyewski | 32 | Son in law | Machine Knife Maker | Illinois |
| 27 | Madelyn Zmyewski | 25 | Daughter | — | Illinois |
| 28 | Helen Zmyewski | 4 | Daughter | — | Illinois |
| 29 | Robert Zmyewski | 1 | Grandson | — | Illinois |
| 30 | Theodore Sadbaras | 50 | Lodger | Repairman | Lithuania |
| 31 | Bernard Kugleancius | 65 | Head | Janitor | Lithuania |
| 32 | Anna Kugleancius | 53 | Wife | — | Lithuania |
| 33 | Bernard Kugleancius | 31 | Son | Assistant Bookkeeper | Illinois |
| 34 | Angela Kugleancius | 28 | Daughter | Typist | Illinois |
| 35 | Mary Muller THIS PERSON | 56 | Head | — | Poland |
| 36 | Joseph Muller | 27 | Son | Punch Press Opr. | Illinois |
| 37 | Stanley Muller | 22 | Son | Tool & Die Maker | Illinois |
| 38 | Eleanor Muller | 21 | Daughter | Labeler | Illinois |
| 39 | Jeanette Muller | 19 | Daughter | Receptionist | Illinois |
| 40 | Harold Muller | 16 | Son | Helper | Illinois |
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)