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Mary Mueller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Mueller across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Female
Spouse
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mueller |
| Given Name | Mary C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
| Township / Ward | Chicago |
| Est. Birth Year | ~1901 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Richard Mueller | Son | — | 12 | ~1928 |
| James Mueller | Son | — | 16 | ~1924 |
| Edmund Mueller | Head | — | 42 | ~1898 |
| Mary Mueller | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Cook, Illinois
Other, age 33
Cook, Illinois · implied b. ~1897 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | Margaret |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1918 |
| Age at First Marriage | 23 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | irish free state |
1940
Cook-County, Illinois
Spouse, age 39
Cook-County, Illinois · implied b. ~1901 — 4 household members
| Surname | Mueller |
| Given Name | Mary C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
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 Mueller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mueller
Spouse · 1940 · age 39 · b. ~1901 · 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-t0627-01011-00219)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles D. Haake | 67 | Head | — | Germany |
| 2 | Robert R. Haake | 20 | Son | Wood Worker | Illinois |
| 3 | Robert D. Benson | 56 | Head | Watchman | Sweden |
| 4 | Hanna S. Benson | 55 | Wife | — | Sweden |
| 5 | Joseph E. Lundgren | 24 | Head | Repairman | Illinois |
| 6 | Joy B. Lundgren | 20 | Wife | — | Illinois |
| 7 | Jo-Anne V. Lundgren | 1 | Daughter | — | Illinois |
| 8 | Edmund D. Mueller | 42 | Head | Repairman | Illinois |
| 9 | Mary C. Mueller THIS PERSON | 39 | Wife | — | Irish Free State |
| 10 | James C. Mueller | 16 | Son | — | Illinois |
| 11 | Richard E. Mueller | 12 | Son | — | Illinois |
| 12 | Joseph L. Mueller | 43 | Head | Laborer | Illinois |
| 13 | Louise M. Mueller | 43 | Wife | — | Illinois |
| 14 | Joseph F. Mueller | 15 | Son | — | Illinois |
| 15 | Jess R. Olson | 37 | Head | Supervisor Meter Reader | Illinois |
| 16 | Marie Olson | 43 | Wife | Secretary | Illinois |
| 17 | Kenneth Corbet | 17 | Step son | — | Illinois |
| 18 | Burton Corbet | 16 | Step son | — | Illinois |
| 19 | William L. Hall | 44 | Head | Manager | Illinois |
| 20 | Margaret M. Hall | 42 | Wife | — | Canada-French |
| 21 | William L. Jr. Hall | 20 | Son | Clerk | Illinois |
| 22 | Ernest Cleff | 69 | Head | Stock Clerk | Germany |
| 23 | Minnie B. Cleff | 60 | Wife | — | Illinois |
| 24 | Genevive C. Cambell | 29 | Daughter | Office Clerk | Illinois |
| 25 | Genevive V. Cambell | 3 | Granddaughter | — | Illinois |
| 26 | Eric R. Carlson | 49 | Head | Maintaining Man | Sweden |
| 27 | Judith A. Carlson | 46 | Wife | — | Sweden |
| 28 | Ruth M. Carlson | 22 | Daughter | Office Worker | Illinois |
| 29 | Michael Schag | 24 | Son in law | Tester | Illinois |
| 30 | Esther V. Schag | 23 | Daughter | Biller | Illinois |
| 31 | Michael R. Schag | 1 | Grandson | — | Illinois |
| 32 | Willard A. Bingel | 29 | Head | Truck Driver | Illinois |
| 33 | Elleanor M. Bingel | 25 | Wife | — | Illinois |
| 34 | Willard A. Jr. Bingel | 1 | Son | — | Illinois |
| 35 | Bertha Meverdierks | 78 | Mother in law | — | Germany |
| 36 | George F. Meverdierks | 23 | Brother in law | Meat Cutter | Illinois |
| 37 | Bernard J. Koertgen | 40 | Head | Time Keeper | Illinois |
| 38 | Cecelia C. Koertgen | 46 | Wife | — | Illinois |
| 39 | Bernard Koertgen | 12 | Son | — | Illinois |
| 40 | Cecelia T. Koertgen | 8 | Daughter | — | 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)