MS
Mary Schroeder — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Schroeder across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1871), then head of a 4-person household.
Age 69
b. ~1871
Female
Spouse
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Schroeder |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1871 |
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 |
|---|---|---|---|---|
| Arthur Schroeder | Son | — | 59 | ~1881 |
| Fred Schroeder | Head | — | 77 | ~1863 |
| Mary Schroeder | Spouse | — | 69 | ~1871 |
| John Barschke | Other | — | 60 | ~1880 |
Census Appearances
1920
Cook, Illinois
Spouse, age 50
Cook, Illinois · implied b. ~1870 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schroeder |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Germany |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1930
Cook, Illinois
Spouse, age 60
Cook, Illinois · implied b. ~1870 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schrouder |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1884 |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Cook-County, Illinois
Spouse, age 69
Cook-County, Illinois · implied b. ~1871 — 4 household members
| Surname | Schroeder |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Schroeder across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Schroeder
Spouse · 1940 · age 69 · b. ~1871 · 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-t0627-01002-00879)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lorraine Levenson | 14 | Daughter | — | Illinois |
| 42 | Josephine Roderick | 67 | Head | — | Iowa |
| 43 | William Roderick | 40 | Son | Radio Assembler | Illinois |
| 44 | Hazel Jane Roderick | 39 | Wife | — | Wisconsin |
| 45 | Billy Roderick | 6 | Son | — | Illinois |
| 46 | Ray Bacon | 45 | Head | Jobber | Illinois |
| 47 | Patricia Bacon | 41 | Wife | — | Illinois |
| 48 | Emil Tschirke | 67 | Father in law | — | Germany |
| 49 | Theresa Tschirke | 64 | Wife | — | Hungary |
| 50 | Fred Schroeder | 77 | Head | — | Germany |
| 51 | Mary Schroeder THIS PERSON | 69 | Wife | — | Germany |
| 52 | Arthur Schroeder | 59 | Son | Watchman | Illinois |
| 53 | John Barschke | 60 | Brother in law | — | Illinois |
| 54 | Martha Lamusch | 59 | Head | — | Illinois |
| 55 | Felix Schmidt | 55 | Head | Laborer | Illinois |
| 56 | Edyth Schmidt | 49 | Wife | — | Illinois |
| 57 | Ellsworth Schmidt | 20 | Son | File Clerk | Illinois |
| 58 | Bernice Miller | 37 | Head | Policy Writer | Illinois |
| 59 | Earl Mckee | 21 | Son | Messenger | Illinois |
| 60 | Albert Lauer | 63 | Head | Retired | Illinois |
| 61 | Albert Jr. Lauer | 35 | Son | Die Fitter | Illinois |
| 62 | Florence Lauer | 31 | Wife | — | Wisconsin |
| 63 | Warren Lauer | 3 | Son | — | Wisconsin |
| 64 | Mathias Majerus | 48 | Head | Plumber | Illinois |
| 65 | Theresa Majerus | 42 | Wife | — | Germany |
| 66 | Irene Majerus | 22 | Daughter | Bookkeeper | Illinois |
| 67 | Mathias Jr. Majerus | 23 | Son | Polisher & Buffer | Illinois |
| 68 | Emma Schurk | 52 | Head | — | Illinois |
| 69 | Gertrude Pureschel | 50 | Daughter | Bookkeeper | Illinois |
| 70 | Herman Pureschel | 32 | Husband | Salesman | Illinois |
| 71 | Erwin Schurk | 32 | Son | Salesman | Illinois |
| 72 | Amy Schurk | 34 | Wife | Secretary | Sweden |
| 73 | Raymond Mcmahon | 32 | Head | Groceryman | Illinois |
| 74 | Sylvia Mcmahon | 30 | Wife | — | Illinois |
| 75 | Kathryn Mcmahon | 3 | Daughter | — | Illinois |
| 76 | Thomas Mcmahon | 1 | Son | — | Illinois |
| 77 | Mary Krynicki | 59 | Head | — | Hungary |
| 78 | Joseph Krynicki | 33 | Son | Dentist | Illinois |
| 79 | Eisbell Krynicki | 30 | Wife | Contometer Operator | Illinois |
| 80 | — | None | — | — | — |
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)