MS
Margaret Schmidt — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Margaret Schmidt across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 6-person household.
Age 50
b. ~1890
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Schmidt |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | East St. Louis |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Highest Grade | G 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | East St Louis |
| Est. Birth Year | ~1890 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| William Ducks | Other | — | 28 | ~1912 |
| William Schmidt | Head | — | 56 | ~1884 |
| William Ducks | Other | — | 7 | ~1933 |
| Margaret Schmidt | Spouse | — | 50 | ~1890 |
| William Schmidt | Son | — | 19 | ~1921 |
| Mildred Ducks | Daughter | — | 26 | ~1914 |
Census Appearances
1920
St Clair, …
Spouse, age 30
St Clair, Illinois · implied b. ~1890 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Spouse, age 40
St Clair, Illinois · implied b. ~1890 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 18 |
| 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
Spouse, age 50
St.-Clair-County, Illinois · implied b. ~1890 — 6 household members
| Surname | Schmidt |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | East St. Louis |
| 1935 Residence (County) | St. Clair |
| Highest Grade | G 7 |
| 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 Margaret Schmidt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Schmidt
Spouse · 1940 · age 50 · b. ~1890 · 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 — 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-t0627-00881-00687)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Malinda B. Turner | 33 | Head | Saleslady | Illinois |
| 42 | Ida Mae Turner | 15 | Daughter | — | Illinois |
| 43 | Ida M. Schlenk | 74 | Mother | — | Illinois |
| 44 | Theo D. Hamilton | 29 | Head | Passenger | Kentucky |
| 45 | Jennie Mae Hamilton | 27 | Wife | Waitress | Illinois |
| 46 | William H. Schmidt | 56 | Head | Electrician | Missouri |
| 47 | Margaret Schmidt THIS PERSON | 50 | Wife | — | Illinois |
| 48 | William Jr. Schmidt | 19 | Son | — | Illinois |
| 49 | William A. Ducks | 28 | Son-in-law | Clerk | Illinois |
| 50 | Mildred M. Ducks | 26 | Daughter | — | Illinois |
| 51 | William Gene Ducks | 7 | Grandson | — | Illinois |
| 52 | Nora G. Bank | 59 | Head | — | Illinois |
| 53 | Hayes A. Bank | 35 | Son | Clerk | Illinois |
| 54 | Howard C. Caswell | 38 | Head | Electrician | Indiana |
| 55 | Opal S. Caswell | 37 | Wife | — | Kentucky |
| 56 | Helen Caswell | 15 | Daughter | — | Indiana |
| 57 | Marion J. Caswell | 12 | Daughter | — | Michigan |
| 58 | Theodore Franklin | 70 | Head | — | Illinois |
| 59 | Mary E. Harvey | 82 | Mother-in-law | — | Illinois |
| 60 | Margaret A. Harvey | 56 | Sister-in-law | — | Illinois |
| 61 | John J. D. Walz | 59 | Head | Operating Eng. | Missouri |
| 62 | Evelyne Walz | 60 | Wife | — | Missouri |
| 63 | Rosetta J. Walz | 23 | Daughter | Clerical | Illinois |
| 64 | Oscar J. H. Walz | 20 | Son | Operating Eng. | Missouri |
| 65 | M. A. Spannagel | 46 | Head | Chief Clerk | Illinois |
| 66 | Eleanor B. Spannagel | 40 | Sister | Stenographer | Illinois |
| 67 | Barbara Spannagel | 77 | Mother | — | Illinois |
| 68 | Margaret E. Drumb | 68 | Head | — | Kentucky |
| 69 | Sadie Drumb | 63 | Sister-in-law | — | Indiana |
| 70 | Mary E. Compton | 64 | Head | — | Illinois |
| 71 | Glenn S. Compton | 33 | Son | — | Illinois |
| 72 | Charles M. G. Erica | 31 | Head | Labor | Illinois |
| 73 | Bessie L. Erica | 32 | Wife | Millinery | Illinois |
| 74 | Edward J. Pollard | 23 | Lodger | Porter | Illinois |
| 75 | August Buenhardt | 57 | Head | Fireman | Illinois |
| 76 | Meta A. Buenhardt | 51 | Wife | — | Illinois |
| 77 | Marjorie B. Buenhardt | 14 | Daughter | — | Illinois |
| 78 | Avril C. Zimmerman | 40 | Head | Salesman | Illinois |
| 79 | Genevieve M. Zimmerman | 38 | Wife | — | Illinois |
| 80 | Minnie Schmidt | 82 | Head | — | Louisiana |
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)