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Bertha Schmidt — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Illinois
Our Model Tree links this Bertha Schmidt across the 1920, 1930 and 1940 US Censuses in Madison-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 5-person household.
Age 55
b. ~1885
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Illinois |
| Surname | Schmidt |
| Given Name | Bertha E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Lebanon |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | St Jacob Village |
| Est. Birth Year | ~1885 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Mary Porter | Other | — | 5 | ~1935 |
| Lucille Porter | Daughter | — | 30 | ~1910 |
| Julius Schmidt | Head | — | 57 | ~1883 |
| Dale Porter | Other | — | 10 | ~1930 |
| Bertha Schmidt | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Madison, Illinois
Spouse, age 32
Madison, Illinois · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Hessen |
| Mother's Birthplace | Hessen |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Madison, Illinois
Spouse, age 43
Madison, Illinois · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Madison-County, Illinois
Spouse, age 55
Madison-County, Illinois · implied b. ~1885 — 5 household members
| Surname | Schmidt |
| Given Name | Bertha E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Lebanon |
| 1935 Residence (County) | St. Clair |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Illinois |
| 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 Bertha 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
Bertha Schmidt
Spouse · 1940 · age 55 · b. ~1885 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Madison-County, Illinois
Open full size
1940 US Federal Census — Madison-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00851-00308)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hubert Ruff | 58 | Head | Laborer | Illinois |
| 2 | Frida Ruff | 49 | Wife | — | Illinois |
| 3 | Lester Ruff | 19 | Son | Truck Driver | Illinois |
| 4 | Darwin Ruff | 17 | Son | — | Illinois |
| 5 | Doris Ruff | 14 | Daughter | — | Illinois |
| 6 | Mrs. Lizzie Mueller | 72 | Head | — | Illinois |
| 7 | William Mueller | 15 | Grandson | — | Illinois |
| 8 | Virgil S. Piatt | 25 | Head | Truck Driver | Illinois |
| 9 | Martha Piatt | 22 | Wife | — | Illinois |
| 11 | Julius J. Schmidt | 57 | Head | Laborer | Illinois |
| 12 | Bertha E. Schmidt THIS PERSON | 55 | Wife | — | Illinois |
| 13 | Lucille Porter | 30 | Daughter | — | Illinois |
| 14 | Dale Porter | 10 | Grandson | — | Illinois |
| 15 | Mary Porter | 5 | Granddaughter | — | Illinois |
| 17 | Elmer O. Major | 72 | Head | Proprietor | Illinois |
| 18 | Bertha Major | 43 | Wife | — | Colorado |
| 19 | Duane Major | 16 | Son | — | Illinois |
| 20 | Fred G. Goss | 59 | Head | Proprietor | Illinois |
| 21 | Bertha Goss | 57 | Wife | — | Illinois |
| 22 | Emelia E. Tiedemann | 56 | Head | — | Illinois |
| 23 | Eubline E. Jesse | 72 | Head | — | Illinois |
| 24 | Arthur R. Baer | 52 | Head | Undertaker | Illinois |
| 25 | Margaret Baer | 52 | Wife | — | Illinois |
| 26 | Geraldine Shirley Baer | 22 | Daughter | — | Illinois |
| 27 | Mary Baer | 77 | Mother | Retired | Illinois |
| 28 | Daniel Tibbet | 77 | Head | Laborer | Illinois |
| 29 | Florence O. Tibbet | 42 | Wife | — | Illinois |
| 30 | Elmer Tibbet | 36 | Brother | Laborer | Illinois |
| 31 | William S. Noll | 61 | Head | Retired | Illinois |
| 32 | Julia Noll | 54 | Wife | — | Illinois |
| 33 | Emma E. Schoeck | 65 | Head | House Keeping And Washing | Illinois |
| 34 | Leo Daniels | 44 | Head | Teacher | Illinois |
| 35 | Mabel Daniels | 37 | Wife | — | Illinois |
| 36 | Nelda Daniels | 18 | Daughter | — | Illinois |
| 37 | Alby Daniels | 15 | Son | — | Illinois |
| 38 | Ollie Daniels | 10 | Daughter | — | Illinois |
| 39 | G. C. Kilby | 52 | Head | Telegraph Operator | Missouri |
| 40 | Florence O. Kilby | 44 | Wife | — | 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)