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Bertha Schmidt — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Illinois
Our Model Tree links this Bertha Schmidt across the 1920, 1930 and 1940 US Censuses in Marion-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 4-person household.
Age 44
b. ~1896
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Illinois |
| Surname | Schmidt |
| Given Name | Bertha R. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Centralia City |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Centralia City |
| Est. Birth Year | ~1896 |
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 Bertha | Age | Birth yr |
|---|---|---|---|---|
| Jacob Schmidt | Head | — | 49 | ~1891 |
| Bertha Schmidt | Spouse | — | 44 | ~1896 |
| Howard Schmidt | Son | — | 20 | ~1920 |
| Helen Schmidt | Daughter | — | 26 | ~1914 |
Census Appearances
1920
Marion, Illinois
Spouse, age 24
Marion, Illinois · implied b. ~1896 — 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 | 24 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Illinois
Spouse, age 34
Marion, Illinois · implied b. ~1896 — 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 | 34 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Illinois
Spouse, age 44
Marion-County, Illinois · implied b. ~1896 — 4 household members
| Surname | Schmidt |
| Given Name | Bertha R. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Centralia City |
| 1935 Residence (County) | Marion |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 44 · b. ~1896 · 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 — Marion-County, Illinois
Open full size
1940 US Federal Census — Marion-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00852-00225)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Lyle Bohannon | 14 | Nephew | — | Illinois |
| 2 | Jessie E. Bohannon | 11 | Nephew | — | Illinois |
| 3 | Adam Bretzer | 71 | Lodger | — | Ohio |
| 4 | Geo. D. Harrell | 23 | Head | Laborer | Oklahoma |
| 5 | Effie L. Harrell | 23 | Wife | — | Arkansas |
| 6 | Eugene V. Swanson | 8 | Son | — | Oklahoma |
| 7 | Geo. D. Keckling | 42 | Head | Machinist | Illinois |
| 8 | La Donna R. Keckling | 23 | Wife | — | Illinois |
| 9 | Geo. D. Jr. Keckling | 14 | Son | — | Illinois |
| 10 | James E. Dunbar | 68 | Head | — | Illinois |
| 11 | Josephine Dunbar | 63 | Wife | — | Illinois |
| 12 | Jennie E. Agerstong | 31 | Daughter | Secretary | Illinois |
| 13 | Helmer P. K. Agerstong | 58 | Son-in-law | Physician | Norway |
| 14 | James A. Agerstong | 12 | Grand-son | — | Illinois |
| 15 | Helmer P. K. Jr. Agerstong | 10 | Grand-son | — | Illinois |
| 16 | James L. Keen | 23 | Lodger | Mgr. Parts Dept. | Illinois |
| 17 | 22-1940 April | None | — | — | — |
| 18 | Jacob F. Schmidt | 49 | Head | Driller | Indiana |
| 19 | Bertha R. Schmidt THIS PERSON | 44 | Wife | — | Indiana |
| 20 | Helen E. Schmidt | 26 | Daughter | Enrobing Dept | Illinois |
| 21 | Howard D. Schmidt | 20 | Son | — | Illinois |
| 22 | Truman A. Neideffer | 32 | Head | Odd Jobs | Illinois |
| 23 | Ruth B. Neideffer | 39 | Wife | — | Illinois |
| 24 | Mary H. Neideffer | 10 | Daughter | — | Illinois |
| 25 | Wahl T. Neideffer | 8 | Son | — | Illinois |
| 26 | Leonard D. Neideffer | 2 | Son | — | Illinois |
| 27 | Edwin Perry | 48 | Head | Driller | Illinois |
| 28 | Ruby Perry | 35 | Wife | — | Oklahoma |
| 29 | W. R. Perry | 14 | Son | — | Oklahoma |
| 30 | Robt. Shock | 37 | Head | Laborer | Oklahoma |
| 31 | Roy L. Parker | 30 | Head | Driller | Tennessee |
| 32 | Claudie L. Parker | 34 | Wife | — | Texas |
| 33 | Arnold G. Brown | 20 | Step-son | Cook | Texas |
| 34 | Luther R. Brown | 17 | Step-son | Attendant | Texas |
| 35 | James N. Marcum | 32 | Head | Boiler Maker Helper | Illinois |
| 36 | Opal B. Marcum | 31 | Wife | Fancy Stitcher | Illinois |
| 37 | Cullen M. Boyd | 26 | Head | Laborer | Texas |
| 38 | Doris J. Boyd | 21 | Wife | — | Texas |
| 39 | Calvin M. Boyd | 2 | Son | — | Texas |
| 40 | Clara Muckelberry | 48 | Head | Lodging House | 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)