MF
Mary Fischer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this Mary Fischer across the 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 8-person household.
Age 14
b. ~1926
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Fischer |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Normandy Township |
| Est. Birth Year | ~1926 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Caroline Day | Other | — | 54 | ~1886 |
| John Fischer | Son | — | 14 | ~1926 |
| George Fischer | Son | — | 9 | ~1931 |
| Margaret Fischer | Daughter | — | 17 | ~1923 |
| Edward Fischer | Son | — | 21 | ~1919 |
| Frank Fischer | Head | — | 51 | ~1889 |
| Anna Fischer | Spouse | — | 51 | ~1889 |
| Mary Fischer | Daughter | — | 14 | ~1926 |
Census Appearances
1930
St Louis, …
Daughter, age 4
St Louis, Missouri · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Daughter, age 14
St.-Louis-County, Missouri · implied b. ~1926 — 8 household members
| Surname | Fischer |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis |
| 1935 Residence (County) | St. Louis |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Fischer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Fischer
Daughter · 1940 · age 14 · b. ~1926 · Missouri
★ You are viewing this record
Sibling
John Fischer
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Fischer
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Fischer
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Fischer
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Louis-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-County, Missouri
Page Contents
34 people indexed on this census page (nara:1940:m-t0627-02152-00887)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | M. Christman | 33 | Wife | — | Missouri |
| 2 | Walter J. Christman | 11 | Son | — | Missouri |
| 3 | Verondia Miller | 70 | Mother in law | — | Germany |
| 4 | Thomas S. Donahue | 28 | Head | Service Man | Missouri |
| 5 | Ione A. Donahue | 25 | Wife | Fire Lady | Missouri |
| 6 | Leo W. Raatman | 27 | Brother in law | Laborer | Missouri |
| 7 | James F. Moran | 67 | Head | Laborer | Illinois |
| 8 | Sadie M. Moran | 65 | Wife | — | Missouri |
| 9 | Fred A. Miller | 45 | Head | Service Man | Missouri |
| 10 | Margaret E. Miller | 42 | Wife | — | Missouri |
| 11 | Clara M. Miller | 19 | Daughter | — | Missouri |
| 12 | Mary E. Miller | 12 | Daughter | — | Missouri |
| 13 | Clarence N. Richter | 33 | Head | Meat Cutter | Missouri |
| 14 | Isabelle C. Richter | 31 | Wife | — | Missouri |
| 15 | William O. Shepard | 26 | Head | Administrative Engineer | Kansas |
| 16 | Emily J. Shepard | 24 | Wife | — | Kansas |
| 17 | Frank J. Fischer | 51 | Head | None | Missouri |
| 18 | Anna C. Fischer | 51 | Wife | — | Missouri |
| 19 | Edward Fischer | 21 | Son | Steam Fitter | Missouri |
| 20 | John J. Fischer | 14 | Son | Apprentice Steam Fitter | Missouri |
| 21 | Margaret M. Fischer | 17 | Daughter | — | Missouri |
| 22 | Mary M. Fischer THIS PERSON | 14 | Daughter | — | Missouri |
| 23 | George Fischer | 9 | Son | — | Missouri |
| 24 | Caroline Day | 54 | Sister in law | — | Missouri |
| 25 | Lillian Stroud | 66 | Head | — | Missouri |
| 26 | David Kelley | 33 | Head | Laborer | Missouri |
| 27 | Eleanore Kelley | 40 | Wife | — | Missouri |
| 28 | Ernie Heninger | 57 | Head | Manager | Illinois |
| 29 | Alice Heninger | 43 | Wife | — | Missouri |
| 30 | Donald J. Heninger | 20 | Son | — | Missouri |
| 31 | Ernie G. Heninger | 17 | Son | — | Missouri |
| 32 | Constance J. Heninger | 13 | Daughter | — | Missouri |
| 33 | Mary Alice Heninger | 11 | Daughter | — | Missouri |
| 34 | Byrne Heninger | 8 | Son | — | Missouri |
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)