MH
Mary Haas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this Mary Haas across the 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 5-person household.
Age 13
b. ~1927
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Haas |
| Given Name | Mary Rose |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Gravois Twp. |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Gravois Twp |
| Est. Birth Year | ~1927 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Erwin Haas | Head | — | 38 | ~1902 |
| Marie Haas | Spouse | — | 36 | ~1904 |
| Dorothy Haas | Daughter | — | 5 | ~1935 |
| Mary Haas | Daughter | — | 13 | ~1927 |
| Louise Haas | Daughter | — | 12 | ~1928 |
Census Appearances
1930
St Louis, …
Daughter, age 3
St Louis, Missouri · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hass |
| Given Name | Mary Rose |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| 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 13
St.-Louis-County, Missouri · implied b. ~1927 — 5 household members
| Surname | Haas |
| Given Name | Mary Rose |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Gravois Twp. |
| 1935 Residence (County) | St. Louis |
| Highest Grade | 7 |
| 1935 Residence | Same house |
| 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 Haas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Haas
Daughter · 1940 · age 13 · b. ~1927 · Missouri
★ You are viewing this record
Sibling
Dorothy Haas
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Haas
Sibling · 1940 · age 12
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
40 people indexed on this census page (nara:1940:m-t0627-02150-00092)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Erwin Haas | 38 | Head | Laborer | Missouri |
| 2 | Marie Haas | 36 | Wife | — | Missouri |
| 3 | Mary Rose Haas THIS PERSON | 13 | Daughter | — | Missouri |
| 4 | Louise Haas | 12 | Daughter | — | Missouri |
| 5 | Dorothy Haas | 5 | Daughter | — | Missouri |
| 6 | Clifford W. Ashwell | 28 | Head | Trooper | Missouri |
| 7 | Elsie A. Ashwell | 24 | Wife | — | Missouri |
| 8 | Albert J. Ashwell | 56 | Father | Clerk | Missouri |
| 9 | Shelby Britton | Briton | 41 | Head | Mechanic | Missouri |
| 10 | Ruth Britton | Briton | 43 | Wife | — | Missouri |
| 11 | Edna Folk | 21 | Lodger | Waitress | Missouri |
| 12 | Donald Folk | 2 | Son | — | Missouri |
| 13 | James Pounds | 50 | Head | Dairy Man | Missouri |
| 14 | Martha Pounds | 49 | Wife | — | Missouri |
| 15 | Lloyd Pounds | 24 | Son | Stock Clerk | Missouri |
| 16 | Edward Ahlemeyer | 47 | Head | Laborer | Farmer | Missouri |
| 17 | Anna Ahlemeyer | 59 | Wife | — | Missouri |
| 18 | Edward Jr. Ahlemeyer | 19 | Son | Laborer | Missouri |
| 19 | Herman Ahlemeyer | 17 | Son | Laborer | Missouri |
| 20 | Raymond Ahlemeyer | 13 | Son | — | Missouri |
| 21 | Mary Anne Ahlemeyer | 7 | Daughter | — | Missouri |
| 22 | Joseph Bahr | 81 | Head | — | Germany |
| 23 | Sophie Bahr | 74 | Wife | — | Germany |
| 24 | Christian Bruecking | 40 | Head | Ice & Coal Dealer | Missouri |
| 25 | Clara Bruecking | 39 | Wife | — | Missouri |
| 26 | Lucille Bruecking | 15 | Daughter | — | Missouri |
| 27 | William Doerr | 42 | Head | Truck Gardener | Missouri |
| 28 | Clair Doerr | 25 | Wife | — | Missouri |
| 29 | William Jr. Doerr | 16 | Son | Laborer | Missouri |
| 30 | Alvin Doerr | 2 | Son | — | Missouri |
| 31 | William F. La Rose | 45 | Head | Landscaper | Gardener | Missouri |
| 32 | Willa La Rose | 43 | Wife | — | Missouri |
| 33 | Evelyn La Rose | 19 | Daughter | — | Missouri |
| 34 | William Foley | 56 | Head | Switchman | Missouri |
| 35 | Elsie Foley | 44 | Wife | — | Missouri |
| 36 | Charles W. Foley | 18 | Son | New Worker | Missouri |
| 37 | Edward C. Sheppard | 47 | Head | Truck Gardener | Missouri |
| 38 | Ruth Sheppard | 46 | Wife | — | Missouri |
| 39 | Charles T. Sheppard | 20 | Son | Laborer | Missouri |
| 40 | Helen Francis Sheppard | 18 | Daughter | Clerk | 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)