MD
Mary Downey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this Mary Downey across the 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Downey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Lemay Township |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Lemay Township |
| Est. Birth Year | ~1929 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Downey | Daughter | — | 11 | ~1929 |
| Agnes Downey | Spouse | — | 35 | ~1905 |
| Geraldine Downey | Daughter | — | 14 | ~1926 |
| Forrest Downey | Son | — | 10 | ~1930 |
| Eugene Downey | Son | — | 5 | ~1935 |
| Ardell Downey | Daughter | — | 9 | ~1931 |
| Richard Downey | Son | — | 8 | ~1932 |
| Forrest Downey | Head | — | 34 | ~1906 |
| Robert Downey | Son | — | 2 | ~1938 |
Census Appearances
1930
St Louis, …
Daughter, age 1
St Louis, Missouri · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Downey |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Illinois |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Daughter, age 11
St.-Louis-County, Missouri · implied b. ~1929 — 9 household members
| Surname | Downey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Lemay Township |
| 1935 Residence (County) | St. Louis |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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 Downey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Downey
Daughter · 1940 · age 11 · b. ~1929 · Missouri
★ You are viewing this record
Sibling
Geraldine Downey
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Forrest Downey
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Downey
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Downey
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Downey
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ardell Downey
Sibling · 1940 · age 9
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-t0627-02151-00273)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Leist | 48 | Son | Laborer | Wisconsin |
| 42 | Ludwig Leist | 39 | Son | Laborer | Missouri |
| 43 | Elmer Marshall | 23 | Hired-man | Laborer | Missouri |
| 44 | Forrest C. Downey | 34 | Head | Machine Operator | Missouri |
| 45 | Agnes Downey | 35 | Wife | — | Illinois |
| 46 | Geraldine Downey | 14 | Daughter | — | Missouri |
| 47 | Mary Downey THIS PERSON | 11 | Daughter | — | Missouri |
| 48 | Forrest Downey | 10 | Son | — | Missouri |
| 49 | Ardell Downey | 9 | Daughter | — | Missouri |
| 50 | Richard Downey | 8 | Son | — | Missouri |
| 51 | Eugene Downey | 5 | Son | — | Missouri |
| 52 | Robert Downey | 2 | Son | — | Missouri |
| 53 | John L. Busler | 36 | Head | Moulder | Missouri |
| 54 | Ida Mae Busler | 32 | Wife | — | Missouri |
| 55 | Frank H. Busler | 34 | Brother | Shipping Clerk | Missouri |
| 56 | Chester Eikman | 33 | Head | Janitor | Missouri |
| 57 | Alma Eikman | 26 | Wife | — | Texas |
| 58 | Ruby Ann Eikman | 8 | Daughter | — | Missouri |
| 59 | Jane Eikman | 5 | Daughter | — | Missouri |
| 60 | Carol Eikman | 3 | Daughter | — | Missouri |
| 61 | Doris Eikman | 1 | Daughter | — | Missouri |
| 62 | Harry Eikman | 58 | Head | Farmer | Missouri |
| 63 | Caroline Eikman | 52 | Wife | Laborer | Illinois |
| 64 | Amanda Eikman | 28 | Daughter | Teacher | Missouri |
| 65 | Anton Guth | 53 | Head | Sausage Maker | Rumania |
| 66 | Margaret Guth | 43 | Wife | — | Rumania |
| 67 | Edmond D. Stroh | 41 | Head | Accountant | Illinois |
| 68 | Claire Mae Stroh | 40 | Wife | — | Missouri |
| 69 | Jane Frances Stroh | 14 | Daughter | — | Missouri |
| 70 | Samuel E. Cracelius | 45 | Head | Maintenance Electrician | Missouri |
| 71 | Amelia E. Cracelius | 49 | Wife | — | Missouri |
| 72 | Melvin H. Cracelius | 22 | Head | Farmer | Missouri |
| 73 | Virginia I. Cracelius | 23 | Wife | — | Missouri |
| 74 | Melvin H. Jr. Cracelius | 2 | Son | — | Missouri |
| 75 | Henry A. Bertholdt | 53 | Head | Reconditioning Supervisor | Missouri |
| 76 | Edna L. Bertholdt | 45 | Wife | — | Missouri |
| 77 | Louis J. Geitz | 44 | Head | Farmer | Missouri |
| 78 | Clara Geitz | 34 | Wife | Laborer | Missouri |
| 79 | Alfred H. Geitz | 6 | Son | — | Missouri |
| 80 | Vester P. Geitz | 4 | 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)