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Mary Maguire — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this Mary Maguire across the 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Maguire |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St Louis |
| 1935 Residence (County) | St Louis |
| Additional Details | |
| Occupation | stenographer |
| Industry | private office |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 800 |
| Highest Grade | H-4 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Stenographer |
| Township / Ward | Clayton Twp |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Maguire | Son | — | 14 | ~1926 |
| Jack Maguire | Son | — | 23 | ~1917 |
| Clara Maguire | Spouse | — | 50 | ~1890 |
| Mary Maguire | Daughter | — | 21 | ~1919 |
| John Maguire | Head | — | 49 | ~1891 |
| Robert Maguire | Son | — | 16 | ~1924 |
| Mildred Maguire | Daughter | — | 19 | ~1921 |
Census Appearances
1930
St Louis, …
Daughter, age 10
St Louis, Missouri · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Maguire |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Daughter, age 21
St.-Louis-County, Missouri · implied b. ~1919 — 7 household members
| Surname | Maguire |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St Louis |
| 1935 Residence (County) | St Louis |
| Occupation | stenographer |
| Industry | private office |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 800 |
| Highest Grade | H-4 |
| 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 Maguire across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Maguire
Daughter · 1940 · age 21 · b. ~1919 · Missouri
★ You are viewing this record
Sibling
Jack Maguire
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Maguire
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Maguire
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Maguire
Sibling · 1940 · age 19
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-t0627-02149-00334)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Maguire | 49 | Head | Credit Clerk | Missouri |
| 2 | Clara Maguire | 50 | Wife | None | Missouri |
| 3 | Jack Maguire | 23 | Son | Shipping Clerk | Missouri |
| 4 | Mary Maguire THIS PERSON | 21 | Daughter | Stenographer | Missouri |
| 5 | Mildred Maguire | 19 | Daughter | None | Missouri |
| 6 | Robert Maguire | 16 | Son | None | Missouri |
| 7 | Thomas Maguire | 14 | Son | None | Missouri |
| 8 | Clinton Corless | 53 | Head | Repair Man | Missouri |
| 9 | Sytha Corless | 52 | Wife | None | Missouri |
| 10 | Virgil Corless | 10 | Son | None | Missouri |
| 11 | Donald Hartnett | 28 | Head | Clerk | Missouri |
| 12 | Ruth Hartnett | 31 | Wife | Secretary | Missouri |
| 13 | — | None | — | — | — |
| 14 | D. Rome Story | 34 | Head | Teller | Colorado |
| 15 | Elizabeth Story | 31 | Wife | Clerk | Missouri |
| 16 | Rebecca Mayes | 63 | Mother-in-law | None | Missouri |
| 17 | William Maginn | 41 | Head | Lawyer | Missouri |
| 18 | Mary Maginn | 29 | Wife | None | Missouri |
| 19 | Edward Heitz | 55 | Head | Flower Culture | Missouri |
| 20 | Rose E. Heitz | 55 | Wife | None | Illinois |
| 21 | John Vickroy | 33 | Head | Book-Keeper | Missouri |
| 22 | Mable Vickroy | 33 | Wife | None | Missouri |
| 23 | Ernest Graeser | 49 | Head | Plumber | Missouri |
| 24 | Frances Graeser | 50 | Wife | None | Missouri |
| 25 | Ernest Graeser | 20 | Son | Helper | Missouri |
| 26 | Gloria Graeser | 18 | Daughter | Beauty Operator | Missouri |
| 27 | George Graeser | 17 | Son | None | Missouri |
| 28 | Betty Jane Graeser | 13 | Daughter | None | Missouri |
| 29 | James Graeser | 4 | Son | None | Missouri |
| 30 | Theodore Graeser | 3 | Son | None | Missouri |
| 31 | Donald Graeser | 1 | Son | None | Missouri |
| 32 | Ernest C. Graeser | 68 | Head | Carpenter | Missouri |
| 33 | Louise Graeser | 64 | Wife | None | Missouri |
| 34 | Arthur Rudloff | 30 | Son-in-law | Plasterer | Missouri |
| 35 | Mae Rudloff | 27 | Daughter | None | Missouri |
| 36 | Frank Fager | 56 | Head | Farmer | Missouri |
| 37 | Lena Fager | 49 | Wife | None | Missouri |
| 38 | Raymond Fager | 10 | Son | None | Missouri |
| 39 | Irvin Eubanks | 24 | Hired hand | Hired Help | Missouri |
| 40 | Irving Leitzow | 18 | Hired hand | Hired Help | 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)