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Mary Brewer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Mary Brewer across the 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Brewer |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Louisville |
| Est. Birth Year | ~1921 |
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 |
|---|---|---|---|---|
| Robert Brewer | Son | — | 16 | ~1924 |
| Gerald Brewer | Son | — | 10 | ~1930 |
| C Brewer | Son | — | 21 | ~1919 |
| Henry Brewer | Head | — | 48 | ~1892 |
| Mary Brewer | Daughter | — | 19 | ~1921 |
| Mary Brewer | Daughter | — | 8 | ~1932 |
| Mary Brewer | Spouse | — | 47 | ~1893 |
| Therese Brewer | Daughter | — | 9 | ~1931 |
| Virginia Brewer | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Jefferson, Kentucky
Daughter, age 9
Jefferson, Kentucky · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brewer |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Daughter, age 19
Jefferson-County, Kentucky · implied b. ~1921 — 9 household members
| Surname | Brewer |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville |
| 1935 Residence (County) | Jefferson |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Brewer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Brewer
Daughter · 1940 · age 19 · b. ~1921 · Kentucky
★ You are viewing this record
Sibling
Virginia Brewer
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
C Brewer
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Brewer
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Brewer
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Therese Brewer
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Brewer
Sibling · 1940 · age 8
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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01366-00998)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florence S. Whelan | 38 | Wife | — | Kentucky |
| 2 | James E. Whelan | 4 | Son | — | Kentucky |
| 3 | Mary Susan Whelan | 1 | Daughter | — | Kentucky |
| 4 | Edward L. Moll | 64 | Head | Contractor | Kansas |
| 5 | Elizabeth A. Moll | 64 | Wife | — | Kentucky |
| 6 | Mary A. Moll | 30 | Daughter | Stenographer | Kentucky |
| 7 | Frank T. Caummisar | 58 | Head | Salesman | Kentucky |
| 8 | Rose T. Caummisar | 57 | Wife | — | Indiana |
| 9 | Mildred A. Caummisar | 32 | Daughter | Teacher | Kentucky |
| 10 | Basil P. Caummisar | 24 | Son | Circulation Manager | Kentucky |
| 11 | Earl S. Caummisar | 21 | Son | Civil Engineer | Kentucky |
| 12 | Henry E. Brewer | 48 | Head | Secretary | Kentucky |
| 13 | Mary B. Brewer | 47 | Wife | — | Kentucky |
| 14 | C. Eugene Brewer | 21 | Son | Estimator | Kentucky |
| 15 | Mary E. Brewer THIS PERSON | 19 | Daughter | — | Kentucky |
| 16 | Robert J. Brewer | 16 | Son | — | Kentucky |
| 17 | Virginia A. Brewer | 14 | Daughter | — | Kentucky |
| 18 | Gerald F. Brewer | 10 | Son | — | Kentucky |
| 19 | Therese L. Brewer | 9 | Daughter | — | Kentucky |
| 20 | Mary J. Brewer | 8 | Daughter | — | Kentucky |
| 21 | Helen C. Bowling | 47 | Head | Contractor | Kentucky |
| 22 | Mary E. Bowling | 23 | Daughter | Clerk | Kentucky |
| 23 | Martha N. Bowling | 21 | Daughter | Teacher | Kentucky |
| 24 | James E. Bowling | 20 | Son | Manager | Kentucky |
| 25 | Bernard F. Bowling | 17 | Son | — | Kentucky |
| 26 | Theodore B. Bowling | 15 | Son | — | Kentucky |
| 27 | Joseph S. Bowling | 10 | Son | — | Kentucky |
| 28 | Elmer Beck | 41 | Head | Plant Manager | Kentucky |
| 29 | Elizabeth W. Beck | 40 | Wife | — | Kentucky |
| 30 | Nancy J. Beck | 15 | Daughter | — | Kentucky |
| 31 | Fred A. Gnadinger | 55 | Head | Department Manager | Kentucky |
| 32 | Henrietta A. Gnadinger | 49 | Wife | — | Kentucky |
| 33 | Bette C. Gnadinger | 24 | Daughter | Stenographer | Ohio |
| 34 | Leo J. Bohn | 35 | Son-in-law | Clerk | Kentucky |
| 35 | Marie C. Bohn | 32 | Daughter | Bookkeeper | Indiana |
| 36 | Robert J. Gocke | 46 | Head | Electrician | Kentucky |
| 37 | Marian S. Gocke | 36 | Wife | — | Kentucky |
| 38 | Charles L. Keegan | 41 | Head | Clerk | Kentucky |
| 39 | Nora M. Keegan | 48 | Wife | — | Kentucky |
| 40 | Charles M. Keegan | 22 | Son | Clerk | Kentucky |
Related Census Records
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)