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Mary Mayer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this Mary Mayer across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents William & Mary — first a daughter (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Mayer |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Music teacher |
| Industry | Own Home |
| Class of Worker | NP |
| Hours Worked | 18 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Teacher |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1916 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mayer | Daughter | — | 24 | ~1916 |
| William Mayer | Head | — | 61 | ~1879 |
| Elmora Mayer | Other | — | 50 | ~1890 |
| Scott Mayer | Other | — | 45 | ~1895 |
| William Mayer | Son | — | 23 | ~1917 |
| Mary Mayer | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Jefferson, Kentucky
Daughter, age 4
Jefferson, Kentucky · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
Daughter, age 15
Jefferson, Kentucky · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Meyer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Daughter, age 24
Jefferson-County, Kentucky · implied b. ~1916 — 6 household members
| Surname | Mayer |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Occupation | Music teacher |
| Industry | Own Home |
| Class of Worker | NP |
| Hours Worked | 18 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Mayer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Mayer (~0.92 confidence) and mother Mary Mayer (~0.92 confidence) and mother Mary Mayer (~0.92 confidence) and father William Mayer (~0.92 confidence) and mother Catherine Meyer (~0.92 confidence) and father Leo Meyer (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Mayer
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mary Mayer
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Mary Mayer
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
William Mayer
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Catherine Meyer
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Leo Meyer
b. ~1891
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Mayer
Daughter · 1940 · age 24 · b. ~1916 · Kentucky
★ You are viewing this record
Sibling
William Mayer
Sibling · 1940 · age 23
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-t0627-01366-00361)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Norbert Paulin | 17 | Son | Apprentice Clerk | Kentucky |
| 42 | Mary Paulin | 16 | Daughter | — | Kentucky |
| 43 | Robert Paulin | 10 | Son | — | Kentucky |
| 44 | Janet Paulin | 8 | Daughter | — | Kentucky |
| 45 | Albert Reis | 38 | Head | Painter | Kentucky |
| 46 | Viola Reis | 37 | Wife | Housework | Kentucky |
| 47 | Evelyn Reis | 17 | Daughter | — | Kentucky |
| 48 | John Tondergild | 58 | Head | Turn Key | Kentucky |
| 49 | Mary Tondergild | 60 | Sister | Clerk | Kentucky |
| 50 | Frank Fultz | 36 | Head | Monotype Operator | Kentucky |
| 51 | Mary Lee Fultz | 32 | Wife | Housework | Kentucky |
| 52 | William F. Mayer | 61 | Head | Retail Furniture | Kentucky |
| 53 | Mary Mayer | 60 | Wife | Housework | Kentucky |
| 54 | Mary E. Mayer THIS PERSON | 24 | Daughter | Music Teacher | Kentucky |
| 55 | William F. Jr. Mayer | 23 | Son | Operator Silver | Kentucky |
| 56 | Scott R. Mayer | 45 | Brother | Furniture Salesman | Kentucky |
| 57 | Elmora Mayer | 50 | Sister | Housekeeper | Kentucky |
| 58 | William Scharfenberger | 72 | Head | Labor | Kentucky |
| 59 | Elizabeth Scharfenberger | 73 | Wife | Housework | Indiana |
| 60 | Mary Kemble | 32 | Daughter | New Worker | Kentucky |
| 61 | Charles Jr. Kemble | 11 | Grandson | — | Kentucky |
| 62 | Rose Oberle | 62 | Head | Housekeeper | Kentucky |
| 63 | Anne Oberle | 40 | Sister | Inspector | Kentucky |
| 64 | Rose Lee Daugherty | 27 | Niece | Lithograph | Kentucky |
| 65 | Henry Zenner | 41 | Head | Butcher | Kentucky |
| 66 | Louise Zenner | 40 | Wife | Housekeeper | Kentucky |
| 67 | Mildred Zenner | 18 | Daughter | Nursemaid | Kentucky |
| 68 | Charles Tierling | 72 | Head | Retired | Germany |
| 69 | Carl Tierling | 38 | Son | Machinist | Kentucky |
| 70 | Myrtle Tierling | 40 | Daughter-in-law | Housekeeper | Kentucky |
| 71 | Ed Jane Tierling | 20 | Granddaughter | Stenographer | Kentucky |
| 72 | Evelyn Tierling | 14 | Granddaughter | — | Kentucky |
| 73 | Carl Tierling | 5 | Grandson | — | Kentucky |
| 74 | Emma Jaeger | 58 | Head | Housekeeper | Kentucky |
| 75 | Andy Webb | 65 | Lodger | Labor | Kentucky |
| 76 | Earnest Straub | 38 | Head | Contractor | Kentucky |
| 77 | Carrie Straub | 31 | Wife | Housekeeper | Kentucky |
| 78 | Ernestine Straub | 14 | Daughter | — | Kentucky |
| 79 | Charles Straub | 12 | Son | — | Kentucky |
| 80 | Carolyn Straub | 9 | Daughter | — | Kentucky |
Related Census Records
Pedigree Summary
Mary + 1 sibling
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)