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John Mayer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this John Mayer across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents Bessie & Anna — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Mayer |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Jockey |
| Industry | Stable |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Jockey |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1917 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Bessie Mayer | Head | — | 51 | ~1889 |
| George Mayer | Son | — | 15 | ~1925 |
| John Mayer | Son | — | 23 | ~1917 |
| Robert Mayer | Son | — | 26 | ~1914 |
Census Appearances
Son, age 1
Jefferson, Kentucky · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Meyers |
| Given Name | John L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
Son, age 12
Jefferson, Kentucky · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Meyer |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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
Son, age 23
Jefferson-County, Kentucky · implied b. ~1917 — 4 household members
| Surname | Mayer |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| 1935 Residence (County) | Jefferson |
| Occupation | Jockey |
| Industry | Stable |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 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 John Mayer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Bessie Mayer (~0.92 confidence) and mother Anna Meyers (~0.92 confidence) and father John Meyers (~0.92 confidence) and father John Meyer (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Bessie Mayer
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Anna Meyers
b. ~1894
Source mother
● Household
· direct · ~0.92
Father
John Meyers
b. ~1894
Source father
● Household
· direct · ~0.92
Father
John Meyer
b. ~1899
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Mayer
Son · 1940 · age 23 · b. ~1917 · Kentucky
★ You are viewing this record
Sibling
George Mayer
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mayer
Sibling · 1940 · age 26
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-t0627-01369-00298)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James T. Marshall | 25 | Lodger | Shipping Clerk | Kentucky |
| 2 | Donald H. Mckenna | 27 | Lodger | Truck Driver | North Carolina |
| 3 | Joseph Pruitt | 25 | Head | Salesman | Kansas |
| 4 | Lucille Pruitt | 24 | Wife | Social Worker | Kentucky |
| 5 | Clint Smith | 52 | Head | Carpenter | Kentucky |
| 6 | Annabell Smith | 51 | Wife | — | Kentucky |
| 7 | Florence Smith | 28 | Daughter | Stenographer | Kentucky |
| 8 | Lee Smith | 25 | Son | Accountant | Kentucky |
| 9 | Anna Laura Smith | 23 | Daughter | — | Kentucky |
| 10 | Mary E. Smith | 20 | Daughter | — | Kentucky |
| 11 | Philip Smith | 18 | Son | — | Kentucky |
| 12 | James M. Smith | 16 | Son | — | Kentucky |
| 13 | Maurice Smith | 13 | Son | — | Kentucky |
| 14 | Bessie Mayer | 51 | Head | — | Kentucky |
| 15 | Robert L. Mayer | 26 | Son | Printer | Kentucky |
| 16 | John A. Mayer THIS PERSON | 23 | Son | Jockey | Kentucky |
| 17 | George F. Mayer | 15 | Son | — | Kentucky |
| 18 | Lucille E. Luce | 58 | Head | — | Indiana |
| 19 | Barbara Shafer | 24 | Head | Helper | Kentucky |
| 20 | Maggie Shafer | 24 | Wife | — | Kentucky |
| 21 | Mildred Jackson | 24 | Head | Beautician | Kentucky |
| 22 | Arretta Jasper | 21 | Lodger | Beautician | Kentucky |
| 23 | William G. Myers | 71 | Head | Salesman | Kentucky |
| 24 | Joseph S. Myers | 39 | Son | Clerk | Indiana |
| 25 | Evelyn C. Myers | 36 | Daughter-in-law | — | Kentucky |
| 26 | Florence Boulware | 40 | Head | Switchboard Operator | Kentucky |
| 27 | Marcus M. Boulware | 16 | Son | — | Kentucky |
| 28 | Perry Duncan | 25 | Head | Salesman | Pennsylvania |
| 29 | Rosalie Duncan | 22 | Wife | Receptionist | Kentucky |
| 30 | Charles W. Hayes | 24 | Head | Internal Revenue | Kentucky |
| 31 | Mary H. Hayes | 23 | Wife | Sales Lady | Kentucky |
| 32 | Robert B. Robertson | 60 | Head | Chief Clerk | Alabama |
| 33 | Pauline J. Robertson | 54 | Wife | — | Alabama |
| 34 | James O'Brien | 23 | Head | Steward | Kentucky |
| 35 | Olive O'Brien | 50 | Wife | — | Indiana |
| 36 | Anna Waitz | 65 | Head | Superintendent | Kentucky |
| 37 | Bertha Fryer | 59 | Head | Cook | Illinois |
| 38 | Ruth Bush | 42 | Head | Nurse | Kentucky |
| 39 | Sarah Ruby Emerson | 40 | Head | Nurse | Indiana |
| 40 | Laura Lee Eller | 52 | Head | Assistant Cook | Kentucky |
Related Census Records
Pedigree Summary
John + 2 siblings
Gen 1 · 4 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)