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Joseph Mayer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Joseph Mayer across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Thomas & Effie — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Mayer |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Perry |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Hardener |
| Industry | Steel car manufacture |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1250 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Hardener |
| Township / Ward | Perry |
| Est. Birth Year | ~1914 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Effie Mayer | Spouse | — | 64 | ~1876 |
| Thomas Mayer | Head | — | 67 | ~1873 |
| Joseph Mayer | Son | — | 26 | ~1914 |
| Annabelle Mayer | Other | — | 24 | ~1916 |
| Carolyn Mayer | Other | — | 1 | ~1939 |
Census Appearances
1920
Marion, Indiana
Son, age 5
Marion, Indiana · implied b. ~1915 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | Joseph F. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 16
Marion, Indiana · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Son, age 26
Marion-County, Indiana · implied b. ~1914 — 5 household members
| Surname | Mayer |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Perry |
| 1935 Residence (County) | Marion |
| Occupation | Hardener |
| Industry | Steel car manufacture |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1250 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Joseph Mayer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Mayer (~0.92 confidence) and mother Effie Mayer (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Mayer
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Effie Mayer
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Mayer
Son · 1940 · age 26 · b. ~1914 · Indiana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01075-00958)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Etola Sturm | 80 | Head | — | Indiana |
| 42 | Edward Laupher | 64 | Head | Carpenter | Indiana |
| 43 | Ida A Laupher | 61 | Wife | — | Indiana |
| 44 | Wilbur Laupher | 33 | Head | Carpenter | Indiana |
| 45 | Helen @ Laupher | 29 | Wife | — | Kentucky |
| 46 | Betty Laupher | 5 | Daughter | — | Indiana |
| 47 | James E Laupher | 3 | Son | — | Indiana |
| 48 | Herman Johnson | 34 | Head | Body Builder | Kentucky |
| 49 | Julia Johnson | 32 | Wife | — | Kentucky |
| 50 | Alvin Johnson | 12 | Son | — | Indiana |
| 51 | Arthella Johnson | 9 | Daughter | — | Indiana |
| 52 | Wilbur R Johnson | 6 | Son | — | Indiana |
| 53 | Thomas Mayer | 67 | Head | Gardener | Indiana |
| 54 | Effie Mayer | 64 | Wife | — | Indiana |
| 55 | Joseph Mayer THIS PERSON | 26 | Son | Hardener | Indiana |
| 56 | Annabelle Mayer | 24 | Daughter-in-law | — | Indiana |
| 57 | Carolyn A Mayer | 1 | Granddaughter | — | Indiana |
| 58 | Floyd Sanders | 41 | Head | Farm Manager | Kentucky |
| 59 | Beulah N Sanders | 40 | Wife | — | Kentucky |
| 60 | Joseph H Sanders | 18 | Son | Farm Laborer | Kentucky |
| 61 | Thelma R Sanders | 16 | Daughter | — | Kentucky |
| 62 | Sarah E Sanders | 14 | Daughter | — | Kentucky |
| 63 | Floyd M Sanders | 12 | Son | — | Kentucky |
| 64 | Chas V Armstrong | 29 | Head | Foreman | Indiana |
| 65 | Mabel R Armstrong | 27 | Wife | — | Indiana |
| 66 | Ellen Armstrong | 10 | Daughter | — | Indiana |
| 67 | Harry Armstrong | 8 | Son | — | Indiana |
| 68 | John Armstrong | 65 | Father | Farmer | Indiana |
| 69 | Eleanor Halscheuer | 13 | Lodger | — | Indiana |
| 70 | Edward Chew | 62 | Head | Farmer | Indiana |
| 71 | Vesta Chew | 54 | Wife | — | Indiana |
| 72 | E Frank Mize | 29 | Head | Farm Hand | Kentucky |
| 73 | Addie Mize | 61 | Mother | — | Kentucky |
| 74 | Lloyd J Mize | 16 | Brother | Farm Hand | Kentucky |
| 75 | Irvie Leonard | 63 | Head | Farmer | Indiana |
| 76 | Lillie Leonard | 59 | Wife | — | Indiana |
| 77 | Hester Leonard | 32 | Daughter | — | Indiana |
| 78 | Paul Fort | 32 | Son-in-law | Clerk Warehouse | Indiana |
| 79 | Vernice Fort | 25 | Daughter | — | Indiana |
| 80 | Irvie L Fort | 3 | Grandson | — | Indiana |
Pedigree Summary
Joseph
Gen 1 · 2 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)