JM
John Mayer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this John Mayer across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents Elizabeth & Andrew — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Mayer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Occupation | Laborer |
| Industry | Foundry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 820 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Laborer |
| Township / Ward | St Paul 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 John | Age | Birth yr |
|---|---|---|---|---|
| Irene Mayer | Daughter | — | 14 | ~1926 |
| Michael Mayer | Head | — | 51 | ~1889 |
| Michael Mayer | Son | — | 25 | ~1915 |
| John Mayer | Son | — | 24 | ~1916 |
| Charles Mayer | Son | — | 20 | ~1920 |
| Susie Mayer | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Ramsey, Minnesota
Son, age 3
Ramsey, Minnesota · implied b. ~1917 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 14
Ramsey, Minnesota · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Son, age 24
Ramsey-County, Minnesota · implied b. ~1916 — 6 household members
| Surname | Mayer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Occupation | Laborer |
| Industry | Foundry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 820 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Elizabeth Petrov (~0.92 confidence) and father Andrew Mayer (~0.92 confidence) and father Michael Mayer (~0.92 confidence) and father Moses Mayer (~0.92 confidence) and mother Susanna Mayer (~0.92 confidence) and mother Anna Mayer (~0.92 confidence) and mother Susie Mayer (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Petrov
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
Andrew Mayer
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Michael Mayer
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Moses Mayer
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Susanna Mayer
b. ~1897
Source mother
● Household
· direct · ~0.92
Mother
Anna Mayer
b. ~1899
Source mother
● Household
· direct · ~0.92
Mother
Susie Mayer
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mayer
Son · 1940 · age 24 · b. ~1916 · Minnesota
★ You are viewing this record
Sibling
Charles Mayer
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Mayer
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Mayer
Sibling · 1940 · age 25
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 — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02004-00113)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Verdig | 67 | Head | — | Wisconsin |
| 42 | Theodore Kozak | 45 | Head | Stoker | Minnesota |
| 43 | Margaret Kozak | 40 | Wife | — | Minnesota |
| 44 | Joseph Beauchaine | 67 | Head | — | South Dakota |
| 45 | Margaret Beauchaine | 61 | Wife | — | Minnesota |
| 46 | Margaret Sandhoffer | 33 | Daughter | Clerk | Minnesota |
| 47 | Graven Sandhoffer | 13 | Grandson | — | Minnesota |
| 48 | Frank Gravelle | 49 | Head | Cabinet Maker | Norway |
| 49 | Christine Gravelle | 50 | Wife | — | Norway |
| 50 | Gladys Gravelle | 23 | Daughter | Comptometer | Minnesota |
| 51 | Arnold Gravelle | 13 | Son | — | Minnesota |
| 52 | Mary Driscoll | 75 | Head | — | Wisconsin |
| 53 | Catherine Basham | 70 | Sister | — | Wisconsin |
| 54 | Paul A. Wadetz | 70 | Head | — | Germany |
| 55 | Mary Wadetz | 66 | Wife | — | Hungary |
| 56 | Alexander Boos | 53 | Head | Sheet Refiner | Hungary |
| 57 | Mary Boos | 43 | Wife | — | Hungary |
| 58 | Elizabeth Boos | 24 | Daughter | Cookie Packer | Minnesota |
| 59 | Alexander Boos | 22 | Son | Sheet Refiner | Minnesota |
| 60 | Margaret Boos | 20 | Daughter | New Worker | Minnesota |
| 61 | Dorothy Boos | 16 | Daughter | — | Minnesota |
| 62 | Mildred Boos | 11 | Daughter | — | Minnesota |
| 63 | Frank Petro | 71 | Head | — | Hungary |
| 64 | Elizabeth Petro | 70 | Wife | — | Hungary |
| 65 | Balint Gyuric | 35 | Step-son | Crane Operator | Hungary |
| 66 | Emma Gyuric | 32 | Daughter | — | Minnesota |
| 67 | Michael Mayer | 51 | Head | Tailor | Hungary |
| 68 | Susie Mayer | 41 | Wife | — | Hungary |
| 69 | Michael Jr. Mayer | 25 | Son | Shipping Clerk | Minnesota |
| 70 | John Mayer THIS PERSON | 24 | Son | Laborer | Minnesota |
| 71 | Charles Mayer | 20 | Son | New Worker | Minnesota |
| 72 | Irene Mayer | 14 | Daughter | — | Minnesota |
| 73 | Andrew Nagy | 57 | Head | Laborer | Hungary |
| 74 | Ethel Nagy | 51 | Wife | — | Hungary |
| 75 | Rebecca Nagy | 22 | Daughter | New Worker | Minnesota |
| 76 | Isabel Nagy | 20 | Daughter | — | Minnesota |
| 77 | John Nagy | 18 | Son | Laborer | Minnesota |
| 78 | Helen Nagy | 15 | Daughter | — | Minnesota |
| 79 | Elsie Nagy | 12 | Daughter | — | Minnesota |
| 80 | Martha Nagy | 88 | Mother | — | Austria |
Related Census Records
Pedigree Summary
John + 3 siblings
Gen 1 · 7 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)