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John Mayer — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Mayer across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Matilda — first a head (b.~1894), then head of a 5-person household.
Age 46
b. ~1894
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Mayer |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public Schools |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 4000 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Teacher |
| Township / Ward | Boston City |
| Est. Birth Year | ~1894 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Patricia Mayer | Daughter | — | 12 | ~1928 |
| John Mayer | Head | — | 46 | ~1894 |
| Lawrence Mayer | Son | — | 18 | ~1922 |
| Robert Mayer | Son | — | 10 | ~1930 |
| Lillian Mayer | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 25
Suffolk, Massachusetts · implied b. ~1895 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | John Victor |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Filing Clerk |
| Industry | Railroad Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Head, age 37
Suffolk, Massachusetts · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 27 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | School teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 55 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Head, age 46
Suffolk-County, Massachusetts · implied b. ~1894 — 5 household members
| Surname | Mayer |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Occupation | Teacher |
| Industry | Public Schools |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 4000 |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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: father John Mayer (~0.92 confidence) and mother Matilda Mayer (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mayer
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
Matilda Mayer
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mayer
Head · 1940 · age 46 · b. ~1894 · Massachusetts
★ 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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01680-00812)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marion Mack | 11 | Daughter | — | Massachusetts |
| 2 | Mildred Mack | 7 | Daughter | — | Massachusetts |
| 3 | James Healy | 36 | Head | Physician | Massachusetts |
| 4 | Madeline Healy | 30 | Wife | — | Massachusetts |
| 5 | James Jr. Healy | 6 | Son | — | Massachusetts |
| 6 | Pauline Healy | 3 | Daughter | — | Massachusetts |
| 7 | Jeremiah E. Sheehan | 42 | Head | Police Officer | Massachusetts |
| 8 | Elizabeth T. Sheehan | 40 | Wife | Buyer | Massachusetts |
| 9 | George Thomas | 34 | Head | Manager | Maine |
| 10 | Dorothy Thomas | 32 | Wife | — | Massachusetts |
| 11 | George Jr. Thomas | 12 | Son | — | Massachusetts |
| 12 | Harold Thomas | 11 | Son | — | Massachusetts |
| 13 | Dorothy Thomas | 8 | Daughter | — | Massachusetts |
| 14 | Joyce Thomas | 6 | Daughter | — | Massachusetts |
| 15 | Priscilla Thomas | 2 | Daughter | — | Massachusetts |
| 16 | Kenneth Bruce | 25 | Brother in law | Secretary | Massachusetts |
| 17 | Edward E. Hardin | 46 | Head | Manager | Massachusetts |
| 18 | Mabel E. Hardin | 41 | Wife | — | Massachusetts |
| 19 | Mary Hardin | 16 | Daughter | — | Massachusetts |
| 20 | Alice Hardin | 12 | Daughter | — | Massachusetts |
| 21 | Joan Hardin | 10 | Daughter | — | Massachusetts |
| 22 | Edward Hardin | 8 | Son | — | Massachusetts |
| 23 | Thomas Hardin | 6 | Son | — | Massachusetts |
| 24 | George Hardin | 4 | Son | — | Massachusetts |
| 25 | John Hardin | 1 | Son | — | Massachusetts |
| 26 | Timothy L. Sullivan | 40 | Head | Lawyer | Massachusetts |
| 27 | Katherine Sullivan | 40 | Wife | — | Massachusetts |
| 28 | Maureen Sullivan | 7 | Daughter | — | Massachusetts |
| 29 | Eleanor Sullivan | 5 | Daughter | — | Massachusetts |
| 30 | Harry A. Harring | 45 | Head | Salesman | Massachusetts |
| 31 | Valerie C. Harring | 18 | Daughter | — | Massachusetts |
| 32 | Lucia M. Harring | 15 | Daughter | — | Massachusetts |
| 33 | John D. Mayer THIS PERSON | 46 | Head | Teacher | Massachusetts |
| 34 | Lillian A. Mayer | 47 | Wife | — | Massachusetts |
| 35 | Lawrence Mayer | 18 | Son | Operator | Massachusetts |
| 36 | Patricia Mayer | 12 | Daughter | — | Massachusetts |
| 37 | Robert Mayer | 10 | Son | — | Massachusetts |
| 38 | Charles O'Connor | 60 | Head | Lawyer | Massachusetts |
| 39 | Katherine O'Connor | 55 | Wife | — | Massachusetts |
| 40 | George J. Hall | 49 | Head | — | Massachusetts |
Pedigree Summary
John
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)