JM
John Mayer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Harris-County, Texas
Our Model Tree links this John Mayer across the 1920, 1930 and 1940 US Censuses in Harris-County, Texas (XGBoost, ~Confirmed) — first a head (b.~1856), then head of a 4-person household.
Age 84
b. ~1856
Male
Head
Born: Texas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Harris-County, Texas |
| Surname | Mayer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 84 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | Justice Precinct 6 |
| 1935 Residence (County) | Harris |
| Additional Details | |
| Industry | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Township / Ward | Justice Precinct 6 |
| Est. Birth Year | ~1856 |
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 |
|---|---|---|---|---|
| Lizzie Mayer | Daughter | — | 40 | ~1900 |
| John Mayer | Head | — | 84 | ~1856 |
| Milton Mayer | Son | — | 32 | ~1908 |
| Johanna Mayer | Spouse | — | 74 | ~1866 |
Census Appearances
1920
Harris, Texas
Head, age 61
Harris, Texas · implied b. ~1859
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Mayer |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Texas |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Georgia |
| Occupation | Ranchman |
| Industry | Own Ranch |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1930
Harris, Texas
Head, age 72
Harris, Texas · implied b. ~1858 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | John M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Texas |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Harris-County, Texas
Head, age 84
Harris-County, Texas · implied b. ~1856 — 4 household members
| Surname | Mayer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 84 |
| Marital Status | Married |
| Birthplace | Texas |
| 1935 Residence (City) | Justice Precinct 6 |
| 1935 Residence (County) | Harris |
| Industry | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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.
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This person
Anchor record
John Mayer
Head · 1940 · age 84 · b. ~1856 · Texas
★ 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 — Harris-County, Texas
Open full size
1940 US Federal Census — Harris-County, Texas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04056-00137)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vera Fries|Friis | 37 | Wife | — | Texas |
| 42 | Marion Fries|Friis | 16 | Daughter | — | Texas |
| 43 | Archer Fries|Friis | 15 | Son | — | Texas |
| 44 | Mary Fries|Friis | 14 | Daughter | — | Texas |
| 45 | Louise Fries|Friis | 13 | Daughter | — | Texas |
| 46 | Ruth Fries|Friis | 11 | Daughter | — | Texas |
| 47 | D. B. Fries|Friis | 8 | Son | — | Texas |
| 48 | Elmo Fries|Friis | 5 | Son | — | Texas |
| 49 | Dodge King | 52 | Half-sister | — | Texas |
| 50 | Arthur Garrick | 22 | Head | Farmer | Texas |
| 51 | Willena Garrick | 21 | Wife | — | Texas |
| 52 | Jean Dale Garrick | 3 | Daughter | — | Texas |
| 53 | John Mayer THIS PERSON | 84 | Head | — | Texas |
| 54 | Johanna Mayer | 74 | Wife | — | Texas |
| 55 | Lizzie Mayer | 40 | Daughter | Farming | Texas |
| 56 | Milton Mayer | 32 | Son | Farmer | Texas |
| 57 | Charlie Frazier | 57 | Head | Farmer | Texas |
| 58 | Pete Grieschaler | 50 | Head | Farmer | Poland |
| 59 | Mary Grieschaler | 44 | Wife | — | Texas |
| 60 | Emmerich Grieschaler | 16 | Son | — | Texas |
| 61 | Adolph Knobbel | 62 | Head | Farmer | Texas |
| 62 | Hulda Knobbel | 52 | Wife | — | Virginia |
| 63 | Leslie Knobbel | 25 | Son | Car Loader | Texas |
| 64 | Milton Knobbel | 21 | Son | Farming | Texas |
| 65 | Gertrude Knobbel | 19 | Daughter | Farming | Texas |
| 66 | Adolph Knobbel | 18 | Son | Farming | Texas |
| 67 | Glady Knobbel | 15 | Daughter | Farming | Texas |
| 68 | Kermit Knobbel | 14 | Son | — | Texas |
| 69 | Ora Lee Knobbel | 11 | Daughter | — | Texas |
| 70 | Donald Max Knobbel | 10 | Daughter | — | Texas |
| 71 | Frank Pope | 39 | Head | Farmer | Texas |
| 72 | Lillie Pope | 34 | Wife | — | Texas |
| 73 | Nadine Pope | 11 | Daughter | — | Texas |
| 74 | Adell Pope | 8 | Daughter | — | Texas |
| 75 | Betty Jean Pope | 5 | Daughter | — | Texas |
| 76 | Ruby Mae Pope | 2 | Daughter | — | Texas |
| 77 | Oscar Mayer | 54 | Head | Farmer | Texas |
| 78 | Martha Mayer | 44 | Wife | — | Texas |
| 79 | Ronald Mayer | 52 | Head | Farmer | Texas |
| 80 | Lena Mayer | 46 | Wife | Farming | Texas |
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)