JM
John Mayer — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Clair, Michigan
Our Model Tree links this John Mayer across the 1930 and 1940 US Censuses in St Clair, Michigan (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 11-person household.
Age 8
b. ~1922
Male
Son
Born: Michigan
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | St Clair, Michigan |
| Surname | Mayer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Allenton |
| Est. Birth Year | ~1922 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Valentina Mayer | Daughter | — | 10 | ~1920 |
| Elizabeth Mayer | Daughter | — | 14 | ~1916 |
| Nellie Mayer | Daughter | — | 10 | ~1920 |
| Peter Mayer | Head | — | 50 | ~1880 |
| Peter Mayer | Son | — | ~1930 | |
| John Mayer | Son | — | 12 | ~1918 |
| Mike Mayer | Son | — | 3 | ~1927 |
| John Mayer | Son | — | 8 | ~1922 |
| Frank Mayer | Son | — | 1 | ~1929 |
| Thomas Mayer | Son | — | 6 | ~1924 |
| Lena Mayer | Spouse | — | 40 | ~1890 |
Census Appearances
1930
St Clair, …
Son, age 8
St Clair, Michigan · implied b. ~1922 — 11 household members
| Surname | Mayer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
St.-Clair-County, Michigan
Son, age 19
St.-Clair-County, Michigan · implied b. ~1921 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayers |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Allenton |
| 1935 Residence (County) | St Clair |
| Occupation | labour |
| Industry | farming |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 5 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mayer
Son · 1930 · age 8 · b. ~1922 · Michigan
★ You are viewing this record
Sibling
Valentina Mayer
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mike Mayer
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Mayer
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mayer
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Mayer
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mayer
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mayer
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Mayer
Sibling · 1930 · age
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
1930 US Federal Census — St Clair, Michigan
Open full size
1930 US Federal Census — St Clair, Michigan
Page Contents
50 people indexed on this census page (ia:1930:michigancensus00reel1024:0634)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hiram Peets | 52 | Head | Farmer | Michigan |
| 2 | James H. Massie | 60 | Head | Teacher | Scotland |
| 3 | Lizzie Massie | 55 | Wife | — | Michigan |
| 4 | Peter Mayer | 50 | Head | Sectionman | Germany |
| 5 | Lena Mayer | 40 | Wife | — | Germany |
| 6 | Elizabeth Mayer | 14 | Daughter | — | Michigan |
| 7 | John Mayer | 12 | Son | — | Michigan |
| 8 | Valentina Mayer | 10 | Daughter | — | Michigan |
| 9 | Nellie Mayer | 10 | Daughter | — | Michigan |
| 10 | John Mayer THIS PERSON | 8 | Son | — | Michigan |
| 11 | Thomas Mayer | 6 | Son | — | Michigan |
| 12 | Mike Mayer | 3 | Son | — | Michigan |
| 13 | Frank Mayer | 1 | Son | — | Michigan |
| 14 | Peter Mayer | 0 | Son | — | Michigan |
| 15 | Cyril Ballard | 37 | Head | Farmer | Belgium |
| 16 | Anna Ballard | 35 | Wife | — | Belgium |
| 17 | Elida Ballard | 16 | Daughter | — | Michigan |
| 18 | Lena Ballard | 13 | Daughter | — | Michigan |
| 19 | Morris Ballard | 10 | Son | — | Michigan |
| 20 | Margaret Ballard | 7 | Daughter | — | Michigan |
| 21 | Leo Ballard | 5 | Son | — | Michigan |
| 22 | Dorothy Ballard | 3 | Daughter | — | Michigan |
| 23 | Charles Ballard | 1 | Son | — | Michigan |
| 24 | Gustaf Honneer | 52 | Boarder | Laborer | Belgium |
| 25 | Peter Quitter | 45 | Head | Farmer | Austria Hung |
| 26 | Margaret Quitter | 43 | Wife | — | Austria Hung |
| 27 | Peter Quitter | 18 | Son | Laborer | Michigan |
| 28 | Tony Quitter | 16 | Son | — | Michigan |
| 29 | Leo Quitter | 14 | Son | — | Michigan |
| 30 | Albert Frank | 38 | Head | Laborer | Austria Hung |
| 31 | Elsie Frank | 33 | Wife | — | Austria Hung |
| 32 | Anna Frank | 13 | Daughter | — | Michigan |
| 33 | Helen Frank | 12 | Daughter | — | Michigan |
| 34 | Rose Frank | 10 | Daughter | — | Michigan |
| 35 | Albert Frank | 8 | Son | — | Michigan |
| 36 | John Frank | 4 | Son | — | Michigan |
| 37 | Irene Frank | 2 | Daughter | — | Michigan |
| 38 | Anna Bento | 80 | Head | — | Austria Hung |
| 39 | Carl Pfeil | 50 | Head | — | Germany |
| 40 | Catherine Pfeil | 42 | Wife | Weaver | Austria Hung |
| 41 | Katie Pfeil | 14 | Daughter | — | Michigan |
| 42 | Carl Pfeil | 12 | Son | — | Michigan |
| 43 | Andrew Pfeil | 7 | Son | — | Michigan |
| 44 | John Pfeil | 2 | Son | — | Michigan |
| 45 | John Trisch | 63 | Head | Farmer | Austria Hung |
| 46 | Mike Lischke | 45 | Head | Farmer | Austria Hung |
| 47 | Katherine Lischke | 45 | Wife | — | Austria Hung |
| 48 | William Dunbar | 50 | Head | Farmer | Michigan |
| 49 | Lottie Dunbar | 40 | Wife | — | Michigan |
| 50 | Dorothy Dunbar | 19 | Daughter | — | Michigan |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)