WM
William Mayer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this William Mayer across the 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 11-person household.
Age 17
b. ~1923
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Mayer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Borough of Roselle |
| 1935 Residence (County) | Union |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Borough Of Roselle |
| Est. Birth Year | ~1923 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Mayer | Daughter | — | 15 | ~1925 |
| Gertrude Mayer | Spouse | — | 44 | ~1896 |
| James Mayer | Head | — | 44 | ~1896 |
| George Mayer | Son | — | 14 | ~1926 |
| Robert Mayer | Son | — | 21 | ~1919 |
| Isabel Mayer | Daughter | — | 19 | ~1921 |
| Virginia Mayer | Daughter | — | 11 | ~1929 |
| Thelma Mayer | Daughter | — | 9 | ~1931 |
| Albert Mayer | Son | — | 12 | ~1928 |
| John Mayer | Son | — | 7 | ~1933 |
| William Mayer | Son | — | 17 | ~1923 |
Census Appearances
1930
Union, New …
Son, age 6
Union, New Jersey · implied b. ~1924 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Union-County, New …
Son, age 17
Union-County, New Jersey · implied b. ~1923 — 11 household members
| Surname | Mayer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Borough of Roselle |
| 1935 Residence (County) | Union |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 William Mayer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mayer
Son · 1940 · age 17 · b. ~1923 · New Jersey
★ You are viewing this record
Sibling
Robert Mayer
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mayer
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mayer
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabel Mayer
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Mayer
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Mayer
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Mayer
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Mayer
Sibling · 1940 · age 15
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 — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02388-00760)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Cooke | 36 | Head | Operator | New York |
| 2 | Wilma Cooke | 34 | Wife | Sewing Machine Operator | New York |
| 3 | Dorothy Cooke | 16 | Niece | — | New York |
| 4 | Phyllis Cooke | 12 | Niece | — | New Jersey |
| 5 | Celia Overbeck | 39 | Lodger | Tailoress | Massachusetts |
| 6 | Amos H. Vasseur | 44 | Head | Mechanic | Vermont |
| 7 | Louise A. Vasseur | 47 | Wife | — | Vermont |
| 8 | Donald A. Vasseur | 11 | Son | — | Massachusetts |
| 9 | Andrew G. Kucher | 41 | Head | Assistant Foreman | Czecho-Slovakia |
| 10 | Margaret Kucher | 31 | Wife | — | Czecho-Slovakia |
| 11 | Irene Kucher | 2 | Daughter | — | New Jersey |
| 12 | John Glovinsky | 40 | Brother-in-law | Wool Dyer | Ohio |
| 13 | James Miller | 80 | Head | — | New Jersey |
| 14 | Mabel Miller | 48 | Daughter | — | New Jersey |
| 15 | James Jr. Mayer | 44 | Head | Power Engineer | New York |
| 16 | Gertrude Mayer | 44 | Wife | Homemaker | New Jersey |
| 17 | Robert A. Mayer | 21 | Son | Fireman | New Jersey |
| 18 | Isabel Mayer | 19 | Daughter | Library Assistant | New Jersey |
| 19 | William Mayer THIS PERSON | 17 | Son | — | New Jersey |
| 20 | Gertrude Mayer | 15 | Daughter | — | New Jersey |
| 21 | George J. Mayer | 14 | Son | — | New Jersey |
| 22 | Albert Mayer | 12 | Son | — | New Jersey |
| 23 | Virginia Mayer | 11 | Daughter | — | New Jersey |
| 24 | Thelma Mayer | 9 | Daughter | — | New Jersey |
| 25 | John Mayer | 7 | Son | — | New Jersey |
| 26 | Mary A. Nelson | 62 | Head | — | New Jersey |
| 27 | George F. Nelson | 33 | Son | Greens Keeper | New Jersey |
| 28 | Edward M. Nelson | 29 | Son | Mechanic | New Jersey |
| 29 | William W. Nelson | 25 | Son | Chemist | New Jersey |
| 30 | Clarence J. Strickland | 47 | Head | Executive | New York |
| 31 | Essie B. Strickland | 44 | Wife | — | Oregon |
| 32 | Laura J. Strickland | 26 | Daughter | — | Missouri |
| 33 | Barbara Lindemann | 74 | Head | — | Germany |
| 34 | William F. Mathews | 42 | Head | Paper Cutter | Missouri |
| 35 | Leonard V. Mathews | 17 | Son | Sales Clerk | Missouri |
| 36 | Stanley H. Royer | 31 | Head | Engineer | Michigan |
| 37 | Vera E. Royer | 27 | Wife | — | New Jersey |
| 38 | Isaac L. Wood | 47 | Head | Apartment Manager | Connecticut |
| 39 | Edith O. Wood | 16 | Daughter | — | New Jersey |
| 40 | Mary E. Wood | 6 | Daughter | — | New Jersey |
Related Census Records
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)