WM
William Mayer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, New Jersey
Our Model Tree links this William Mayer across the 1930 and 1940 US Censuses in Middlesex-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, New Jersey |
| Surname | Mayer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Raritan |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Finisher |
| Industry | Automobile Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 796 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Finisher |
| Township / Ward | Raritan |
| Est. Birth Year | ~1917 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Augusta Mayer | Daughter | — | 20 | ~1920 |
| Jacob Stern | Head | — | 68 | ~1872 |
| Naomi Stern | Spouse | — | 51 | ~1889 |
| Herbert Mayer | Son | — | 18 | ~1922 |
| Julia Mayer | Other | — | 52 | ~1888 |
| William Mayer | Son | — | 23 | ~1917 |
Census Appearances
1930
Somerset, New …
Son, age 12
Somerset, New Jersey · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Meyer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Middlesex-County, New …
Son, age 23
Middlesex-County, New Jersey · implied b. ~1917 — 6 household members
| Surname | Mayer |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Raritan |
| 1935 Residence (County) | Middlesex |
| Occupation | Finisher |
| Industry | Automobile Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 796 |
| Highest Grade | H-4 |
| 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 23 · b. ~1917 · New Jersey
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Sibling
Augusta Mayer
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Mayer
Sibling · 1940 · age 18
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 — Middlesex-County, New Jersey
Open full size
1940 US Federal Census — Middlesex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02362-00747)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Martin Weiss | 43 | Head | Salesman | Hungary |
| 42 | Julia Weiss | 38 | Wife | — | Hungary |
| 43 | Harriet Weiss | 16 | Daughter | — | New York |
| 44 | Theodore Weiss | 8 | Son | — | New York |
| 45 | Alfred Elmore | 69 | Head | Carpenter | Denmark |
| 46 | George Elmore | 42 | Son | Carpenter | Denmark |
| 47 | Ronald Elmore | 38 | Son | Iron Smith | Denmark |
| 48 | Jacob Stern | 68 | Head | Gardener | Germany |
| 49 | Naomi Stern | 51 | Wife | Practical Nurse | Russia |
| 50 | William Mayer THIS PERSON | 23 | Son | Finisher | New Jersey |
| 51 | Augusta Mayer | 20 | Daughter | — | New Jersey |
| 52 | Herbert Mayer | 18 | Son | — | New Jersey |
| 53 | Julia Mayer | 52 | Mother | — | New Jersey |
| 54 | Peter Olsen | 36 | Head | Blacksmith | Denmark |
| 55 | Karen Olsen | 36 | Wife | Practical Nurse | Denmark |
| 56 | Peter Carl Olsen | 10 | Son | — | New Jersey |
| 57 | Alma M. Olsen | 6 | Daughter | — | New Jersey |
| 58 | Edward Mante | 30 | Head | Installation Man | New York |
| 59 | Margaret Mante | 24 | Wife | — | New Jersey |
| 60 | Richard Mathiesen | 49 | Head | Iron & Roller | Denmark |
| 61 | Marie Mathiesen | 47 | Wife | Dress Maker | Denmark |
| 62 | Herbert Mathiesen | 19 | Son | Brick Layer Apprentice | New Jersey |
| 63 | Nina Mathiesen | 18 | Daughter | — | New Jersey |
| 64 | Dorothy Mathiesen | 14 | Daughter | — | New Jersey |
| 65 | Herluf Larsen | 64 | Head | Watchman | Denmark |
| 66 | Astrid Larsen | 27 | Daughter | — | New Jersey |
| 67 | Harry Larsen | 25 | Son | Grocer | New Jersey |
| 68 | Anna Larsen | 23 | Daughter | — | New Jersey |
| 69 | Alexander Kupcs | 44 | Head | Utility Man | Hungary |
| 70 | Alma Kupcs | 40 | Wife | — | Denmark |
| 71 | Audrey Kupcs | 20 | Daughter | Theatrical Work | New Jersey |
| 72 | Leon Rogacki | 58 | Head | Baker | Poland |
| 73 | Helen Rogacki | 44 | Wife | Saleslady | New Jersey |
| 74 | Henry Rogacki | 22 | Son | Cutter | New Jersey |
| 75 | Walter Rogacki | 18 | Son | Truck Driver | New Jersey |
| 76 | Joe Zea | 75 | Lodger | Coater | Poland |
| 77 | Louis Schelling | 36 | Head | Bookkeeper | New York |
| 78 | Agnes Schelling | 35 | Wife | Clerk | New Jersey |
| 79 | Charles Wiworski | 41 | Head | Truck Driver | New Jersey |
| 80 | Martha Wiworski | 30 | Wife | Waitress | New Jersey |
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)