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William Hartman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, New Jersey
Our Model Tree links this William Hartman across the 1920, 1930 and 1940 US Censuses in Middlesex-County, New Jersey (XGBoost, ~Confirmed), with identified parents Joseph & Agnes — first a son (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, New Jersey |
| Surname | Hartman |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | South River borough |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Electrician Helper |
| Industry | Powder|Powderly Elec Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 405 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Electrician Helper |
| Township / Ward | South River Borough |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| Joseph Hartman | Head | — | 60 | ~1880 |
| Agnes Hartman | Spouse | — | 55 | ~1885 |
| Kenneth Rogers | Other | — | 29 | ~1911 |
| Kenneth Peterson | Other | — | 9 | ~1931 |
| William Hartman | Son | — | 25 | ~1915 |
| Wysnitawynita Hartman | Daughter | — | 24 | ~1916 |
Census Appearances
1920
Middlesex, New …
Son, age 5
Middlesex, New Jersey · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Germany |
| Mother's Birthplace | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Middlesex, New …
Son, age 15
Middlesex, New Jersey · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartmann |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Germany |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Middlesex-County, New …
Son, age 25
Middlesex-County, New Jersey · implied b. ~1915 — 6 household members
| Surname | Hartman |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | South River borough |
| 1935 Residence (County) | Middlesex |
| Occupation | Electrician Helper |
| Industry | Powder|Powderly Elec Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 405 |
| Highest Grade | Hs 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 Hartman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Hartman (~0.92 confidence) and mother Agnes Hartman (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Hartman
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Agnes Hartman
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Hartman
Son · 1940 · age 25 · b. ~1915 · New Jersey
★ You are viewing this record
Sibling
Wysnitawynita Hartman
Sibling · 1940 · age 24
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-t0627-02363-00757)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stephen Dombrowski | 19 | Son | Daily|Delivery Driver | New Jersey |
| 2 | Edward Dombrowski | 13 | Son | — | New Jersey |
| 3 | Steven Kelemen | 52 | Head | Repairman | Hungary |
| 4 | Anna Kelemen | 42 | Wife | Operator | Hungary |
| 5 | Julia Kelemen | 21 | Daughter | — | New Jersey |
| 6 | Julius Kelemen | 56 | Head | St Repair | Hungary |
| 7 | Garod|Gabor Kelemen | 54 | Sister | Presser | Hungary |
| 8 | Joseph Hartman | 60 | Head | Engineer | Germany |
| 9 | Agnes Hartman | 55 | Wife | — | New Jersey |
| 10 | William Hartman THIS PERSON | 25 | Son | Electrician Helper | New Jersey |
| 11 | Wysnita|Wynita Hartman | 24 | Daughter | Trimmer | New Jersey |
| 12 | Kenneth Rogers | 29 | Son-in-law | Driver | New Jersey |
| 13 | Kenneth Peterson | 9 | Grandson | — | New Jersey |
| 14 | Herman Meyers | 39 | Head | Pipe Fitter | New Jersey |
| 15 | Hermina Meyers | 36 | Wife | Dressmaker | Germany |
| 16 | Carlo Ross | 42 | Head | Laborer | Italy |
| 17 | Josephine Ross | 40 | Wife | — | Italy |
| 18 | Dominick Ross | 19 | Son | Pipe Fitter Helper | New Jersey |
| 19 | Ralph Ross | 16 | Son | New Worker | New Jersey |
| 20 | Angelo Ross | 14 | Son | — | New Jersey |
| 21 | Lena Ross | 10 | Daughter | — | New Jersey |
| 22 | Peter Ross | 8 | Son | — | New Jersey |
| 23 | Josephine Ross | 5 | Daughter | — | New Jersey |
| 24 | Hans Mikkelsen | 70 | Head | Middlesex Cty Welfare Ass. Cook | Denmark |
| 25 | Peter Ratter | 37 | Head | Molder | New Jersey |
| 26 | Julia Ratter | 37 | Wife | — | New Jersey |
| 27 | Nelson Peterson | 38 | Head | Ironworker | Denmark |
| 28 | Evelyn Peterson | 34 | Wife | Trimmer | New Jersey |
| 29 | Ralph Peterson | 13 | Son | — | New Jersey |
| 30 | Ronald Peterson | 8 | Son | — | New Jersey |
| 31 | Howard Peterson | 5 | Son | — | New Jersey |
| 32 | Melvin Peterson | 4 | Son | — | New Jersey |
| 33 | Anthony Vecchis | 41 | Head | Laborer | Italy |
| 34 | Jennie Vecchis | 32 | Wife | — | Italy |
| 35 | Michael Vecchis | 11 | Son | — | New Jersey |
| 36 | Mary Vecchis | 10 | Daughter | — | New Jersey |
| 37 | Carmen Vecchis | 9 | Daughter | — | New Jersey |
| 38 | Sammuel Vecchis | 7 | Son | — | New Jersey |
| 39 | Tony Vecchis | 5 | Son | — | New Jersey |
| 40 | Ernestine Vecchis | 3 | Daughter | — | New Jersey |
Pedigree Summary
William + 1 sibling
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)