JD
James Dunn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this James Dunn across the 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 6-person household.
Age 50
b. ~1890
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Stationary Engineer |
| Industry | Dairy factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3700 |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Stationary Engineer |
| Township / Ward | Elizabeth |
| Est. Birth Year | ~1890 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Genevieve Dunn | Daughter | — | 18 | ~1922 |
| Margaret Dunn | Daughter | — | 8 | ~1932 |
| James Dunn | Head | — | 50 | ~1890 |
| Thomas Dunn | Son | — | 19 | ~1921 |
| Joseph Dunn | Son | — | 12 | ~1928 |
| James Dunn | Son | — | 23 | ~1917 |
Census Appearances
1920
Essex, New …
Head, age 33
Essex, New Jersey · implied b. ~1887 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1901 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Conductor |
| Industry | Street Rail |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1912 |
| Birthplace (normalized) | ireland |
1930
Union, New …
Head, age 44
Union, New Jersey · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Alien |
| Year of Immigration | 1901 |
| Age at First Marriage | 32 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Irish Free State |
| Occupation | Salesman |
| Industry | Automobiles |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 41 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Union-County, New …
Head, age 50
Union-County, New Jersey · implied b. ~1890 — 6 household members
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Naturalization Status | Naturalized |
| Occupation | Stationary Engineer |
| Industry | Dairy factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3700 |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 James Dunn across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
James Dunn
Head · 1940 · age 50 · b. ~1890 · New Jersey
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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-t0627-02398-00408)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isabel Czynski | 49 | wife | — | New Jersey |
| 2 | Charles Czynski | 19 | son | Grinder | New Jersey |
| 3 | Donald Czynski | 10 | son | — | New Jersey |
| 4 | James Dunn THIS PERSON | 50 | head | Stationary Engineer | Ireland |
| 5 | James Dunn | 23 | son | Clerk Driver | New Jersey |
| 6 | Thomas Dunn | 19 | son | — | New Jersey |
| 7 | Genevieve Dunn | 18 | daughter | — | New Jersey |
| 8 | Joseph Dunn | 12 | son | — | New Jersey |
| 9 | Margaret Dunn | 8 | daughter | — | New Jersey |
| 10 | Clement Ruemmler | 43 | head | Steelman | Wisconsin |
| 11 | Marie Ruemmler | 35 | wife | — | New Jersey |
| 12 | Arlene Ruemmler | 17 | daughter | — | New Jersey |
| 13 | Clifford Ruemmler | 16 | son | — | New Jersey |
| 14 | Frank Mannion | 43 | head | Bar Tender | Ireland |
| 15 | Margaret Mannion | 43 | wife | — | Ireland |
| 16 | Agnes Mannion | 17 | daughter | — | Ireland |
| 17 | Mary Mannion | 16 | daughter | — | Ireland |
| 18 | Thomas Mannion | 14 | son | — | Ireland |
| 19 | James Mannion | 13 | son | — | Ireland |
| 20 | Patricia Mannion | 10 | daughter | — | New Jersey |
| 21 | Helen O'Brien | 60 | head | — | Ireland |
| 22 | Alice O'Brien | 23 | daughter | Stenographer | New Jersey |
| 23 | Edward Troshinsky | 33 | son | Truckman | New Jersey |
| 24 | Helen Troshinsky | 30 | daughter | Operator | New Jersey |
| 25 | Thomas Mcloughlin | 55 | boarder | Gardiner | Ireland |
| 26 | — | None | — | — | — |
| 27 | Stephen Savage | 47 | head | Sub-Station Operator | Illinois |
| 28 | Elizabeth Savage | 35 | wife | — | Scotland |
| 29 | Walter Savage | 14 | son | — | New Jersey |
| 30 | James B. Savage | 9 | son | — | New Jersey |
| 31 | August Klein | 49 | head | Operator | New Jersey |
| 32 | Helen Klein | 44 | wife | — | New Jersey |
| 33 | Robert Klein | 11 | son | — | New Jersey |
| 34 | Alfred Smith | 40 | head | Credit Appraiser | New York |
| 35 | Julia Smith | 39 | wife | Locker Lady | New Jersey |
| 36 | Alfred Smith | 14 | son | — | New Jersey |
| 37 | Thomas Kearney | 46 | brother in law | Laborer | New Jersey |
| 38 | Theresa Kearney | 35 | sister in law | Saleslady | New Jersey |
| 39 | Elizabeth Shannon | 65 | head | — | New Jersey |
| 40 | Harry Shannon | 29 | son | Tester | 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)