JD
James Dunn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this James Dunn across the 1910, 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed), with identified parents James & James — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: New Jersey
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 | 31 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Pet. Oil Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Mechanic |
| Township / Ward | Elizabeth |
| Est. Birth Year | ~1909 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Lola Dunn | Daughter | — | 31 | ~1909 |
| James Dunn | Head | — | 31 | ~1909 |
| James Dunn | Son | — | 4 | ~1936 |
Census Appearances
1910
Essex, New …
Son, age
Essex, New Jersey · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1920
Hudson, New …
Son, age 9
Hudson, New Jersey · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Passaic, New …
Son, age 20
Passaic, New Jersey · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Union-County, New …
Head, age 31
Union-County, New Jersey · implied b. ~1909 — 3 household members
| Surname | Dunn |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Occupation | Mechanic |
| Industry | Pet. Oil Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| 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 James Dunn across 4 US Census years (1910, 1920, 1930 and 1940) in 4 locations, using XGBoost record linkage. Identified parents: father James Dunn (~0.92 confidence) and father James Dunn (~0.92 confidence) and mother Katherine Dunn (~0.92 confidence) and mother Margaret Dunn (~0.92 confidence) and mother Mamie Dunn (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Dunn
b. ~1873
Source father
● Household
· direct · ~0.92
Father
James Dunn
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Katherine Dunn
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Margaret Dunn
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Mamie Dunn
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Dunn
Head · 1940 · age 31 · b. ~1909 · New Jersey
★ You are viewing this record
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
39 people indexed on this census page (nara:1940:m-t0627-02399-00624)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jeffrey Thompson | 9 | Son | — | New Jersey |
| 42 | Philip Dittmar | 35 | Head | Clerk | New Jersey |
| 43 | Gertrude Dittmar | 31 | Wife | — | New Jersey |
| 44 | Philip Dittmar | 8 | Son | — | New Jersey |
| 45 | Robert Dittmar | 1 | Son | — | New Jersey |
| 46 | Charles Gilmore | 60 | Head | Insurance Manager | New York |
| 47 | Delton Gilmore | 57 | Wife | — | Barbados |
| 48 | Charles Jr. (Ab) Gilmore | 22 | Son | — | New York |
| 49 | Fred Williamson | 44 | Head | Co. Salesman | New York |
| 50 | Lola Williamson | 41 | Wife | — | New Jersey |
| 51 | Matilda Mcdermott | 69 | Head | — | New York |
| 52 | Catherine Mcdermott | 74 | Sister | — | New York |
| 53 | Frank J. O'Donnell | 33 | Nephew | Clerk | New York |
| 54 | Theodore Fromme | 48 | Head | Manager | New Jersey |
| 55 | Ada Fromme | 57 | Wife | — | New Jersey |
| 56 | Celia Donenbury | 80 | Mother | — | New Jersey |
| 57 | Lola G. Donenbury | 41 | Sister-in-law | Secretary | New Jersey |
| 58 | Wm. A. Jackson | 71 | Head | Accountant | New York |
| 59 | Matilda E. Jackson | 80 | Sister | — | New York |
| 60 | Wm. P. Jr. Ernest | 39 | Head | Ind. Engineer | Pennsylvania |
| 61 | Ethel Ernest | 39 | Wife | — | New Jersey |
| 62 | Wm. 3Rd Ernest | 4 | Son | — | New Jersey |
| 63 | Philip Ernest | 1 | Son | — | New Jersey |
| 64 | Ernest | 69 | Father | — | Pennsylvania |
| 65 | Wm. Denholm | 60 | Head | Executive | Scotland |
| 66 | Janet Denholm | 54 | Wife | — | Scotland |
| 67 | Isadore Denholm | 31 | Daughter | Secretary | Scotland |
| 68 | Wm. Jr. (Ab) Denholm | 26 | Son | Aviator | Scotland |
| 69 | Jan Denholm | 24 | Son | Service Man | Scotland |
| 70 | Sophia Denholm | 23 | Daughter | Beautician | Scotland |
| 71 | Harry Connell | 53 | Head | Fireman | New York |
| 72 | Elizabeth Connell | 50 | Wife | — | New York |
| 73 | Florence Connell | 27 | Daughter | Stenographer | New Jersey |
| 74 | James Dunn THIS PERSON | 31 | Head | Mechanic | New Jersey |
| 75 | Lola Dunn | 31 | Daughter | — | New Jersey |
| 76 | James Jr. Dunn | 4 | Son | — | New Jersey |
| 77 | Joseph Mackey | 60 | Head | Printer | New Jersey |
| 78 | Julia Mackey | 55 | Wife | — | New Jersey |
| 79 | Gertrude Mackey | 23 | Daughter | — | New Jersey |
Related Census Records
Pedigree Summary
James
Gen 1 · 5 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)