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Thomas Duffy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Gloucester-County, New Jersey
Our Model Tree links this Thomas Duffy across the 1920, 1930 and 1940 US Censuses in Gloucester-County, New Jersey (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a son (b.~1912), then head of a 5-person household.
Age 28
b. ~1912
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Gloucester-County, New Jersey |
| Surname | Duffy |
| Given Name | Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Harrison T |
| 1935 Residence (County) | Gloucester |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Bakery Co. |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Truck Driver |
| Township / Ward | Harrison T |
| Est. Birth Year | ~1912 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Duffy | Head | — | 64 | ~1876 |
| Thomas Duffy | Son | — | 28 | ~1912 |
| Lewis Duffy | Son | — | 21 | ~1919 |
| Mary Duffy | Spouse | — | 60 | ~1880 |
| Francis Duffy | Son | — | 23 | ~1917 |
Census Appearances
1920
Gloucester, New …
Son, age 8
Gloucester, New Jersey · implied b. ~1912 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Gloucester, New …
Son, age 19
Gloucester, New Jersey · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Gloucester-County, New …
Son, age 28
Gloucester-County, New Jersey · implied b. ~1912 — 5 household members
| Surname | Duffy |
| Given Name | Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Harrison T |
| 1935 Residence (County) | Gloucester |
| Occupation | Truck Driver |
| Industry | Bakery Co. |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 600 |
| 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 Thomas Duffy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Duffy (~0.92 confidence) and father Thomas Duffy (~0.92 confidence) and mother Mary Duffy (~0.92 confidence) and mother Mary Duffy (~0.92 confidence) and mother Mary Duffy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Duffy
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Thomas Duffy
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Mary Duffy
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Mary Duffy
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Mary Duffy
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Duffy
Son · 1940 · age 28 · b. ~1912 · New Jersey
★ You are viewing this record
Sibling
Francis Duffy
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lewis Duffy
Sibling · 1940 · age 21
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 — Gloucester-County, New Jersey
Open full size
1940 US Federal Census — Gloucester-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02342-00670)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Johnson | 31 | Head | Truck Driver | Maryland |
| 2 | Thomas J. Duffy | 64 | Head | Farmer | New Jersey |
| 3 | Mary E. Duffy | 60 | Wife | — | New Jersey |
| 4 | Thomas Jr. Duffy THIS PERSON | 28 | Son | Truck Driver | New Jersey |
| 5 | Francis Duffy | 23 | Son | Farm Hand | New Jersey |
| 6 | Lewis Duffy | 21 | Son | Farm Hand | New Jersey |
| 7 | Rosario Ricca | 44 | Head | Farmer | Italy |
| 8 | Grace Ricca | 39 | Wife | — | Italy |
| 9 | Rosario Jr. Ricca | 15 | Son | — | Pennsylvania |
| 10 | Francis Ricca | 9 | Daughter | — | New Jersey |
| 11 | Catherine Ricca | 3 | Daughter | — | New Jersey |
| 12 | John Pratt | 21 | Head | Farm Hand | North Carolina |
| 13 | Joseph Casella | 41 | Head | Farmer | Italy |
| 14 | Sarah Casella | 39 | Wife | — | Italy |
| 15 | Samuel Casella | 19 | Son | Farm Hand | Pennsylvania |
| 16 | Josephine Casella | 17 | Daughter | — | Pennsylvania |
| 17 | John Casella | 14 | Son | — | New Jersey |
| 18 | Grace Casella | 9 | Daughter | — | New Jersey |
| 19 | S. Felix Adreot | 54 | Head | Farmer | New Jersey |
| 20 | Phillip S. Adreot | 30 | Son | Farmer | New Jersey |
| 21 | Elizabeth Adreot | 19 | Daughter-in-law | — | New Jersey |
| 22 | Larry Brothers | 33 | Head | Farm Hand | Virginia |
| 23 | Nathaniel Gibson | 27 | Lodger | Farm Hand | North Carolina |
| 24 | Harrison Ross | 25 | Head | Farm Hand | Virginia |
| 25 | Myrtle B. Ross | 23 | Wife | — | New Jersey |
| 26 | Harrison Jr. Ross | 5 | Son | — | New Jersey |
| 27 | Dorothy Ross | 3 | Daughter | — | New Jersey |
| 28 | James A. Ross | 1 | Son | — | New Jersey |
| 29 | Ralph B. Starkey | 41 | Head | Farmer | Pennsylvania |
| 30 | Sarah Starkey | 41 | Wife | — | Pennsylvania |
| 31 | John F. Zane | 41 | Head | Farm Manager | New Jersey |
| 32 | Clara B. Zane | 34 | Wife | — | New Jersey |
| 33 | Smith Zane | 17 | Son | — | New Jersey |
| 34 | Edna May Zane | 15 | Daughter | — | New Jersey |
| 35 | Earlson Zane | 5 | Daughter | — | New Jersey |
| 36 | William D. Iredell | 55 | Head | Farmer | New Jersey |
| 37 | Anna P. Iredell | 55 | Wife | — | New Jersey |
| 38 | Willard H. Waugh | 51 | Head | Farm Hand | Virginia |
| 39 | Amy V. Waugh | 40 | Wife | Teacher | Maryland |
| 40 | Ella Yeoman | 40 | Sister-in-law | — | Maryland |
Pedigree Summary
Thomas + 2 siblings
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)