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Thomas Duffy — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this Thomas Duffy across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents James & Peter — first a son (b.~1913), then head of a 7-person household.
Age 27
b. ~1913
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Duffy |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Additional Details | |
| Occupation | Gardener |
| Industry | World Fair |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 720 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Gardener |
| Township / Ward | New York City |
| Est. Birth Year | ~1913 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Catherine Duffy | Daughter | — | 20 | ~1920 |
| Anna Duffy | Daughter | — | 25 | ~1915 |
| Charles Duffy | Son | — | 26 | ~1914 |
| Margaret Duffy | Daughter | — | 18 | ~1922 |
| Peter Duffy | Head | — | 59 | ~1881 |
| Margaret Duffy | Spouse | — | 54 | ~1886 |
| Thomas Duffy | Son | — | 27 | ~1913 |
Census Appearances
1920
New York, …
Son, age 6
New York, New York · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
New York, …
Son, age 16
New York, New York · implied b. ~1914 — 18 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Son, age 27
New-York-County, New York · implied b. ~1913 — 7 household members
| Surname | Duffy |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Occupation | Gardener |
| Industry | World Fair |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 720 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 James Duffy (~0.92 confidence) and father Peter Duffy (~0.92 confidence) and father Peter Duffy (~0.92 confidence) and mother Margaret Duffy (~0.92 confidence) and mother Mary Duffy (~0.92 confidence) and mother Mary Duffy (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Duffy
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Peter Duffy
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Peter Duffy
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Margaret Duffy
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Mary Duffy
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Mary Duffy
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Duffy
Son · 1940 · age 27 · b. ~1913 · New York
★ You are viewing this record
Sibling
Margaret Duffy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Duffy
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Duffy
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Duffy
Sibling · 1940 · age 26
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 — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02658-00374)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Josephine Winkelman | 19 | Daughter | Errand Boy | New York |
| 42 | Stanley Winkelman | 16 | Son | News Maker | New York |
| 43 | Pauline Winkelman | 14 | Daughter | — | New York |
| 44 | Joseph Winkelman | 12 | Son | — | New York |
| 45 | Morris Gross | 43 | Head | Mechanic | Hungary |
| 46 | Louise Gross | 40 | Wife | — | Hungary |
| 47 | Beatrice Gross | 15 | Daughter | — | New York |
| 48 | Joseph Klein | 84 | Father | — | Hungary |
| 49 | Charles E Norman | 53 | Head | Chauffeur | Switzerland |
| 50 | Bridget Norman | 54 | Wife | — | Eire |
| 51 | Jean G Norman | 25 | Daughter | Steno | Connecticut |
| 52 | John W Norman | 22 | Son | Floor Man | New York |
| 53 | Mary Corr | 57 | Head | — | Eire |
| 54 | James Mac Phillips | 30 | Nephew | Manager | Eire |
| 55 | Mary Corr | 29 | Niece | Maid | Eire |
| 56 | Julius Ching | 66 | Head | Clerk | New York |
| 57 | Elizabeth Ching | 90 | Mother | — | Germany |
| 58 | Ching | 50 | Sister | — | New York |
| 59 | Peter Duffy | 59 | Head | Superintendent | Eire |
| 60 | Margaret Duffy | 54 | Wife | — | Eire |
| 61 | Thomas Duffy THIS PERSON | 27 | Son | Gardener | New York |
| 62 | Charles Duffy | 26 | Son | Chauffeur | New York |
| 63 | Anna Duffy | 25 | Daughter | Typist | New York |
| 64 | Catherine Duffy | 20 | Daughter | Saleslady | New York |
| 65 | Margaret Duffy | 18 | Daughter | Saleslady | New York |
| 66 | William Hanauer | 36 | Head | Mechanic | Germany |
| 67 | Frieda Hanauer | 32 | Wife | — | Germany |
| 68 | Carl Ehike | 55 | Lodger | Porter | Germany |
| 69 | Collins | None | — | — | — |
| 70 | — | None | — | — | — |
| 71 | Barney | None | — | — | — |
| 72 | — | None | — | — | — |
| 73 | Patrick Mc Carthy | 30 | Head | Superintendent | Eire |
| 74 | Frances Mc Carthy | 28 | Wife | — | Eire |
| 75 | Ruth Taylor | 59 | Head | Saleslady | Illinois |
| 76 | Helen Taylor | 19 | Daughter | File Clerk | New York |
| 77 | Walter Taylor | 15 | Son | — | New York |
| 78 | Peter Smith | 23 | Brother | Manager | Connecticut |
| 79 | Michael De Lede | 46 | Lodger | Manager | Italy |
| 80 | Theresa Pelkion | 56 | Head | — | Hungary |
Related Census Records
Pedigree Summary
Thomas + 4 siblings
Gen 1 · 6 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)