JD
James Duffy — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this James Duffy across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents John & Anna — first a head (b.~1907), then head of a 8-person household.
Age 33
b. ~1907
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | NEW YORK |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Model Maker |
| Industry | Metal Works |
| Class of Worker | PW |
| Hours Worked | 25 |
| Income (1939) | 452 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Model Maker |
| Township / Ward | New York City |
| Est. Birth Year | ~1907 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Winifred Duffy | Daughter | — | 7 | ~1933 |
| Helen Duffy | Daughter | — | 1 | ~1939 |
| James Duffy | Head | — | 33 | ~1907 |
| Mary Keaven | Other | — | 62 | ~1878 |
| Robert Duffy | Son | — | 9 | ~1931 |
| James Duffy | Son | — | 3 | ~1937 |
| John Duffy | Son | — | 1 | ~1939 |
| Helen Duffy | Spouse | — | 28 | ~1912 |
Census Appearances
1920
New York, …
Son, age 12
New York, New York · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | England |
| Year of Immigration | 1907 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Ireland |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | England |
| Year of Naturalization | 1917 |
| Birthplace (normalized) | england |
1930
New York, …
Son, age 23
New York, New York · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1908 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Chauffeur |
| Industry | Bakery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
New-York-County, New …
Head, age 33
New-York-County, New York · implied b. ~1907 — 8 household members
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | NEW YORK |
| Naturalization Status | Naturalized |
| Occupation | Model Maker |
| Industry | Metal Works |
| Class of Worker | PW |
| Hours Worked | 25 |
| Income (1939) | 452 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Duffy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Duffy (~0.92 confidence) and mother Anna Duffy (~0.92 confidence) and mother Mary Duffy (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Duffy
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
Anna Duffy
b. ~1865
Source mother
● Household
· direct · ~0.92
Mother
Mary Duffy
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Duffy
Head · 1940 · age 33 · b. ~1907 · New York
★ 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 — 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-t0627-02658-00864)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Theresa Yandurito | 10 | Daughter | — | Pennsylvania |
| 2 | Helen Yandurito | 8 | Daughter | — | New Jersey |
| 3 | Frank Banta | 21 | Nephew | — | Pennsylvania |
| 4 | Rudolf Gundner | 34 | Head | Kitchenman | Germany |
| 5 | James Duffy THIS PERSON | 33 | Head | Model Maker | England |
| 6 | Helen Duffy | 28 | Wife | Foreman | New York |
| 7 | Robert Duffy | 9 | Son | — | New York |
| 8 | Winifred Duffy | 7 | Daughter | — | New York |
| 9 | James Jr. Duffy | 3 | Son | — | New York |
| 10 | John Duffy | 1 | Son | — | New York |
| 11 | Helen Duffy | 1 | Daughter | — | New York |
| 12 | Mary Keaven | 62 | Mother-in-law | — | Irish Free State |
| 13 | Harold Mcconnell | 32 | Head | — | New York |
| 14 | Mary Mcconnell | 39 | Wife | — | New Jersey |
| 15 | Francis Mcconnell | 7 | Son | — | New York |
| 16 | Caroline Mcconnell | 1 | Daughter | — | New York |
| 17 | Daniel Bruno | 45 | Head | Fireman | New York |
| 18 | Rose Bruno | 42 | Wife | — | New York |
| 19 | James Bruno | 18 | Son | — | New York |
| 20 | Rose M. Bruno | 16 | Daughter | — | New York |
| 21 | Daniel Jr. Bruno | 14 | Son | — | New York |
| 22 | Edward Bruno | 12 | Son | — | New York |
| 23 | Martin Bavin | 68 | Head | Retired | Irish Free State |
| 24 | Sarah Bavin | 67 | Wife | — | Irish Free State |
| 25 | Anthony Bavin | 34 | Son | Plumber Helper | New York |
| 26 | Ellen Bavin | 37 | Daughter | Saleslady | New York |
| 27 | Thomas Bavin | 42 | Son | Plumber | New York |
| 28 | Eugene Bavin | 10 | Grandson | — | New York |
| 29 | Hugo Hillmann | 57 | Head | Steam Presser | Russia |
| 30 | Adeline Hillmann | 54 | Wife | — | New York |
| 31 | Bennet Wilmer | 50 | Bro-in-law | Plumber | New York |
| 32 | George Kibnickie | 51 | Head | Polisher | Austria |
| 33 | Anna Kibnickie | 49 | Wife | — | Austria |
| 34 | Mary Kibnickie | 28 | Daughter | Factory Girl | New York |
| 35 | Michael Kibnickie | 24 | Son | Handy Man | New York |
| 36 | Elizabeth Kibnickie | 17 | Daughter | — | New York |
| 37 | George Jr. Kibnickie | 14 | Son | — | New York |
| 38 | Jasper Timpa | 50 | Head | Gilder | Italy |
| 39 | Rae Timpa | 42 | Wife | Dressmaker | Italy |
| 40 | Vito Timpa | 21 | Son | — | New York |
Pedigree Summary
James
Gen 1 · 3 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)