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James Duffy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this James Duffy across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 9-person household.
Age 75
b. ~1865
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | N.Y.C. |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Nyc |
| Est. Birth Year | ~1865 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Florence Duffy | Daughter | — | 45 | ~1895 |
| Evelyn Duffy | Daughter | — | 26 | ~1914 |
| Loretta Duffy | Daughter | — | 41 | ~1899 |
| Gertrude Duffy | Daughter | — | 37 | ~1903 |
| James Duffy | Head | — | 75 | ~1865 |
| Lorraine Gillon | Other | — | 10 | ~1930 |
| Walter Duffy | Son | — | 28 | ~1912 |
| Clara Duffy | Son | — | 30 | ~1910 |
| Elizabeth Duffy | Spouse | — | 63 | ~1877 |
Census Appearances
1920
New York, …
Head, age 52
New York, New York · implied b. ~1868 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | clerk |
| Industry | office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | England |
| Year of Naturalization | 1894 |
| Birthplace (normalized) | england |
1930
New York, …
Head, age 64
New York, New York · implied b. ~1866 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1888 |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Salesman |
| Industry | Lumber Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 55 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Kings-County, New …
Head, age 75
Kings-County, New York · implied b. ~1865 — 9 household members
| Surname | Duffy |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | N.Y.C. |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| 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.
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This person
Anchor record
James Duffy
Head · 1940 · age 75 · b. ~1865 · New York
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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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02551-00855)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wm F. Carpenter | 58 | Head | Chemist | Vermont |
| 2 | Ethel R. Carpenter | 59 | Wife | — | New York |
| 3 | Albert L. Carpenter | 30 | Son | Vice Pres. | New York |
| 4 | Elizabeth Carpenter | 19 | Daughter | — | New York |
| 5 | Edw. Ware | 42 | Head | Electrician | New York |
| 6 | Irene Ware | 43 | Wife | — | New York |
| 7 | Chas. Jr. Ware | 20 | Son | Biscuit Maker | New York |
| 8 | Dorothy Ware | 19 | Daughter | New Worker | New York |
| 9 | Helen Ware | 16 | Daughter | — | New York |
| 10 | Harry Ware | 15 | Son | — | New Jersey |
| 11 | Kate Walter | 64 | Mother in law | — | New York |
| 12 | Wm. Segan | 71 | Head | — | Latvia |
| 13 | Rebecca Segan | 66 | Wife | — | Latvia |
| 14 | Herman Segan | 43 | Son | Painter | England |
| 15 | Amy Segan | 35 | Daughter | Operator | England |
| 16 | Ruth Segan | 30 | Daughter | Waitress | New York |
| 17 | Leroy Rogers | 46 | Head | Controller | New York |
| 18 | Genevieve Rogers | 35 | Wife | — | New York |
| 19 | Genevieve Rogers | 12 | Daughter | — | New York |
| 20 | John Rogers | 10 | Son | — | New York |
| 21 | Amelia Heiselman | 76 | Mother in law | — | New York |
| 22 | Charles Jr. Whalen | 43 | Head | Counsellor | New York |
| 23 | May Whalen | 40 | Wife | — | New York |
| 24 | May Cecilia Whalen | 15 | Daughter | — | New York |
| 25 | Agnes Whalen | 14 | Daughter | — | New York |
| 26 | Edward Jr. Whalen | 13 | Son | — | New York |
| 27 | Mary Jane Doyle | 64 | Mother in law | — | New York |
| 28 | James Duffy THIS PERSON | 75 | Head | — | England |
| 29 | Elizabeth Duffy | 63 | Wife | — | New York |
| 30 | Florence Duffy | 45 | Daughter | Stenographer | New York |
| 31 | Loretta Duffy | 41 | Daughter | Investigator | New York |
| 32 | Gertrude Duffy | 37 | Daughter | Secretary | New York |
| 33 | Clara Duffy | 30 | Son | Salesman | New York |
| 34 | Walter Duffy | 28 | Son | Clerk | New York |
| 35 | Evelyn Duffy | 26 | Daughter | Secretary | New York |
| 36 | Lorraine Gillon | 10 | Grand-daughter | — | New York |
| 37 | Michael J. Holmes | 62 | Head | Owner | Ireland |
| 38 | Agnes Holmes | 60 | Wife | — | Ireland |
| 39 | Michael Jr. Holmes | 27 | Son | Clerk | New York |
| 40 | Frederick Wicks | 31 | Head | Supt. | New York |
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)