MD
Margaret Duffy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Margaret Duffy across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 5-person household.
Age 71
b. ~1869
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Duffy |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 3 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1869 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| James Duffy | Son | — | 27 | ~1913 |
| Corallcarroll Duffy | Daughter | — | 37 | ~1903 |
| John Duffy | Son | — | 33 | ~1907 |
| Corallcarroll Duffy | Other | — | 2 | ~1938 |
| Margaret Duffy | Head | — | 71 | ~1869 |
Census Appearances
1900
Hudson, New …
Other, age 26
Hudson, New Jersey · implied b. ~1874 — 18 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Margaret |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ireland |
| Birth Month | July |
| Birth Year | 1874 |
| Year of Immigration | 1893 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Waitress |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Hudson, New …
Spouse, age 37
Hudson, New Jersey · implied b. ~1873 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 12 |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Hudson, New …
Spouse, age 48
Hudson, New Jersey · implied b. ~1872 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | ireland |
1930
Hudson, New …
Other, age 58
Hudson, New Jersey · implied b. ~1872 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Margaret |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1884 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Hudson-County, New …
Head, age 71
Hudson-County, New Jersey · implied b. ~1869 — 5 household members
| Surname | Duffy |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | 3 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Margaret Duffy across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Duffy
Head · 1940 · age 71 · b. ~1869 · 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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02409-00552)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph Gurgalewicz | 52 | Head | Watchman | Poland |
| 42 | Mary Gurgalewicz | 43 | Wife | — | Poland |
| 43 | Helen Gurgalewicz | 23 | Daughter | Hair Dresser | Mass. |
| 44 | Edward Gurgalewicz | 21 | Son | Fireman | New York |
| 45 | John Gurgalewicz | 15 | Son | — | New Jersey |
| 46 | Rose Rubin | 69 | Head | — | Poland |
| 47 | Samuel Rubin | 30 | Son | Doctor/Dentistry | New Jersey |
| 48 | William Rubin | 27 | Son | Lawyer | New Jersey |
| 49 | Irving Rubin | 22 | Son | — | New Jersey |
| 50 | Henry Waldon | 40 | Head | Cook | Michigan |
| 51 | Stella Waldon | 32 | Wife | — | New Jersey |
| 52 | Henry Waldon | 12 | Son | — | New Jersey |
| 53 | Stephen Wysocki | 33 | Head | Mechanic | New Jersey |
| 54 | Edna Wysocki | 26 | Wife | — | New Jersey |
| 55 | Joan Wysocki | 9 | Daughter | — | New Jersey |
| 56 | Beatrice Wysocki | 7 | Daughter | — | New Jersey |
| 57 | Constance Wysocki | 2 | Daughter | — | New Jersey |
| 58 | Joseph Gurgalewitch | 25 | Head | Salesman | Pennsylvania |
| 59 | Mary Gurgalewitch | 26 | Wife | — | Oklahoma |
| 60 | Joseph Gurgalewitch | 2 | Son | — | New Jersey |
| 61 | Hugh Clark | 59 | Head | Govt Office | New Jersey |
| 62 | C. Gertrude Clark | 44 | Wife | — | New Jersey |
| 63 | Henry Kopf | 21 | Head | Laborer | New Jersey |
| 64 | Doris Kopf | 20 | Wife | File Clerk | New York |
| 65 | Margaret Duffy THIS PERSON | 71 | Head | — | Ireland |
| 66 | Corall|Carroll Duffy | 37 | Daughter | — | New Jersey |
| 67 | John Duffy | 33 | Son | Packer | New Jersey |
| 68 | James Duffy | 27 | Son | Bookkeeper | New Jersey |
| 69 | Corall|Carroll Duffy | 2 | Granddaughter | — | New Jersey |
| 70 | Herman Newman | 32 | Head | Collector | Russia |
| 71 | Rosell Newman | 30 | Wife | Dressmaker | New York |
| 72 | Renee Newman | 7 | Daughter | — | New Jersey |
| 73 | Arline Newman | 4 | Daughter | — | New Jersey |
| 74 | James H Scather | 71 | Head | File-Clerk | New Jersey |
| 75 | Mary Scather | 68 | Wife | — | New Jersey |
| 76 | Adam Flores | 45 | Head | Machinist | Cuba |
| 77 | Alda Flores | 46 | Wife | — | Maine |
| 78 | Morris Thaler | 40 | Head | Truckdriver | Poland |
| 79 | Anna Thaler | 30 | Wife | — | Poland |
| 80 | Alta Thaler | 7 | Daughter | — | New Jersey |
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)