JD
John Duffy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Hudson, New Jersey
Our Model Tree links this John Duffy across the 1900, 1910 and 1920 US Censuses in Hudson, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1860), then head of a 8-person household.
Age 60
b. ~1860
Male
Head
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Hudson, New Jersey |
| Surname | Duffy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Electrician |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | ireland |
| Occupation | Electrician |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1860 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Duffy | Daughter | — | 22 | ~1898 |
| Alice Duffy | Daughter | — | 21 | ~1899 |
| Helen Duffy | Daughter | — | 17 | ~1903 |
| Constance Duffy | Daughter | — | 19 | ~1901 |
| John Duffy | Head | — | 60 | ~1860 |
| Michael Sheehan | Other | — | 17 | ~1903 |
| John Duffy | Son | — | 14 | ~1906 |
| Mary Duffy | Spouse | — | 50 | ~1870 |
Census Appearances
1900
Hudson, New …
Head, age 40
Hudson, New Jersey · implied b. ~1860 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | June |
| Birth Year | 1860 |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Hudson, New …
Head, age 51
Hudson, New Jersey · implied b. ~1859 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Hudson, New …
Head, age 60
Hudson, New Jersey · implied b. ~1860 — 8 household members
| Surname | Duffy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Electrician |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Ireland |
| Year of Naturalization | 1900 |
| 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 John Duffy across 3 US Census years (1900, 1910 and 1920) in Hudson, New Jersey, using XGBoost record linkage.
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This person
Anchor record
John Duffy
Head · 1920 · age 60 · b. ~1860 · New Jersey
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Hudson, New Jersey
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1920 US Federal Census — Hudson, New Jersey
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1045unit:0032)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Mcgrath | 34 | Wife | — | New Jersey |
| 2 | John Mcgrath | 12 | Son | — | New Jersey |
| 3 | Teresa Mcgrath | 51 | Mother | Housekeeper | New Jersey |
| 4 | James Mcgrath | 30 | Brother | Laborer | New Jersey |
| 5 | George Hillwood | 27 | Head | Conductor | New Jersey |
| 6 | Hazel Hillwood | 23 | Wife | — | New Jersey |
| 7 | William Hillwood | 3 | Son | — | New Jersey |
| 8 | Thomas Taylor | 37 | Brother-in-law | Pipefitter | Connecticut |
| 9 | Agnes Kerrigan | 62 | Sister-in-law | — | Scotland |
| 10 | Wilson Brown | 59 | Head | Bricklayer | Ireland |
| 11 | Mary Brown | 57 | Wife | — | Scotland |
| 12 | Josephine Brown | 28 | Daughter | Clerk | New York |
| 13 | William Brown | 24 | Son | Factory Hand | New Jersey |
| 14 | Lizzie Brown | 20 | Daughter | Factory Hand | New Jersey |
| 15 | Florence Brown | 19 | Daughter | — | New Jersey |
| 16 | Margaret Brown | 16 | Daughter | Clerk | New Jersey |
| 17 | John Brown | 12 | Son | — | New Jersey |
| 18 | Thomas Travers | 58 | Head | Book Business | New Jersey |
| 19 | Mary Travers | 57 | Wife | — | England |
| 20 | Frank Travers | 29 | Son | Auto Body | New Jersey |
| 21 | Theresa Travers | 22 | Daughter | Driver | New Jersey |
| 22 | Thomas Thomas | 28 | Head | Restaurant | Greece |
| 23 | Frances Thomas | 28 | Wife | — | New Jersey |
| 24 | Samuel Bush | 58 | Head | Tailor | England |
| 25 | Martha Bush | 41 | Wife | — | Germany |
| 26 | Adelaide Bush | 26 | Daughter | — | New Jersey |
| 27 | Robert Bush | 23 | Son | Accountant | Germany |
| 28 | John Duffy THIS PERSON | 60 | Head | Electrician | Ireland |
| 29 | Mary Duffy | 50 | Wife | — | Ireland |
| 30 | Mary Duffy | 22 | Daughter | Telephone Operator | New Jersey |
| 31 | Alice Duffy | 21 | Daughter | Telephone Operator | New Jersey |
| 32 | Constance Duffy | 19 | Daughter | Clerk | New Jersey |
| 33 | Helen Duffy | 17 | Daughter | Clerk | New Jersey |
| 34 | John Duffy | 14 | Son | — | New Jersey |
| 35 | Michael Sheehan | 17 | Nephew | Helper | New Jersey |
| 36 | John Lori | 43 | Head | Barber | Italy |
| 37 | Teresa Lori | 41 | Wife | — | Italy |
| 38 | Daniel Lori | 18 | Son | Laborer | New Jersey |
| 39 | Florence Lori | 11 | Daughter | — | New Jersey |
| 40 | Annie Lori | 9 | Daughter | — | New Jersey |
| 41 | Angela Lori | 5 | Daughter | — | New Jersey |
| 42 | Joseph Lori | 2 | Son | — | New Jersey |
| 43 | Paula Quarnette | 71 | Mother-in-law | — | Italy |
| 44 | Louis Lange | 42 | Head | Ship Yard | New York |
| 45 | Teresa Lange | 42 | Wife | — | New Jersey |
| 46 | Thomas Lange | 20 | Son | Driver | New Jersey |
| 47 | Mary Lange | 18 | Daughter | Clerk | New Jersey |
| 48 | Nicholas Ballester | 36 | Head | Laborer | New Jersey |
| 49 | Patrick O'Connor | 65 | Father-in-law | Watchman | Ireland |
| 50 | Patrick O'Connor | 27 | Brother-in-law | Driver | New Jersey |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)