JD
John Duffy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Luzerne, Pennsylvania
Our Model Tree links this John Duffy across the 1900, 1910 and 1920 US Censuses in Luzerne, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1854), then head of a 7-person household.
Age 66
b. ~1854
Male
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Luzerne, Pennsylvania |
| Surname | Duffy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Miner |
| Industry | Coal Mines |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Ireland |
| Year of Naturalization | 1886 |
| Birthplace (normalized) | ireland |
| Occupation | Miner |
| Township / Ward | Parsons Borough |
| Est. Birth Year | ~1854 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Duffy | Daughter | — | 37 | ~1883 |
| Teresa Duffy | Daughter | — | 34 | ~1886 |
| Gertrude Duffy | Daughter | — | 21 | ~1899 |
| John Duffy | Head | — | 66 | ~1854 |
| Frank Duffy | Son | — | 27 | ~1893 |
| Thomas Duffy | Son | — | 25 | ~1895 |
| James Duffy | Son | — | 31 | ~1889 |
Census Appearances
1900
Luzerne, Pennsylvania
Head, age 45
Luzerne, Pennsylvania · implied b. ~1855 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | May |
| Birth Year | 1855 |
| Year of Immigration | 1870 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Coal Miner |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Luzerne, Pennsylvania
Head, age 58
Luzerne, Pennsylvania · implied b. ~1852 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1876 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Luzerne, Pennsylvania
Head, age 66
Luzerne, Pennsylvania · implied b. ~1854 — 7 household members
| Surname | Duffy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Miner |
| Industry | Coal Mines |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Ireland |
| Year of Naturalization | 1886 |
| 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 Luzerne, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
John Duffy
Head · 1920 · age 66 · b. ~1854 · Pennsylvania
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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 — Luzerne, Pennsylvania
Open full size
1920 US Federal Census — Luzerne, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1595unit:0071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Geno Natali | 35 | Head | Miner | Italy |
| 52 | Jessie Natali | 19 | Wife | — | Pennsylvania |
| 53 | Leo Natali | 10 | Son | — | New York |
| 54 | Walter Philapkowski | 34 | Head | Miner | Russ Poland |
| 55 | Francis Philapkowski | 39 | Son | — | Pennsylvania |
| 56 | Raymond Philapkowski | 10 | Son | — | Pennsylvania |
| 57 | Leonard Philapkowski | 9 | Son | — | Pennsylvania |
| 58 | Eleanor Philapkowski | 7 | Daughter | — | Pennsylvania |
| 59 | Edward Philapkowski | 1 | Son | — | Pennsylvania |
| 60 | Susan Watkins | 70 | Head | — | Wales |
| 61 | Albert Knapp | 42 | Head | Laborer | Ohio |
| 62 | Lizzie Knapp | 36 | Wife | — | Pennsylvania |
| 63 | Frank Knapp | 14 | Son | Pressman | Ohio |
| 64 | Johannah Knapp | 16 | Daughter | Starcher | Ohio |
| 65 | Sherman Knapp | 3 | Son | — | Pennsylvania |
| 66 | Charles Knapp | 11 | Son | — | Pennsylvania |
| 67 | William Davis | 38 | Head | Mason | Wales |
| 68 | Maude Davis | 24 | Wife | — | Pennsylvania |
| 69 | Gudvella Davis | 70 | Mother | — | Wales |
| 70 | Reese Hill | 36 | Head | Laborer | Wales |
| 71 | Ida Hill | 39 | Wife | — | Pennsylvania |
| 72 | J. F. Burns | 46 | Head | Engineer | New York |
| 73 | Burns | 46 | Wife | — | New Jersey |
| 74 | Thomas Burns | 23 | Son | Mason H | New Jersey |
| 75 | Johanna Burns | 21 | Daughter | Operator | New Jersey |
| 76 | Margaret Burns | 16 | Daughter | Operator | Pennsylvania |
| 77 | Sarah Burns | 10 | Daughter | — | Pennsylvania |
| 78 | Anna Burns | 7 | Daughter | — | Pennsylvania |
| 79 | Johanna Griffin | 64 | Mother-in-law | — | Ireland |
| 80 | Minnie Watkins | 26 | Head | Housework | Pennsylvania |
| 81 | George Watkins | 10 | Son | — | Pennsylvania |
| 82 | Edna Watkins | 8 | Daughter | — | Pennsylvania |
| 83 | Jennie Watkins | 7 | Daughter | — | Pennsylvania |
| 84 | Elmer Watkins | 5 | Son | — | Pennsylvania |
| 85 | David Watkins | 6 | Son | — | Pennsylvania |
| 86 | Morgan Watkins | 2 | Son | — | Pennsylvania |
| 87 | Emma Turgic | 69 | Mother | — | England |
| 88 | Catherine Turgic | 22 | Sister | Soldered | England |
| 89 | James Mcafee | 26 | Head | Die Setter | Pennsylvania |
| 90 | Helen Mcafee | 21 | Wife | — | Pennsylvania |
| 91 | Catherine Mcafee | 0 | Daughter | — | Pennsylvania |
| 92 | John Duffy THIS PERSON | 66 | Head | Miner | Ireland |
| 93 | Mary Duffy | 37 | Daughter | — | Pennsylvania |
| 94 | Teresa Duffy | 34 | Daughter | Teacher | Pennsylvania |
| 95 | James Duffy | 31 | Son | Mine Foreman | Pennsylvania |
| 96 | Frank Duffy | 27 | Son | Teacher | Pennsylvania |
| 97 | Gertrude Duffy | 21 | Daughter | — | Pennsylvania |
| 98 | Thomas Duffy | 25 | Son | Teacher | Pennsylvania |
| 99 | William Watkins | 38 | Head | Secretary | Pennsylvania |
| 100 | Thelma Watkins | 37 | Wife | — | Pennsylvania |
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)