WD
William Duffy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Butler, Pennsylvania
Our Model Tree links this William Duffy across the 1910 and 1920 US Censuses in Butler, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 7-person household.
Age 45
b. ~1875
Male
Head
Born: Pennsylvania
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Butler, Pennsylvania |
| Surname | Duffy |
| Given Name | William H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Farmer |
| Township / Ward | West Sunbury Borough |
| Est. Birth Year | ~1875 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Ruth Duffy | Daughter | — | 11 | ~1909 |
| James Duffy | Son | — | 9 | ~1911 |
| William Duffy | Head | — | 45 | ~1875 |
| Margaret Duffy | Daughter | — | 13 | ~1907 |
| Loyal Duffy | Son | — | 2 | ~1918 |
| Martha Duffy | Spouse | — | 40 | ~1880 |
| Mary Duffy | Daughter | — | 7 | ~1913 |
Census Appearances
1910
Butler, Pennsylvania
Head, age 34
Butler, Pennsylvania · implied b. ~1876 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Years Married | 4 |
| Father's Birthplace | Unknown |
| Mother's Birthplace | Pennsylvania |
| Occupation | Farmer |
| Industry | Farm |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Butler, Pennsylvania
Head, age 45
Butler, Pennsylvania · implied b. ~1875 — 7 household members
| Surname | Duffy |
| Given Name | William H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 William Duffy across 2 US Census years (1910 and 1920) in Butler, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
William Duffy
Head · 1920 · age 45 · b. ~1875 · 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 — Butler, Pennsylvania
Open full size
1920 US Federal Census — Butler, Pennsylvania
Page Contents
17 people indexed on this census page (ia:1920:14thcensusofpopu1544unit:0344)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isaac H Hilliard | 63 | Father | Butcher | Pennsylvania |
| 2 | Leona M Hilliard | 61 | Aunt | Servant | Pennsylvania |
| 3 | Herbert M Black | 43 | Head | Post Master | Pennsylvania |
| 4 | Margaret S Black | 40 | Wife | — | Pennsylvania |
| 5 | Maurice Black | 15 | Son | — | Pennsylvania |
| 6 | Raymond L Black | 11 | Son | — | Pennsylvania |
| 7 | David H Ellis | 69 | Head | Miller | Wales |
| 8 | Nancy Ellis | 64 | Wife | — | Pennsylvania |
| 9 | William H Duffy THIS PERSON | 45 | Head | Farmer | Pennsylvania |
| 10 | Martha Duffy | 40 | Wife | — | Pennsylvania |
| 11 | Margaret B Duffy | 13 | Daughter | — | Pennsylvania |
| 12 | Ruth Duffy | 11 | Daughter | — | Pennsylvania |
| 13 | James Duffy | 9 | Son | — | Pennsylvania |
| 14 | Mary L Duffy | 7 | Daughter | — | Pennsylvania |
| 15 | Loyal A Duffy | 2 | Son | — | Pennsylvania |
| 16 | Lillian M Parke | 39 | Head | Wash Woman | Pennsylvania |
| 17 | Charles L Parke | 10 | Son | — | 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)