WD
William Duffy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this William Duffy across the 1900, 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1845), then head of a 3-person household.
Age 75
b. ~1845
Male
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Duffy |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1865 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1875 |
| Birthplace (normalized) | ireland |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1845 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Duffy | Head | — | 75 | ~1845 |
| Helen Duffy | Daughter | — | 32 | ~1888 |
| Anna Duffy | Daughter | — | 35 | ~1885 |
Census Appearances
1900
Philadelphia, Pennsylvania
Head, age 50
Philadelphia, Pennsylvania · implied b. ~1850 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Oct |
| Birth Year | 1850 |
| Year of Immigration | 1872 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Day laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Philadelphia, Pennsylvania
Head, age 62
Philadelphia, Pennsylvania · implied b. ~1848 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 34 |
| Year of Immigration | 1867 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Philadelphia, Pennsylvania
Head, age 75
Philadelphia, Pennsylvania · implied b. ~1845 — 3 household members
| Surname | Duffy |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1865 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1875 |
| 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 William Duffy across 3 US Census years (1900, 1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
William Duffy
Head · 1920 · age 75 · b. ~1845 · 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 — Philadelphia, Pennsylvania
Open full size
1920 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1627unit:0551)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Harry Hall | 25 | Lodger | Printer | Pennsylvania |
| 52 | Annie Hall | 22 | Lodger | — | Pennsylvania |
| 53 | Marie Hall | 0 | Lodger | — | Pennsylvania |
| 54 | George Veenkamp | 54 | Head | Clerk | Pennsylvania |
| 55 | Rose A. Veenkamp | 25 | Wife | — | Pennsylvania |
| 56 | L. S. Miller | 45 | Head | — | Pennsylvania |
| 57 | Mary M. Emerson | 76 | Mother | — | Maryland |
| 58 | Jacob Perkins | 33 | Head | Bookkeeper | New Jersey |
| 59 | Myra Perkins | 25 | Wife | — | Maryland |
| 60 | H. Hull | 51 | Boarder | Carpenter | New York |
| 61 | C. Bond | 49 | Boarder | Cabinet Maker | Maryland |
| 62 | Harry Wallace | 65 | Head | Sexton | Maryland |
| 63 | Emma F. Wallace | 58 | Wife | — | Delaware |
| 64 | Samuel Slight | 43 | Head | Tile Setter | Pennsylvania |
| 65 | Ethel F. Slight | 33 | Wife | — | Delaware |
| 66 | M. Stewart Reed | 35 | Head | Bookkeeper | Pennsylvania |
| 67 | Ethel M. Reed | 35 | Wife | Merchant | England |
| 68 | George H. High | 33 | Lodger | Plasterer | Pennsylvania |
| 69 | William H. Duffy THIS PERSON | 75 | Head | — | Ireland |
| 70 | Anna K. Duffy | 35 | Daughter | Milliner | Pennsylvania |
| 71 | Helen G. Duffy | 32 | Daughter | Bookkeeper | Pennsylvania |
| 72 | W. Rogers White | 35 | Head | Manager | Pennsylvania |
| 73 | Mary E. White | 36 | Wife | — | Pennsylvania |
| 74 | Ellwood B. Dickson | 47 | Head | Wharf Builder | Pennsylvania |
| 75 | Mary E. Dickson | 38 | Wife | — | Pennsylvania |
| 76 | Mildred R. Dickson | 8 | Daughter | — | Pennsylvania |
| 77 | Chas. F. Eisele | 35 | Head | Salesman | Germany |
| 78 | Bernola Eisele | 40 | Wife | — | Delaware |
| 79 | Albert B. Sopher | 39 | Head | Metal Worker | Pennsylvania |
| 80 | Virginia Pinder | 43 | Sister | Designer | Pennsylvania |
| 81 | Herbert R. Herbert | 19 | Head | Bookkeeper | Pennsylvania |
| 82 | Ruth V. Herbert | 20 | Wife | — | Pennsylvania |
| 83 | Joseph Stein | 27 | Head | Tailor | Kiev Rus. |
| 84 | Ida Stein | 25 | Wife | — | England |
| 85 | Jack Stein | 3 | Son | — | Pennsylvania |
| 86 | Howard Davis | 47 | Head | Asst. Foreman | Pennsylvania |
| 87 | Loring S. Davis | 45 | Wife | — | Pennsylvania |
| 88 | S. Paul Davis | 24 | Son | Clerk | Pennsylvania |
| 89 | William Mean | 51 | Head | Hand Dipper | Pennsylvania |
| 90 | Ida Mean | 55 | Wife | — | Delaware |
| 91 | Lawrence J. Hoyle | 67 | Head | Guard | Pennsylvania |
| 92 | Mary M. Hoyle | 63 | Wife | — | Ireland |
| 93 | John Morris | 61 | Head | Janitor | Pennsylvania |
| 94 | Elizabeth Morris | 62 | Wife | — | Pennsylvania |
| 95 | John P. Duffy | 43 | Head | Upholsterer | Pennsylvania |
| 96 | Mary Duffy | 33 | Wife | — | Pennsylvania |
| 97 | Mary Duffy | 9 | Daughter | — | Pennsylvania |
| 98 | Ruth Duffy | 6 | Daughter | — | Pennsylvania |
| 99 | John Duffy | 5 | Son | — | Pennsylvania |
| 100 | William Duffy | 3 | 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)