MD
Mary Duffy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · New York, New York
Our Model Tree links this Mary Duffy across the 1900, 1910 and 1920 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a spouse (b.~1857), then head of a 4-person household.
Age 63
b. ~1857
Female
Spouse
Born: England
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | New York, New York |
| Surname | Duffy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1881 |
| 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 |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | New York City |
| Est. Birth Year | ~1857 |
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.
4 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Duffy | Head | — | 70 | ~1850 |
| Francis Duffy | Son | — | 23 | ~1897 |
| John Duffy | Son | — | 30 | ~1890 |
| Mary Duffy | Spouse | — | 63 | ~1857 |
Census Appearances
1900
New York, …
Spouse, age 46
New York, New York · implied b. ~1854 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | England |
| Birth Month | July |
| Birth Year | 1854 |
| Year of Immigration | 1886 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | England |
| Birthplace (normalized) | england |
1910
New York, …
Spouse, age 55
New York, New York · implied b. ~1855 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | England |
| Years Married | 40 |
| Children Born | 1 |
| Children Living | 1 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Birth Country | England |
| Birthplace (normalized) | england |
1920
New York, …
Spouse, age 63
New York, New York · implied b. ~1857 — 4 household members
| Surname | Duffy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1881 |
| 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 | England |
| Birthplace (normalized) | england |
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 Mary Duffy across 3 US Census years (1900, 1910 and 1920) in New York, New York, using XGBoost record linkage.
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This person
Anchor record
Mary Duffy
Spouse · 1920 · age 63 · b. ~1857 · New York
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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 — New York, New York
Open full size
1920 US Federal Census — New York, New York
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1194unit:0854)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florence Sprague | 3 | Daughter | — | New York |
| 2 | Joseph Parks | 34 | Head | Sheet Metal | New York |
| 3 | Ada Parks | 32 | Wife | Waitress | Ireland |
| 4 | Ole Nelson | 50 | Head | Cleaner | Norway |
| 5 | Elizabeth Nelson | 16 | Daughter | — | New York |
| 6 | Helen Nelson | 11 | Daughter | — | New York |
| 7 | Mary Nelson | 9 | Daughter | — | New York |
| 8 | Ellen Wilson | 74 | Mother | — | Ireland |
| 9 | Ellen Walsh | 53 | Head | — | Ireland |
| 10 | Michael Walsh | 52 | Boarder | Porter | Ireland |
| 11 | Patrick Flynn | 25 | Boarder | Shipping Clerk | Ireland |
| 12 | Anna Swift | 50 | Head | — | Ohio |
| 13 | Lillian Straight | 30 | Daughter | — | West Virginia |
| 14 | James J. Cummings | 39 | Lodger | Roughman | New York |
| 15 | Margaret Owens | 26 | Head | — | New York |
| 16 | Harry Owens | 3 | Son | — | New York |
| 17 | Mary Brown | 18 | Niece | Saleslady | New York |
| 18 | Joseph Rahl | 62 | Lodger | Lumber Setter | New York |
| 19 | Margaret Talpin | 69 | Head | Cleaner | New York |
| 20 | Peter Berkery | 32 | Head | Fireman D.S. | New York |
| 21 | Matilda Berkery | 29 | Wife | — | New York |
| 22 | Rose Berkery | 60 | Mother | — | Ireland |
| 23 | Thomas Berkery | 8 | Son | — | New York |
| 24 | Winifred Berkery | 4 | Daughter | — | New York |
| 25 | Peter Berkery | 2 | Son | — | New York |
| 26 | Helen Kerrigan | 44 | Head | Cleaner Automobile | Ireland |
| 27 | James Kerrigan | 12 | Son | — | New York |
| 28 | Catherine Kerrigan | 9 | Daughter | — | New York |
| 29 | Bridget Reilly | 45 | Head | — | Ireland |
| 30 | Eugene Reilly | 24 | Son | Presser | New York |
| 31 | Beatrice Reilly | 17 | Daughter | Presser | New York |
| 32 | James Duffy | 70 | Head | — | Ireland |
| 33 | Mary Duffy THIS PERSON | 63 | Wife | — | England |
| 34 | John Duffy | 30 | Son | — | New York |
| 35 | Francis Duffy | 23 | Son | — | New York |
| 36 | Edward Davis | 64 | Head | Machinist | Ireland |
| 37 | Mary Davis | 53 | Wife | — | Ireland |
| 38 | Francis Davis | 22 | Son | Fireman | New York |
| 39 | James Davis | 16 | Son | — | New York |
| 40 | Peter Lebright | 51 | Head | Letter Carrier | New York |
| 41 | Lillian Lebright | 27 | Wife | — | New York |
| 42 | Ethel Lebright | 10 | Daughter | — | New York |
| 43 | Joseph Lebright | 6 | Son | — | New York |
| 44 | Frank Apriella | 24 | Head | Salesman | Italy |
| 45 | Nancy Apriella | 21 | Wife | — | Italy |
| 46 | Elizabeth Apriella | 2 | Daughter | — | New York |
| 47 | Antonio Sammone | 28 | Uncle | Helper | Italy |
| 48 | John Aldridge | 51 | Head | Blacksmith | New York |
| 49 | Margaret Aldridge | 48 | Wife | — | New York |
| 50 | Raymond Aldridge | 23 | Son | — | New York |
Related Census Records
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)