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John Duffy — 1920 US Census Record

Linked across censuses

1920 United States Federal Census · New York, New York

Our Model Tree links this John Duffy across the 1910 and 1920 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a son (b.~1906), then head of a 11-person household.

Age 14 b. ~1906 Male Son Born: New York Single

1920 Census Record Details

Census Year1920
LocationNew York, New York
SurnameDuffy
Given NameJohn
Relationship to HeadSon
SexM
Color / RaceWhite
Age14
Marital StatusSingle
BirthplaceNew York
Father's BirthplaceIreland
Mother's BirthplaceIreland
Additional Details
Can ReadYes
Can WriteYes
Speaks EnglishYes
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardNew York City
Est. Birth Year~1906

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.

11 people recorded at the same address in the 1920 census.

Name Relation to head Relative to John Age Birth yr
Julia Duffy Daughter — 18 ~1902
Catherine Duffy Daughter — 6 ~1914
Mary Duffy Daughter — 12 ~1908
Anna Duffy Daughter — 20 ~1900
James Duffy Head — 47 ~1873
James Duffy Son — 16 ~1904
Richard Duffy Son — 2 ~1918
John Duffy Son — 14 ~1906
Patrick Duffy Son — 4 ~1916
Thomas Duffy Son — 8 ~1912
Kate Duffy Spouse — 40 ~1880

Census Appearances

1910
New York, …
Son, age 3
New York, New York · implied b. ~1907 — 7 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Duffy
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 3
Marital Status Single
Birthplace New York
Father's Birthplace Ireland
Mother's Birthplace Ireland
Can Read No
Can Write No
Speaks English Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1920
New York, …
Son, age 14
New York, New York · implied b. ~1906 — 11 household members
Surname Duffy
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 14
Marital Status Single
Birthplace New York
Father's Birthplace Ireland
Mother's Birthplace Ireland
Can Read Yes
Can Write Yes
Speaks English Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york

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.
Linked across censuses
Our Model Tree links John Duffy across 2 US Census years (1910 and 1920) in New York, New York, using XGBoost record linkage.
Show:
This person
Anchor record
John Duffy
Son · 1920 · age 14 · b. ~1906 · New York
★ You are viewing this record
Sibling
James Duffy
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Duffy
Sibling · 1920 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Duffy
Sibling · 1920 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Duffy
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Duffy
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Duffy
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Duffy
Sibling · 1920 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Duffy
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
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

Page Contents

50 people indexed on this census page (ia:1920:14thcensusofpopu1222unit:0933)

Line Name Age Relation Occupation Birthplace
51 Catherine Tracy 50 Head — Ireland
52 Daniel A Tracy 25 Son Fireman New York
53 William J Tracy 22 Son Fireman New York
54 Mary Tracy 20 Daughter Supervisor New York
55 Joseph Tracy 24 Son Line Man New York
56 Catherine Tracy 20 Daughter Bookkeeper New York
57 Margaret Tracy 17 Daughter Stock Girl New York
58 Charles Pearson 55 Head Dock Builder Sweden
59 Emma Pearson 48 Wife — Sweden
60 Arthur Pearson 24 Son Asst. On Boat New York
61 Charles Pearson 21 Son Bookkeeper New York
62 Florence Pearson 16 Daughter — New York
63 Gustaf Pearson 13 Son — New York
64 Madeline Pearson 7 Daughter — New York
65 Charles Pearson 44 Boarder Blacksmith Sweden
66 Arthur Hendrickson 24 Boarder Timekeeper New York
67 Thomas Bennett 46 Head Plasterer Ireland
68 Josephine Bennett 37 Wife — New York
69 Agnes M Bennett 18 Daughter Saleslady New York
70 William J Bennett 15 Son Messenger New York
71 Edna T Bennett 12 Son — New York
72 Alice Bennett 6 Daughter — New York
73 James J Duffy 47 Head Engineer Ireland
74 Kate W Duffy 40 Wife — Ireland
75 Anna Duffy 20 Daughter Cashier New York
76 Julia Duffy 18 Daughter Telephone Oper. New York
77 James Duffy 16 Son Office Boy New York
78 John Duffy THIS PERSON 14 Son — New York
79 Mary Duffy 12 Daughter — New York
80 Thomas Duffy 8 Son — New York
81 Catherine Duffy 6 Daughter — New York
82 Patrick Duffy 4 Son — New York
83 Richard Duffy 2 Son — New York
84 William J Galvin 32 Head Healthy Driver New York
85 Peter Galvin 26 Brother Packer New York
86 Mary Long 32 Niece — New York
87 Vincenza Spina 73 Head — Italy
88 Anthony Spina 44 Son Wood Carver Italy
89 Rose Spina 38 Daughter — New York
90 Francis Spina 36 Daughter Designer Hats New York
91 Jim Spina 34 Son Plasterer New York
92 Rose Spina 31 Daughter — New York
93 John Doman 39 Head Patrolman Germany
94 Dorothy Doman 27 Wife — Germany
95 Doris Doman 2 Daughter — New York
96 Robert Doman 1 Son — New York
97 Amanda Wolter 55 Mother-in-law — Germany
98 John Wolter 24 Brother-in-law Machinist New York
99 John Doman 67 Father Carpenter Germany
100 George Leonard 45 Head — New York

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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)

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