Margaret Duffy — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Kings-County, New York

Our Model Tree links this Margaret Duffy across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1910), then head of a 6-person household.

Age 30 b. ~1910 Female Spouse Born: New York Married

1940 Census Record Details

Census Year	1940
Location	Kings-County, New York
Surname	Duffy
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	30
Marital Status	Married
Birthplace	New York
1935 Residence (City)	New York City
1935 Residence (County)	Kings
Additional Details
Highest Grade	H-3
1935 Residence	Same Place
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Township / Ward	New York City
Est. Birth Year	~1910

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.

6 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to Margaret	Age	Birth yr
Helen Duffy	Daughter	—	11	~1929
Mary Duffy	Daughter	—	7	~1933
Margaret Duffy	Spouse	—	30	~1910
William Duffy	Son	—	3	~1937
Margaret Duffy	Daughter	—	9	~1931
William Duffy	Head	—	33	~1907

Census Appearances

1920

Kings, New …

Other, age 9

Kings, New York · implied b. ~1911 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Duffy
Given Name	Margaret
Relationship to Head	ward
Sex	F
Color / Race	White
Age	9
Marital Status	Single
Birthplace	New York
Father's Birthplace	Ireland
Mother's Birthplace	New York
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Kings, New …

Other, age 19

Kings, New York · implied b. ~1911 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Duffy
Given Name	Margaret M.
Sex	F
Color / Race	White
Age	19
Marital Status	Single
Birthplace	New York
Father's Birthplace	New York
Mother's Birthplace	New York
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1940

Kings-County, New …

Spouse, age 30

Kings-County, New York · implied b. ~1910 — 6 household members

Surname	Duffy
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	30
Marital Status	Married
Birthplace	New York
1935 Residence (City)	New York City
1935 Residence (County)	Kings
Highest Grade	H-3
1935 Residence	Same Place
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

Our Model Tree links Margaret Duffy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Margaret Duffy

Spouse · 1940 · age 30 · b. ~1910 · New York

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Kings-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02560-00638)

Line	Name	Age	Relation	Occupation	Birthplace
41	William Duffy	33	Head	Chauffeur	New York
42	Margaret Duffy THIS PERSON	30	Wife	—	New York
43	Helen Duffy	11	Daughter	—	New York
44	Margaret Duffy	9	Daughter	—	New York
45	Mary Duffy	7	Daughter	—	New York
46	William Duffy	3	Son	—	New York
47	Gillis Johnson	32	Head	Masseur	Sweden
48	Alice Johnson	34	Wife	—	New Jersey
49	Edith Johnson	11	Daughter	—	New York
50	Johanna Johnson	2	Daughter	—	New York
51	Gillis Johnson	1	Son	—	New York
52	Thomas Mccall	53	Head	—	England
53	Cathryn Mccall	41	Wife	—	New Jersey
54	Margaret Mccall	20	Daughter	Packer	New York
55	Frances Mccall	19	Daughter	Packer	New York
56	Theresa Mccall	14	Daughter	—	New York
57	Helen Mccall	12	Daughter	—	New York
58	Leonard Hitzler	31	Head	Machinist	New Jersey
59	Rose Hitzler	23	Wife	—	New Jersey
60	Rose Marie Hitzler	3	Daughter	—	New York
61	Isaac Galanos	40	Head	Operator	Greece
62	Regina Galanos	38	Wife	—	Greece
63	Salomon Galanos	17	Son	—	New York
64	Hyman Galanos	15	Son	—	New York
65	Anna Galanos	11	Daughter	—	New York
66	Sylvia Galanos	7	Daughter	—	New York
67	Thomas Occhipinti	25	Head	Stock Clerk	New York
68	Dolores Occhipinti	25	Wife	—	New York
69	Catherine Occhipinti	1	Daughter	—	New York
70	Loretta Mazzotto	18	Sister	Operator	New York
71	Michael Mcpalin	35	Head	Clerk	Ireland
72	Frances Mcpalin	30	Wife	—	New York
73	Margaret Mcpalin	9	Daughter	—	New York
74	Charlotte Mcpalin	8	Daughter	—	New York
75	Daniel Mcpalin	5	Son	—	New York
76	Peter Mcpalin	1	Son	—	New York
77	Edward Bulger	36	Head	Porter	New York
78	Catherine Bulger	36	Wife	—	England
79	William Bulger	2	Son	—	New York
80	Jesse Douglas	42	Head	Wrecker	New York

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1940 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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