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William Cassidy — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this William Cassidy across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a son (b.~1913), then head of a 7-person household.

Age 27 b. ~1913 Male Son Born: New York Single

1940 Census Record Details

Census Year1940
LocationKings-County, New York
SurnameCassidy
Given NameWilliam
Relationship to HeadSon
SexM
Color / RaceWhite
Age27
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)New York City
1935 Residence (County)New York City
Additional Details
Occupationnewspaper route man
Industrynewspaper
Class of WorkerPW
Hours Worked48
Income (1939)624
Highest GradeNo 6
1935 ResidenceNew York
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
OccupationNewspaper Route Man
Township / WardNew York City
Est. Birth Year~1913

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 1940 census.

Name Relation to head Relative to William Age Birth yr
Martin Smith Head — 54 ~1886
Sarah Smith Spouse — 62 ~1878
Rose O'Neill Daughter — 36 ~1904
John O'Neill Other — 37 ~1903
William Cassidy Son — 27 ~1913
Joseph Cassidy Son — 22 ~1918
Bertha Cassidy Spouse — 64 ~1876

Census Appearances

1930
Kings, New …
Son, age 17
Kings, New York · implied b. ~1913 — 3 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Cassidy
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 17
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Can Read/Write Yes
Veteran No
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Kings-County, New …
Son, age 27
Kings-County, New York · implied b. ~1913 — 7 household members
Surname Cassidy
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 27
Marital Status Single
Birthplace New York
1935 Residence (City) New York City
1935 Residence (County) New York City
Occupation newspaper route man
Industry newspaper
Class of Worker PW
Hours Worked 48
Income (1939) 624
Highest Grade No 6
1935 Residence New York
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 William Cassidy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Cassidy
Son · 1940 · age 27 · b. ~1913 · New York
★ You are viewing this record
Sibling
Rose O'Neill
Sibling · 1940 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Cassidy
Sibling · 1940 · age 22
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

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

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02587-00657)

Line Name Age Relation Occupation Birthplace
41 Lora Whiting 31 Wife — New York
42 John, V. Whiting 5 Son — New York
43 William, T. Whiting 3 Son — New York
44 Ben Whiting 1 Son — New York
45 Ruth, B. Whiting 0 Daughter — New York
46 Thomas Mccoll 36 Head Concrete Worker Scotland
47 Henry Mccoll 16 Son — Scotland
48 Theodore Sukmanowski 53 Head Porter Poland
49 Mary Sukmanowski 44 Wife Operator Poland
50 Walter Sukmanowski 21 Son Operates Dja Machine New York
51 Stephen Sukmanowski 17 Son — New York
52 Anna Sukmanowski 15 Daughter — New York
53 Ben Stern 49 Head Cutter Hungary
54 Henrietta Stern 42 Wife — Hungary
55 Edward Stern 17 Son — New York
56 Malvina Stern 13 Daughter — New York
57 John Mcglynn 52 Head Car Carder New York
58 Margaret Mcglynn 40 Wife — New York
59 Margaret Mcglynn 12 Daughter — New York
60 John, Jr. Mcglynn 2 Son — New York
61 Ethel Myers 51 Head — New York
62 Albert Myers 9 Son — New York
63 Bernard, F. Cummings 24 Son Operator New York
64 Henry Cummings 22 Son Machinist New York
65 Frank O'Neil 73 Head — New York
66 Sarah O'Neil 61 Wife — Scotland
67 James, P. Mottier 34 Head Chauffer New York
68 Mary Mottier 32 Wife Assorter New York
69 James Mottier 13 Son — New York
70 Phillip Mottier 12 Son — New York
71 Charles Mottier 11 Son — New York
72 Thomas Mcaree 51 Head Guard Ireland
73 Thomas, Jr. Mcaree 18 Son Newworker New York
74 Martin Smith 54 Head Blacksmith Helper Ireland
75 Sarah Smith 62 Wife — Ireland
76 Bertha Cassidy 64 Wife — New York
77 William Cassidy THIS PERSON 27 Son Newspaper Route Man New York
78 Joseph Cassidy 22 Son — New York
79 John O'Neill 37 Son in Law Sander New York
80 Rose O'Neill 36 Daughter Packer 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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