John Cassidy — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this John Cassidy across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 4-person household.

Age 65 b. ~1875 Male Head Born: Ireland Married

1940 Census Record Details

Census Year	1940
Location	Kings-County, New York
Surname	Cassidy
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	65
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York City (Brooklyn)
1935 Residence (County)	Kings
Naturalization Status	Naturalized
Additional Details
Occupation	Retired
Hours Worked	0
Highest Grade	No 6
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland
Occupation	Retired
Township / Ward	New York City Brooklyn
Est. Birth Year	~1875

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 1940 census.

Name	Relation to head	Relative to John	Age	Birth yr
Margaret Cassidy	Daughter	—	32	~1908
John Cassidy	Head	—	65	~1875
John Cassidy	Son	—	29	~1911
Theresa Cassidy	Spouse	—	60	~1880

Census Appearances

1920

Bronx, New …

Head, age 50

Bronx, New York · implied b. ~1870 — 9 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cassidy
Given Name	John J.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Ireland
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Salesman
Industry	Lumber
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Home Owned/Rented	R
Birth Country	Ireland
Birthplace (normalized)	ireland

1930

Nassau, New …

Head, age 55

Nassau, New York · implied b. ~1875 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cassidy
Given Name	John J
Relationship to Head	Head
Sex	M
Color / Race	White
Age	55
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1880
Age at First Marriage	27
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Mechanic
Industry	Electric
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	English
Home Owned/Rented	O
Home Value / Rent	11,000
Radio Set	R
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Kings-County, New …

Head, age 65

Kings-County, New York · implied b. ~1875 — 4 household members

Surname	Cassidy
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	65
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York City (Brooklyn)
1935 Residence (County)	Kings
Naturalization Status	Naturalized
Occupation	Retired
Hours Worked	0
Highest Grade	No 6
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

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

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This person

Anchor record

John Cassidy

Head · 1940 · age 65 · b. ~1875 · 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

39 people indexed on this census page (nara:1940:m-t0627-02605-00964)

Line	Name	Age	Relation	Occupation	Birthplace
1	James P. Murphy	18	Son	School	Brooklyn
2	Miriam Torney	31	Head	Bank	Brooklyn
3	Philip Rubensohn	69	Head	Childrens Dress	New York
4	Leo Rubensohn	58	Brother	Clothing	New York
5	Alexander Rubensohn	49	Brother	—	New York
6	Jacob Rubensohn	46	Brother	Furnishing Goods	New York
7	Katherina Schreifer	40	Maid	Maid	Poland
8	Antonio Salvato	57	Head	Shoe Maker	Italy
9	Lena Salvato	49	Wife	Housewife	Italy
10	Joseph Bottitta	33	Son-in-law	Self	New York
11	Grace Bottitta	31	Daughter	—	Brooklyn
12	Merta Bottitta	2	Daughter	—	New York
13	John Cassidy THIS PERSON	65	Head	Retired	Ireland
14	Theresa Cassidy	60	Wife	—	New York
15	Margaret Cassidy	32	Daughter	Liquor	Brooklyn
16	John Jr. Cassidy	29	Son	—	Brooklyn
17	James Kyle	48	Head	Borden	Brooklyn
18	Ella Kyle	49	Wife	—	Brooklyn
19	Warren Kyle	18	Son	Gen. Elect.	Brooklyn
20	Pearl Kyle	18	Daughter	School	Brooklyn
21	Ruth Kyle	15	Daughter	School	Brooklyn
22	Samuel Adelberg	47	Head	London Outfit	Chicago
23	Elizabeth Adelberg	43	Wife	—	New York
24	Richard Rush	17	Foster Son	School	Brooklyn
25	Calvin Kaufman	14	Foster Son	School	Brooklyn
26	Robert Zaboy	14	Foster Son	School	Brooklyn
27	Antonio Consolo	54	Head	—	Italy
28	Mary Consolo	44	Wife	Housewife	Italy
29	Louis Consolo	22	Son	W.P.A.	Penn
30	Francis Consolo	10	Daughter	School	New York
31	William Dvalcott	66	Head	Own Biz	Brooklyn
32	Agnes Dvalcott	60	Wife	—	Brooklyn
33	Leslie Dvalcott	33	Son	Printers	New York
34	Viola Dvalcott	22	Daughter	H. S. Kress	Brooklyn
35	Donald Dvalcott	19	Son	Bench Wire	Brooklyn
36	M. Goldberg	56	Head	Tailor	Russia
37	Sannie Goldberg	51	Wife	Housewife	Russia
38	Jack H. Goldberg	24	Son	Mail	N.Y.
39	Rose Goldberg	21	Daughter	Coal Yard	N.Y.

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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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