William Sullivan — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this William Sullivan across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 3-person household.

Age 63 b. ~1877 Male Head Born: Ireland Married

1940 Census Record Details

Census Year	1940
Location	Kings-County, New York
Surname	Sullivan
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	63
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	Kings
Naturalization Status	Naturalized
Additional Details
Occupation	investigator
Industry	bank
Class of Worker	PW
Hours Worked	44
Income (1939)	2310
Highest Grade	C 1
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland
Occupation	Investigator
Township / Ward	New York City
Est. Birth Year	~1877

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.

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

Name	Relation to head	Relative to William	Age	Birth yr
William Sullivan	Head	—	63	~1877
Joel Sullivan	Son	—	14	~1926
Florence Sullivan	Spouse	—	53	~1887

Census Appearances

1920

Kings, New …

Head, age 45

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

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Sullivan
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	45
Marital Status	Married
Birthplace	Ireland
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Foreman
Industry	Eng. Plant
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

Kings, New …

Head, age 55

Kings, New York · implied b. ~1875

● Primary link · ~Confirmed · 1 source

XGBoost

Surname	Sullivan
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	55
Marital Status	Single
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1884
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Real Estate
Class of Worker	OA
Can Read/Write	Yes
Mother Tongue	Irish
Home Owned/Rented	R
Home Value / Rent	75
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Kings-County, New …

Head, age 63

Kings-County, New York · implied b. ~1877 — 3 household members

Surname	Sullivan
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	63
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	Kings
Naturalization Status	Naturalized
Occupation	investigator
Industry	bank
Class of Worker	PW
Hours Worked	44
Income (1939)	2310
Highest Grade	C 1
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

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

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This person

Anchor record

William Sullivan

Head · 1940 · age 63 · b. ~1877 · 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-t0627-02611-00655)

Line	Name	Age	Relation	Occupation	Birthplace
41	William Sullivan THIS PERSON	63	Head	Investigator	Ireland
42	Florence Sullivan	53	Wife	—	New York
43	Joel Sullivan	14	Son	—	New York
44	Phyllis Kent	40	Head	35	New York
45	Douglas Kent	42	Husband	50	Wash. D.C.
46	Regenia Thorne	65	Mother	—	New York
47	Kathleen Simon	47	Head	—	New York
48	William Novak	32	Head	40	New York
49	Sylvia Novak	29	Wife	—	New York
50	Harry Rothin	32	Head	48	New York
51	Sylvia Rothin	26	Wife	—	New York
52	Richard Rothin	2	Son	—	New York
53	John Foley	43	Head	48	Penn.
54	Bertha Foley	40	Wife	—	Va.
55	Irving Stengler	35	Head	48	New York
56	Murray Epstein	28	Head	48	New York
57	Estella Epstein	21	Wife	44	New York
58	Sadie Forcellon	49	Head	—	New York
59	Coraline Dimarco	77	Mother	Housewife	Italy
60	William Forcellon	28	Head	44	New York
61	Ada Forcellon	27	Wife	—	New York
62	Betty Whiler	49	Head	35	Maine
63	Jenny Whiler	75	Mother	—	Maine
64	Allen Waters	37	Head	48	New York
65	Dorothy Waters	30	Wife	—	New York
66	Leo Charles	25	Head	44	New York
67	Helen Charles	50	Mother	—	New York
68	Herman Gulach	31	Head	Clerk	Germany
69	Rose Gulach	30	Wife	—	New York
70	Louis Mclay	56	Head	Tailor	Russia
71	Lena Mclay	56	Wife	Housewife	Russia
72	Abraham Mclay	25	Son	48	Conn.
73	David Dawn	25	Head	48	New York
74	Ida Dawn	25	Wife	—	New York
75	William Brach	40	Head	44	New York
76	Jean Brach	28	Wife	—	New York
77	Julia Brach	1	Daughter	—	New York
78	Victoria Chamberlin	22	Lodger	48	Va.
79	Florence Meyers	32	Head	44	New York
80	Fanny Meyers	56	Mother	Housewife	Germany

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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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