Mary Hennessey — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · Kings, New York

Our Model Tree links this Mary Hennessey across the 1920, 1930 and 1940 US Censuses in Kings, New York (XGBoost, ~Confirmed) — first a spouse (b.~1876), then head of a 5-person household.

Age 54 b. ~1876 Female Spouse Born: Ireland Married

1930 Census Record Details

Census Year	1930
Location	Kings, New York
Surname	Hennessey
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	54
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1891
Age at First Marriage	20
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Additional Details
Can Read/Write	Yes
Mother Tongue	Irish
Birth Country	Ireland
Birthplace (normalized)	ireland
Township / Ward	Brooklyn Borough
Est. Birth Year	~1876

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.

5 people recorded at the same address in the 1930 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
John Hennessey	Head	—	60	~1870
Jeremiah Hennessey	Son	—	19	~1911
John Hennessey	Son	—	21	~1909
William Hennessey	Son	—	21	~1909
Mary Hennessey	Spouse	—	54	~1876

Census Appearances

1920

New York, …

Spouse, age 42

New York, New York · implied b. ~1878 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hennessy
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	Ireland
Year of Immigration	1892
Naturalization Status	Naturalized
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Irish
Birth Country	Ireland
Birthplace (normalized)	ireland

1930

Kings, New …

Spouse, age 54

Kings, New York · implied b. ~1876 — 5 household members

Surname	Hennessey
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	54
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1891
Age at First Marriage	20
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read/Write	Yes
Mother Tongue	Irish
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Bronx-County, New …

Head, age 64

Bronx-County, New York · implied b. ~1876 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hennessy
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	64
Marital Status	Widowed
Birthplace	Ireland
1935 Residence (City)	New York City
Naturalization Status	Naturalized
Occupation	Laundress
Industry	Department of Hospitals
Class of Worker	GW
Hours Worked	48
Income (1939)	448
Highest Grade	No 8
1935 Residence	New York
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Hennessey

Spouse · 1930 · age 54 · b. ~1876 · New York

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

Original Census Page

1930 US Federal Census — Kings, New York Open full size

Page Contents

50 people indexed on this census page (ia:1930:newyorkcensus00reel1509:0438)

Line	Name	Age	Relation	Occupation	Birthplace
51	Humphrey	34	—	Salesman	Ireland
52	Humphrey	34	—	—	New York
53	Humphrey	1	—	—	New York
54	Lundeen	30	—	Sailor	Norway
55	Edward St. Claire	27	—	—	New York
56	—	21	—	—	New York
57	Robert Bennett	54	Head	Manager	New York
58	Sadie Bennett	25	Daughter	—	New York
59	James Bennett	21	Son	—	New York
60	Alice Bennett	23	Daughter	Saleslady	New York
61	Raymond E. Cronin	35	Head	Manager	Pennsylvania
62	Mildred Cronin	30	Wife	—	New York
63	Lucille Cronin	12	Daughter	—	Missouri
64	Raymond Cronin	6	Son	—	New York
65	Gustave Kovacs	41	Head	—	New York
66	Helen Kovacs	40	Wife	—	New York
67	Margaret Kovacs	14	Daughter	—	Washington
68	Helen Kovacs	12	Daughter	—	New York
69	John Hennessey	60	Head	—	Ireland
70	Mary Hennessey THIS PERSON	54	Wife	—	Ireland
71	John Hennessey	21	Son	—	New York
72	William Hennessey	21	Son	—	New York
73	Jeremiah Jr. Hennessey	19	Son	—	New York
74	Daniel Doran	41	Head	Salesman	Germany
75	Mary Doran	38	Wife	—	Ireland
76	Madeline Harnes	37	Sister-in-law	Operator	New York
77	Frederic Cahoon	51	Head	—	Connecticut
78	Nellie Cahoon	43	Wife	—	New York
79	Robert Cahoon	6	Son	—	New York
80	Alice Bryant	51	Head	—	New York
81	Harold Bryant	21	Son	—	New York
82	Dorothy Bryant	17	Daughter	—	New York
83	William Kingman	45	Head	Teacher	New York
84	Emma Kingman	44	Wife	—	New York
85	Robert Kingman	10	Son	—	New York
86	William Richmond	63	Head	Engineer	New York
87	Helen Richmond	30	Daughter	—	New York
88	Alice Richmond	28	Daughter	—	New York
89	Helen Wickham	32	Daughter	—	New York
90	Edward Merryman	50	Head	Master	England
91	Mary H. Merryman	44	Wife	—	New York
92	Mary Merryman	20	Daughter	—	New York
93	Marion Merryman	18	Daughter	Typist	New York
94	Edwin Merryman	17	Son	—	New York
95	Owen Merryman	14	Daughter	—	New York
96	Helen Merryman	11	Daughter	—	New York
97	John H. Kuehnemund	63	Head	Tobacco Buyer	Ohio
98	Josephine Kuehnemund	53	Wife	—	Ohio
99	Dorothy M. Kuehnemund	24	Daughter	Secretary	Ohio
100	Patrick Bresley	60	Head	—	Irish Free State

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1930 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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