Mary Mahoney — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Mahoney across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1880), then head of a 5-person household.

Age 60 b. ~1880 Female Spouse Born: Ireland Married

1940 Census Record Details

Census Year	1940
Location	Kings-County, New York
Surname	Mahoney
Given Name	Mary
Relationship to Head	wife
Sex	F
Color / Race	White
Age	60
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	Kings
Naturalization Status	First papers filed
Additional Details
Hours Worked	0
Income (1939)	0
Highest Grade	G 8
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland
Township / Ward	New York City
Est. Birth Year	~1880

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 1940 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Jessie Davis	Daughter	—	30	~1910
John Mahoney	Head	—	61	~1879
Jessie Davis	Other	—	3	~1937
John Davis	Other	—	31	~1909
Mary Mahoney	Spouse	—	60	~1880

Census Appearances

1920

Kings, New …

Spouse, age 44

Kings, New York · implied b. ~1876 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mahoney
Given Name	Mary H
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	44
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Ireland
Year of Naturalization	Un
Birthplace (normalized)	ireland

1930

Kings, New …

Spouse, age 54

Kings, New York · implied b. ~1876 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mahoney
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	1892
Age at First Marriage	20
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Kings-County, New …

Spouse, age 60

Kings-County, New York · implied b. ~1880 — 5 household members

Surname	Mahoney
Given Name	Mary
Relationship to Head	wife
Sex	F
Color / Race	White
Age	60
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	Kings
Naturalization Status	First papers filed
Hours Worked	0
Income (1939)	0
Highest Grade	G 8
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Mahoney

Spouse · 1940 · age 60 · b. ~1880 · 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-t0627-02559-00685)

Line	Name	Age	Relation	Occupation	Birthplace
41	Marilyn Kraft	10	daughter	—	New York
42	Ronald Kraft	9	son	—	New York
43	Thelma Kraft	8	daughter	—	New York
44	Richard Kraft	7	son	—	New York
45	Alfred Forta	33	head	Watcher	New York
46	Elsie Forta	21	wife	Typist	New York
47	Margaret Minch	45	head	—	New York
48	William Minch	21	son	Waiter	New York
49	Evelyn Minch	17	daughter	New Worker	New York
50	Gerard Minch	12	son	—	New York
51	Joseph Geraghty	47	head	Shipfitter	New York
52	Loretta Geraghty	38	wife	—	New York
53	Francis Geraghty	13	son	—	New York
54	Patricia Geraghty	1	daughter	—	New York
55	Mary Stoker	54	head	—	Germany
56	Robert Stoker	33	son	Shipfitter	New York
57	Lorraine Stoker	16	daughter	—	New York
58	John Mahoney	61	head	Night Watchman	Massachusetts
59	Mary Mahoney THIS PERSON	60	wife	—	Ireland
60	Jessie Davis	30	daughter	—	Mass.
61	John Davis	31	son in law	Longshoreman	New York
62	Jessie Davis	3	grand daughter	—	New York
63	Francis Halloran	32	head	Shipfitter	New York
64	Helen Halloran	28	wife	—	New York
65	Francis Jr. Halloran	7	son	—	New York
66	Maureen Halloran	3	daughter	—	New York
67	Patricia Halloran	2	daughter	—	New York
68	Thomas Baker	47	head	Chauffeur	New York
69	Harriet Baker	40	wife	—	New York
70	Dolores Baker	13	daughter	—	New York
71	Walter Baker	9	son	—	New York
72	George Zimmerman	44	head	Stock Clerk	New York
73	Matilda Zimmerman	34	wife	—	New York
74	Geo. Jr. Zimmerman	14	son	—	New York
75	Matilda Zimmerman	9	daughter	—	New York
76	Albert Johnson	44	head	Longshoreman	New York
77	Fred Pote	23	son	Longshoreman	New York
78	Louis Myers	43	head	Longshoreman	New York
79	Louise Myers	43	wife	—	Germany
80	John Herbert	37	head	Cab Driver	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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