Mary Leahy — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · New York, New York

Our Model Tree links this Mary Leahy across the 1920 and 1930 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 7-person household.

Age 51 b. ~1879 Female Spouse Born: Scotland Married

1930 Census Record Details

Census Year	1930
Location	New York, New York
Surname	Leahy
Given Name	Mary A
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	51
Marital Status	Married
Birthplace	Scotland
Naturalization Status	Naturalized
Year of Immigration	1890
Age at First Marriage	21
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Additional Details
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Scotland
Birthplace (normalized)	scotland
Township / Ward	Manhattan Bor
Est. Birth Year	~1879

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 1930 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Mary Leahy	Spouse	—	51	~1879
James Leahy	Son	—	29	~1901
Marie Leahy	Daughter	—	25	~1905
Patrick Leahy	Son	—	28	~1902
Margaret Leahy	Daughter	—	19	~1911
James Leahy	Head	—	70	~1860
Katherine Leahy	Daughter	—	22	~1908

Census Appearances

1920

New York, …

Spouse, age 42

New York, New York · implied b. ~1878 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Leahy
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	Scotland
Year of Immigration	1906
Naturalization Status	Alien
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Janitress
Industry	Apartment House
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Scotland
Birthplace (normalized)	scotland

1930

New York, …

Spouse, age 51

New York, New York · implied b. ~1879 — 7 household members

Surname	Leahy
Given Name	Mary A
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	51
Marital Status	Married
Birthplace	Scotland
Naturalization Status	Naturalized
Year of Immigration	1890
Age at First Marriage	21
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Scotland
Birthplace (normalized)	scotland

Model Tree

Linked across censuses

Our Model Tree links Mary Leahy across 2 US Census years (1920 and 1930) in New York, New York, using XGBoost record linkage.

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This person

Anchor record

Mary Leahy

Spouse · 1930 · age 51 · b. ~1879 · 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 — New York, New York Open full size

Page Contents

50 people indexed on this census page (ia:1930:newyorkcensus00reel1561rs:0854)

Line	Name	Age	Relation	Occupation	Birthplace
51	Leo Graziano	29	Head	Laborer	Italy
52	Concetta Graziano	25	Wife	—	Italy
53	Francis Graziano	0	Daughter	—	New York
54	Mary Corcoran	37	Cousin	Machinist	Italy
55	Mary Hennessy	55	Head	Organist	New York
56	Gertrude Clery	23	Head	—	Ireland
57	Margaret Clery	25	Sister	—	Ireland
58	Catherine Clery	23	Sister	—	Ireland
59	Mary Lacy	20	Lodger	—	Ireland
60	Charles Rosakan	38	Head	Fireman	Indiana
61	Clara Rosakan	40	Wife	Book Binder	Indiana
62	Anna Kippel	63	Head	—	Germany
63	Fred Schadt	65	Lodger	Builder	Germany
64	Mary B Carroll	24	Head	Waitress	New York
65	Eugene Carroll	5	Son	—	New York
66	Edward J Carroll	3	Son	—	New York
67	George J Sands	38	Head	Driver	New York
68	Beatrice V Sands	28	Wife	—	New York
69	Annie V Sands	8	Son	—	New York
70	Beatrice E Sands	5	Daughter	—	New York
71	Agatha E Sands	1	Daughter	—	New York
72	James H Sands	42	Brother	Elevator Operator	New York
73	Julia A Sullivan	73	Aunt	—	New York
74	Cecelia H Daley	36	Head	Clerk	New York
75	Dorothy C Mc Cann	25	Sister	Stenographer	New York
76	Frank W Mc Cann	16	Brother	—	New York
77	Evelyn Mc Cann	14	Sister	—	New York
78	Catherine Mc Cann	53	Mother	Stenographer	New York
79	Edward Malloy	40	Head	Boiler Maker	Scotland
80	Margaret Malloy	34	Wife	—	Scotland
81	William Malloy	7	Son	—	Scotland
82	Cecelia Malloy	2	Daughter	—	Scotland
83	Andrew B Downie	21	Lodger	Book Keeper	Scotland
84	Josephine Mc Mahon	40	Head	Press Feeder	New York
85	Catherine Mc Mahon	37	Wife	—	New York
86	Catherine Mc Mahon	11	Daughter	—	New York
87	James Leahy	70	Head	Crane Operator	Irish Free State
88	Mary A Leahy THIS PERSON	51	Wife	—	Scotland
89	James J Leahy	29	Son	Longshoreman	New York
90	Patrick Leahy	28	Son	Chauffeur	New York
91	Marie A Leahy	25	Daughter	Clerk	New York
92	Katherine M Leahy	22	Daughter	Clerk	New York
93	Margaret Leahy	19	Daughter	Typist	New York
94	Joseph Rini	30	Head	Machinist	Italy
95	Blanche Rini	37	Wife	—	Canada
96	Jeanette Rini	8	Daughter	—	New York
97	Dorothy Rini	7	Daughter	—	New York
98	Charles Rini	5	Son	—	New York
99	Catherine Rini	1	Daughter	—	New York
100	Arthur Bergman	35	Head	Packer	New York

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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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