John Leahy — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this John Leahy across the 1920, 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 3-person household.

Age 58 b. ~1882 Male Head Born: New York Married

1940 Census Record Details

Census Year	1940
Location	Erie-County, New York
Surname	Leahy
Given Name	John J.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	58
Marital Status	Married
Birthplace	New York
1935 Residence (City)	Buffalo city
1935 Residence (County)	Erie
Additional Details
Occupation	Repair man
Industry	Telephone Co
Class of Worker	PW
Hours Worked	40
Income (1939)	2800
Highest Grade	H 4
1935 Residence	Same house
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Occupation	Repair Man
Township / Ward	Buffalo City
Est. Birth Year	~1882

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 John	Age	Birth yr
John Leahy	Son	—	26	~1914
John Leahy	Head	—	58	~1882
Eva Leahy	Spouse	—	56	~1884

Census Appearances

1920

Erie, New …

Head, age 38

Erie, New York · implied b. ~1882 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Leahy
Given Name	John J
Relationship to Head	Head
Sex	M
Color / Race	White
Age	38
Marital Status	Married
Birthplace	New York
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Electrician
Industry	Telephone Co
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	R
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Erie, New …

Head, age 48

Erie, New York · implied b. ~1882 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Leahy
Given Name	John J.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	48
Marital Status	Married
Birthplace	New York
Age at First Marriage	23
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Electrician
Industry	Telephone
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	O
Home Value / Rent	6500
Radio Set	R
Veteran	No
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1940

Erie-County, New …

Head, age 58

Erie-County, New York · implied b. ~1882 — 3 household members

Surname	Leahy
Given Name	John J.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	58
Marital Status	Married
Birthplace	New York
1935 Residence (City)	Buffalo city
1935 Residence (County)	Erie
Occupation	Repair man
Industry	Telephone Co
Class of Worker	PW
Hours Worked	40
Income (1939)	2800
Highest Grade	H 4
1935 Residence	Same house
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

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

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This person

Anchor record

John Leahy

Head · 1940 · age 58 · b. ~1882 · 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 — Erie-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02824-00116)

Line	Name	Age	Relation	Occupation	Birthplace
41	Grace Mann	8	Daughter	—	New York
42	John J. Leahy THIS PERSON	58	Head	Repair Man	New York
43	Eva W. Leahy	56	Wife	—	New York
44	John F. Leahy	26	Son	Surveyor	New York
45	Olive B. Jolls	49	Head	Fitting	New York
46	Matilda M. Jolls	48	Wife	—	New York
47	Charles Endress	31	Head	Testing Mechanic	New York
48	Gertrude Endress	27	Wife	—	New York
49	Sally Ann Endress	7	Daughter	—	New York
50	Charles Endress	3	Son	—	New York
51	Bernard Kane	32	Brother-in-law	Brakeman	New York
52	Pearl D. Kane	30	Sister-in-law	—	New York
53	George W. Henny	34	Head	Manager	New York
54	Helen A. Henny	34	Wife	—	Kansas
55	Dwight F. Henny	7	Son	—	New York
56	Elizabeth Summers	61	Head	—	New York
57	Agnes Summers	37	Daughter	Saleslady	New York
58	Gertrude Summers	38	Daughter	—	New York
59	Harold R. Buerger	32	Head	Storekeeper	New York
60	Mary E. Buerger	32	Wife	—	New York
61	William Schlotman	27	Head	Traffic Clerk	New York
62	Dorothy M. Schlotman	27	Wife	—	Illinois
63	Sandra Schlotman	0	Daughter	—	New York
64	William A. Schlotman	56	Father	Service Man	New York
65	Clara Schlotman	53	Mother	—	New York
66	David Maser	45	Head	Heater	New York
67	Fayette M. Maser	45	Wife	—	New York
68	Richard A. Maser	22	Son	—	New York
69	Ruth Maser	18	Daughter	—	New York
70	Edward J. Godfrey	32	Head	Fireman	New York
71	Dorothy A. Godfrey	29	Wife	—	New York
72	Dorothy Marie Godfrey	2	Daughter	—	New York
73	Eldon J. Whipple	53	Head	Attendant Supervisor	Massachusetts
74	Maude S. Whipple	54	Wife	—	New York
75	Melvin Kneer	8	Foster son	—	New York
76	Elizabeth Kuchenmeister	72	Head	—	Germany
77	Emerson Kipp	55	Head	Barber	Canada-English
78	Fannie R. Kipp	55	Wife	—	Canada-English
79	Phillip Thurston	36	Head	Lineman	New York
80	Mary E. Thurston	36	Wife	Stenographer	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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