Mary Kelley — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Kelley across the 1920, 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1864), then head of a 3-person household.

Age 76 b. ~1864 Female Spouse Born: Australia Married

1940 Census Record Details

Census Year	1940
Location	Erie-County, New York
Surname	Kelley
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	76
Marital Status	Married
Birthplace	Australia
1935 Residence (City)	Buffalo City
1935 Residence (County)	Erie
Naturalization Status	Naturalized
Additional Details
Industry	0
Highest Grade	5
1935 Residence	Same Place
Birthplace (normalized)	australia
Township / Ward	Buffalo City
Est. Birth Year	~1864

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 Mary	Age	Birth yr
Thomas Kelley	Head	—	77	~1863
Francis Kelley	Son	—	34	~1906
Mary Kelley	Spouse	—	76	~1864

Census Appearances

1920

Erie, New …

Spouse, age 55

Erie, New York · implied b. ~1865 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kelly
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	55
Marital Status	Married
Birthplace	Australia
Year of Immigration	1905
Naturalization Status	Naturalized
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Year of Naturalization	1910
Birthplace (normalized)	australia

1930

Erie, New …

Other, age 65

Erie, New York · implied b. ~1865 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kelly
Given Name	Mary
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	65
Marital Status	Married
Birthplace	Australia
Naturalization Status	Naturalized
Year of Immigration	1900
Age at First Marriage	26
Father's Birthplace	Irish Free State
Mother's Birthplace	Irish Free State
Can Read/Write	Yes
Mother Tongue	English
Birthplace (normalized)	australia

1940

Erie-County, New …

Spouse, age 76

Erie-County, New York · implied b. ~1864 — 3 household members

Surname	Kelley
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	76
Marital Status	Married
Birthplace	Australia
1935 Residence (City)	Buffalo City
1935 Residence (County)	Erie
Naturalization Status	Naturalized
Industry	0
Highest Grade	5
1935 Residence	Same Place
Birthplace (normalized)	australia

Model Tree

Linked across censuses

Our Model Tree links Mary Kelley 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 Kelley

Spouse · 1940 · age 76 · b. ~1864 · 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-t0627-02838-00056)

Line	Name	Age	Relation	Occupation	Birthplace
1	Edward Smith	31	Head	Dry Cleaner	Canada English
2	Mary Smith	31	Wife	—	Canada English
3	Joan Smith	7	Daughter	—	New York
4	Shirley Smith	3	Daughter	—	New York
5	Percy Smith	56	Father	Dry Cleaner	Canada English
6	Grace Smith	61	Mother	—	Canada English
7	George Ryan	57	Head	Electrician	New York
8	Prudent Laverne	34	Head	Waiter	New York
9	Angie Laverne	31	Wife	—	Italy
10	Emma Laverne	14	Daughter	—	New York
11	Rita Laverne	11	Daughter	—	New York
12	Albert Brock	43	Head	Salesman	Germany
13	Gertrude Brock	43	Wife	Saleslady	New York
14	Cecelia Brock	19	Daughter	Packer	New York
15	Albert Brock	13	Son	—	New York
16	Edward Berios	63	Head	—	New York
17	William Berios	32	Son	Mechanical Engineer	New York
18	Frank Esther Berios	46	Sister	—	New York
19	Ray Markwardt	35	Head	Pressman	New York
20	Doris Markwardt	29	Wife	—	New York
21	William Trevorton	60	Head	Timekeeper	Canada English
22	Katherine Trevorton	50	Wife	—	New York
23	Florence Trevorton	11	Daughter	—	New York
24	Doris Trevorton	9	Daughter	—	New York
25	Edward Mahoney	55	Boarder	—	New York
26	Archie Murphy	48	Head	Bricklayer	New York
27	Martha Murphy	42	Wife	—	New York
28	James Murphy	22	Son	Machinist	New York
29	Ann Murphy	18	Daughter	Salesgirl	New York
30	Floyd De Hura	49	Head	Machinist	New York
31	Mabel De Hura	47	Wife	—	New York
32	Myrtle De Hura	21	Daughter	—	New York
33	Bette De Hura	12	Daughter	—	New York
34	Jean De Hura	11	Daughter	—	New York
35	Irene De Hura	8	Daughter	—	New York
36	Lewis Picard	63	Head	—	New York
37	Isabelle Picard	60	Wife	—	New York
38	Thomas Kelley	77	Head	—	Penn State
39	Mary Kelley THIS PERSON	76	Wife	—	Australia
40	Francis Kelley	34	Son	Laborer	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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