Mary Brennan — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Brennan across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1875), then head of a 3-person household.

Age 65 b. ~1875 Female Spouse Born: Ireland Married

1940 Census Record Details

Census Year	1940
Location	New-York-County, New York
Surname	Brennan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	65
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York
1935 Residence (County)	New York
Naturalization Status	Alien
Additional Details
Class of Worker	0
Highest Grade	6
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland
Township / Ward	New York
Est. Birth Year	~1875

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
Valentine Brennan	Head	—	51	~1889
John Brennan	Son	—	15	~1925
Mary Brennan	Spouse	—	65	~1875

Census Appearances

1920

Westchester, New …

Spouse, age 48

Westchester, New York · implied b. ~1872 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brennan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	48
Marital Status	Married
Birthplace	Ireland
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Class of Worker	1893
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1930

New York, …

Spouse, age 58

New York, New York · implied b. ~1872 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brennan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	58
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1874
Age at First Marriage	21
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read/Write	Yes
Veteran	No
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

New-York-County, New …

Spouse, age 65

New-York-County, New York · implied b. ~1875 — 3 household members

Surname	Brennan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	65
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York
1935 Residence (County)	New York
Naturalization Status	Alien
Class of Worker	0
Highest Grade	6
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

Our Model Tree links Mary Brennan 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 Brennan

Spouse · 1940 · age 65 · b. ~1875 · 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 — New-York-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02646-00916)

Line	Name	Age	Relation	Occupation	Birthplace
1	Margaret Christ	10	Daughter	—	New York
2	Walter Christ	4	Son	—	New York
3	William Colton	29	Head	Clerk	Kansas
4	Louise Colton	30	Wife	—	Alabama
5	Frank Colton	12	Son	—	New York
6	James Hyland	51	Head	Salesman	Ireland
7	Margaret Hyland	53	Wife	—	Ireland
8	Catherine Hyland	21	Daughter	Bookbinder	Conn
9	James Hyland	18	Son	Delivery Boy	Conn
10	John Hyland	16	Son	—	New York
11	Margaret Hyland	14	Daughter	—	New York
12	Mary Carr	14	Sister	—	Conn
13	Charles Mohr	70	Head	Broker	New York
14	Louise Mohr	63	Wife	—	New York
15	Gladys Mohr	30	Daughter	—	New York
16	Clara Stillgebauer	21	Head	Counter Girl	New York
17	Richard Isabelle	59	Head	Foreman	New York
18	Sarah Isabelle	44	Wife	—	New York
19	Charles Isabelle	21	Son	Clerk	New York
20	James Jackey	64	Head	—	New York
21	James Jackey	40	Son	Attendant	New York
22	Celia Jackey	34	Daughter	—	New York
23	Steven Standish	39	Head	Waiter	Jersey
24	Helen Standish	31	Wife	—	Penn
25	Gerald Standish	8	Son	—	New York
26	Barbara Standish	2	Daughter	—	New York
27	Valentine Brennan	51	Head	—	Scotland
28	Mary Brennan THIS PERSON	65	Wife	—	Ireland
29	John Brennan	15	Son	—	New York
30	Bernard Mchugh	45	Head	Fireman	Ireland
31	Alice Mchugh	38	Wife	—	Ireland
32	Thomas Mchugh	14	Son	—	New York
33	Catherine Mchugh	9	Daughter	—	New York
34	Patrick Mchugh	8	Son	—	New York
35	Bernard Mchugh	6	Son	—	New York
36	Peter Mchugh	3	Son	—	New York
37	Clifford Lockwood	39	Head	Bar Tender	Maine
38	Nora Lockwood	32	Wife	Waitress	England
39	Robert Lockwood	7	Son	—	New Jersey
40	Jane Boyle	60	Mother	—	Ireland

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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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