Margaret Mahoney — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Margaret Mahoney across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 3-person household.

Age 42 b. ~1898 Female Spouse Born: New York Married

1940 Census Record Details

Census Year	1940
Location	New-York-County, New York
Surname	Mahoney
Given Name	Margaret
Relationship to Head	wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	New York
1935 Residence (City)	New York City
1935 Residence (County)	New York
Additional Details
Highest Grade	No 8
1935 Residence	Same place
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Township / Ward	New York City
Est. Birth Year	~1898

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 Margaret	Age	Birth yr
Thomas Mahoney	Son	—	20	~1920
Thomas Mahoney	Head	—	42	~1898
Margaret Mahoney	Spouse	—	42	~1898

Census Appearances

1920

New York, …

Spouse, age 21

New York, New York · implied b. ~1899 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mahoney
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	21
Marital Status	Married
Birthplace	New York
Father's Birthplace	New York
Mother's Birthplace	New York
Occupation	Secret Service
Industry	Detective Agency
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Richmond, New …

Spouse, age 31

Richmond, New York · implied b. ~1899 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mahoney
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	31
Marital Status	Married
Birthplace	New York
Age at First Marriage	21
Father's Birthplace	New York
Mother's Birthplace	New York
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1940

New-York-County, New …

Spouse, age 42

New-York-County, New York · implied b. ~1898 — 3 household members

Surname	Mahoney
Given Name	Margaret
Relationship to Head	wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	New York
1935 Residence (City)	New York City
1935 Residence (County)	New York
Highest Grade	No 8
1935 Residence	Same place
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

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

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Anchor record

Margaret Mahoney

Spouse · 1940 · age 42 · b. ~1898 · 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-t0627-02658-00730)

Line	Name	Age	Relation	Occupation	Birthplace
1	Joan Zelenka	2	daughter	—	New York
2	John Zelenka	57	Head	Baker	Czecho Slov
3	Mary Zelenka	57	wife	—	Czecho Slov
4	Mary Zelenka	27	daughter	Stenographer	New York
5	Charles Zelenka	21	son	Stock Clerk	New York
6	William Liebhaber	48	Head	Chief Mech.	Germany
7	Margaret Liebhaber	44	wife	—	New York
8	John Liebhaber	22	son	Shipping Clerk	New York
9	Edward Liebhaber	21	son	Chauffeur	New York
10	Frank Liebhaber	19	son	Stock Clerk	New York
11	Leonard Liebhaber	18	son	—	New York
12	Richard Liebhaber	4	son	—	New York
13	Stephen Varga	59	Head	Carpenter	Hungary
14	Elizabeth Varga	50	wife	—	Hungary
15	Pauline Gezalla	19	daughter	Salesclerk	New York
16	John Cullen	30	Head	Oiler	New York
17	Marion Cullen	25	wife	—	New York
18	Patricia Cullen	1	daughter	—	New York
19	August Freilinger	35	Head	Upholsterer	Germany
20	Anna Freilinger	36	wife	—	Germany
21	Max Bohn	48	Head	Manager	Hungary
22	Lizzie Bohn	42	wife	Helper In Store	Hungary
23	John Bohn	25	son	Engineering	New York
24	Joseph Kajicek	55	Head	Furn Mover	New York
25	Louise Kajicek	49	wife	—	New York
26	Charles Kajicek	23	son	Chauffeur	New York
27	Joseph Zellenka	53	Head	Riveter	Czecho Slov
28	Agnes Zellenka	51	wife	—	Czecho Slov
29	Thomas Mahoney	42	Head	R.R. Clerk	New York
30	Margaret Mahoney THIS PERSON	42	wife	—	New York
31	Thomas Jr Mahoney	20	son	Clerk	New York
32	Sebastian Schmatz	51	Head	Body Builder	Germany
33	Amila Schmatz	62	cousin	—	Germany
34	John Razny	56	Head	Manager	Poland
35	Anna Razny	52	wife	—	Poland
36	Mike Razny	25	son	Clerk	Chester Pa
37	Joseph Razny	23	son	Laborer	Chester Pa
38	Joanna Razny	20	daughter	Assist Nurse	New York
39	Joseph Barrett	52	Head	Laborer	New York
40	Josephine Barrett	47	wife	—	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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