Mary Larson — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Larson across the 1920, 1930 and 1940 US Censuses in Queens-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1883), then head of a 7-person household.

Age 57 b. ~1883 Female Spouse Born: Ireland Married

1940 Census Record Details

Census Year	1940
Location	Queens-County, New York
Surname	Larson
Given Name	Mary
Relationship to Head	wife
Sex	F
Color / Race	White
Age	57
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	Queens
Naturalization Status	Naturalized
Additional Details
Industry	O
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland
Township / Ward	New York City
Est. Birth Year	~1883

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 1940 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Albert Larson	Head	—	58	~1882
Mary Watters	Other	—		~1940
John Marko	Other	—	6	~1934
Lena Watters	Other	—	22	~1918
William Watters	Other	—	27	~1913
Albert Larson	Son	—	16	~1924
Mary Larson	Spouse	—	57	~1883

Census Appearances

1920

Queens, New …

Spouse, age 34

Queens, New York · implied b. ~1886 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Larson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	34
Marital Status	Married
Birthplace	Ireland
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Waitress
Industry	Tea Room
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1930

Queens, New …

Spouse, age 44

Queens, New York · implied b. ~1886 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Larson
Given Name	Mary S
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	44
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1898
Age at First Marriage	19
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read/Write	Yes
Mother Tongue	English
Veteran	No
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Queens-County, New …

Spouse, age 57

Queens-County, New York · implied b. ~1883 — 7 household members

Surname	Larson
Given Name	Mary
Relationship to Head	wife
Sex	F
Color / Race	White
Age	57
Marital Status	Married
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	Queens
Naturalization Status	Naturalized
Industry	O
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

Our Model Tree links Mary Larson 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 Larson

Spouse · 1940 · age 57 · b. ~1883 · 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 — Queens-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02729-00145)

Line	Name	Age	Relation	Occupation	Birthplace
41	Thomas Cummins	23	son	—	New York
42	John Cafferty	25	boarder	—	New York
43	John Finley	7	boarder	—	New York
44	Albert Larson	58	head	Stationary Engineer	Sweden
45	Mary Larson THIS PERSON	57	wife	—	Ireland
46	Albert Larson	16	son	—	New York
47	William Watters	27	boarder	Delivery Man	New York
48	Lena Watters	22	boarder	—	New York
49	John Marko	6	boarder	—	New York
50	Mary Ann Watters	0	boarder	—	New York
51	John Merkins	46	head	Coffee Salesman	New York
52	Edith Merkins	46	wife	—	England
53	Harry Merkins	54	brother	Time Keeper	New York
54	John Mccormick	49	head	Plumber	New York
55	Elizabeth Mccormick	47	wife	—	New York
56	John Mccormick	25	son	Plumber	New York
57	Joseph Mccormick	20	son	New Worker	New York
58	Dorothy Mccormick	16	daughter	—	New York
59	Evelyn Mccormick	14	daughter	—	New York
60	Louise Mccormick	11	daughter	—	New York
61	Marion Mccormick	9	daughter	—	New York
62	Mildred Mccormick	8	daughter	—	New York
63	William Mccormick	40	brother	—	New York
64	James T. Sheehan	55	head	Police Lieut Office	Newfoundland
65	Mary C. Sheehan	55	wife	—	Ireland
66	Mary L. Sheehan	25	daughter	Printing Clerk	New York
67	Catherine Sheehan	24	daughter	General Clerk	New York
68	James W. Sheehan	22	son	New Worker	New York
69	Elizabeth Sheehan	19	daughter	—	New York
70	Thomas Sheehan	17	son	—	New York
71	John Sheehan	14	son	—	New York
72	Clarence Cohen	37	head	Medical Doctor	New York
73	Bertha Cohen	35	wife	—	New York
74	Lois Cohen	10	daughter	—	New York
75	Richard Cohen	5	son	—	New York
76	Robertina Brown	45	servant	Housekeeper	Ireland
77	David Brown	46	husband	Driver & Houseman	Ireland
78	Katharine Nuss	31	nurse	Nurse Receptionist	Penn
79	Bernard Boyle	42	head	Telephone Installer	New York
80	Agnes Boyle	38	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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