Mary Fitzgerald — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Fitzgerald across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 5-person household.

Age 50 b. ~1890 Female Head Born: Ireland Widowed

1940 Census Record Details

Census Year	1940
Location	Kings-County, New York
Surname	Fitzgerald
Given Name	Mary
Relationship to Head	head
Sex	F
Color / Race	White
Age	50
Marital Status	Widowed
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	Kings
Naturalization Status	Naturalized
Additional Details
Industry	0
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland
Township / Ward	New York City
Est. Birth Year	~1890

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.

5 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Margaret Fitzgerald	Daughter	—	25	~1915
Mary Fitzgerald	Head	—	50	~1890
Margaret Burns	Other	—	67	~1873
Robert Fitzgerald	Son	—	28	~1912
Patrick Fitzgerald	Son	—	30	~1910

Census Appearances

1920

New York, …

Spouse, age 27

New York, New York · implied b. ~1893 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Fitzgerald
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	27
Marital Status	Married
Birthplace	Ireland
Year of Immigration	1905
Naturalization Status	Naturalized
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1930

Kings, New …

Spouse, age 40

Kings, New York · implied b. ~1890 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Fitzgerald
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Ireland
Naturalization Status	Naturalized
Year of Immigration	1904
Age at First Marriage	21
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read/Write	Yes
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Kings-County, New …

Head, age 50

Kings-County, New York · implied b. ~1890 — 5 household members

Surname	Fitzgerald
Given Name	Mary
Relationship to Head	head
Sex	F
Color / Race	White
Age	50
Marital Status	Widowed
Birthplace	Ireland
1935 Residence (City)	New York City
1935 Residence (County)	Kings
Naturalization Status	Naturalized
Industry	0
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

Our Model Tree links Mary Fitzgerald 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 Fitzgerald

Head · 1940 · age 50 · b. ~1890 · 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 — Kings-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02568-00281)

Line	Name	Age	Relation	Occupation	Birthplace
41	Patrick Twohig	35	head	Fireman	Ireland
42	Evelyn Twohig	39	wife	—	Ireland
43	Ida Twohig	9	daughter	—	New York
44	Evelyn Twohig	4	daughter	—	New York
45	James Twohig	2	son	—	New York
46	Carl Hansen	43	head	Route Salesman	Denmark
47	Karin Hansen	41	wife	—	Denmark
48	Ellen Hansen	16	daughter	—	New York
49	John Hansen	13	son	—	New York
50	Germain Delaby	39	head	—	France
51	Marie Louise Delaby	3	daughter	—	New Jersey
52	James Henley	12	son	—	Washington D.C.
53	Frank Cunningham	27	boarder	Laborer	California
54	Rudy Simmon	41	head	Auto Parts Mechanic	Germany
55	Emily Simmon	38	wife	—	Germany
56	Augusta Scholz	64	mother-in-law	—	Germany
57	Karl Karlsen	43	head	Elevator Operator	Norway
58	Randine Karlsen	42	wife	—	New York
59	Norman Karlsen	20	son	Messenger	New York
60	Julia Karlsen	16	daughter	—	New York
61	Barcus Brot	44	head	Waiter	Austria
62	Anna Brot	43	wife	—	Austria
63	Anna Brot	19	daughter	New Worker	New York
64	Mary Fitzgerald THIS PERSON	50	head	—	Ireland
65	Patrick Fitzgerald	30	son	Clerk	Pennsylvania
66	Robert Fitzgerald	28	son	Assorter	New York
67	Margaret Fitzgerald	25	daughter	—	New York
68	Margaret Burns	67	mother	—	Ireland
69	Joseph Korderis	37	head	Loader	Massachusetts
70	Rose Korderis	38	wife	—	New York
71	Joseph Jr. Korderis	12	son	—	New York
72	Donald Korderis	12	son	—	New York
73	James Higgins	31	head	Stockman	Ireland
74	Joan Higgins	27	wife	—	Ireland
75	Catherine Higgins	3	daughter	—	New York
76	Thomas Murray	36	head	Clerk	New York
77	Lillian Murray	35	wife	—	New York
78	Joan Murray	10	daughter	—	New York
79	Evelyn Murray	7	daughter	—	New York
80	William De Remer	44	head	Electrician	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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