Mary Kirby — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Kirby across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 2-person household.

Age 61 b. ~1879 Female Head Born: Ireland Widowed

1940 Census Record Details

Census Year	1940
Location	Kings-County, New York
Surname	Kirby
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	61
Marital Status	Widowed
Birthplace	Ireland
1935 Residence (City)	New York
1935 Residence (County)	Kings
Naturalization Status	Naturalized
Additional Details
Class of Worker	0
Highest Grade	No 6
1935 Residence	Same House
Birth Country	Ireland
Birthplace (normalized)	ireland
Township / Ward	New York
Est. Birth Year	~1879

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Mary Kirby	Daughter	—	31	~1909
Mary Kirby	Head	—	61	~1879

Census Appearances

1920

New York, …

Other, age 40

New York, New York · implied b. ~1880 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kirby
Given Name	Margaret
Relationship to Head	Servant
Sex	F
Color / Race	White
Age	40
Marital Status	Single
Birthplace	Ireland
Year of Immigration	1901
Naturalization Status	Alien
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Waitress
Industry	Private
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1930

New York, …

Other, age 51

New York, New York · implied b. ~1879 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kirby
Given Name	Margaret
Relationship to Head	Servant
Sex	F
Color / Race	White
Age	51
Marital Status	Single
Birthplace	Ireland
Naturalization Status	Alien
Year of Immigration	1895
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Servant
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Ireland
Birthplace (normalized)	ireland

1940

Kings-County, New …

Head, age 61

Kings-County, New York · implied b. ~1879 — 2 household members

Surname	Kirby
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	61
Marital Status	Widowed
Birthplace	Ireland
1935 Residence (City)	New York
1935 Residence (County)	Kings
Naturalization Status	Naturalized
Class of Worker	0
Highest Grade	No 6
1935 Residence	Same House
Birth Country	Ireland
Birthplace (normalized)	ireland

Model Tree

Linked across censuses

Our Model Tree links Mary Kirby 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 Kirby

Head · 1940 · age 61 · b. ~1879 · 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-t0627-02562-00307)

Line	Name	Age	Relation	Occupation	Birthplace
1	Michael Carbona	35	Son	—	New York
2	Michael Nomilitono	28	Head	Washer	New York
3	Brother Bruno	None	M	Grocery Store	—
4	Philomena Nomilitono	21	Sister	—	New York
5	Louis Franco	65	Head	—	Italy
6	Antoinette Franco	58	Wife	—	Italy
7	Salvatore Franco	31	Son	Driver	New York
8	Andrew Franco	28	Son	Driver	New York
9	Lucy Franco	21	Daughter	Finisher	New York
10	Michael Greco	31	Head	Private	New York
11	Anna Greco	32	Wife	—	New York
12	John Greco	8	Son	—	New York
13	Louis Greco	4	Son	—	New York
14	Anthony Amodeo	52	Head	Furniture-Polisher	Italy
15	Lucy Amodeo	47	Wife	—	Italy
16	Mary Amodeo	25	Daughter	Salesgirl	New York
17	Joseph Amodeo	24	Son	Loader	New York
18	Jennie Amodeo	22	Daughter	Operator	New York
19	Alfonso Amodeo	20	Son	—	New York
20	Lucy Amodeo	14	Daughter	—	New York
21	Angelina Guttiere	39	Sister-in-law	—	New York
22	Charles H. Wyckoff	70	Head	Bookkeeper	New York
23	Bertha A. Wyckoff	47	Wife	—	New York
24	Joseph John	35	Head	Incinerator	New York
25	Margaret John	37	Wife	—	New Jersey
26	John John	7	Son	—	New York
27	Bernette John	2	Son	—	New York
28	Ralph Marino	46	Head	Truck Driver	New York
29	Sadie Marino	41	Wife	—	New York
30	Alice Marino	19	Daughter	Tables Batch	New York
31	Teresa Marino	13	Daughter	—	New York
32	Ralph Jr. Marino	3	Son	—	New York
33	Francis Marino	2	Son	—	New York
34	Vincent Marino	22	Head	Mechanic'S Helper	New York
35	Madeline Marino	24	Wife	—	New York
36	Ralph Marino	2	Son	—	New York
37	Mary Kirby THIS PERSON	61	Head	—	Ireland
38	Mary Kirby	31	Daughter	Seamstress	New York
39	John Rasso	49	Head	Stone Cutter	Italy
40	Barbara Rasso	43	Wife	—	Italy

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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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