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Mary Hennessey — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Hennessey across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 7-person household.

Age 12 b. ~1928 Female Daughter Born: New York Single

1940 Census Record Details

Census Year1940
LocationKings-County, New York
SurnameHennessey
Given NameMary
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age12
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)N.Y. City
1935 Residence (County)Kings
Additional Details
Highest GradeNo 4
1935 ResidenceSame Place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardNy City
Est. Birth Year~1928

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
Catherine Hennessey Daughter — 5 ~1935
Andrew Hennessey Son — 2 ~1938
Mary Hennessey Spouse — 34 ~1906
Andrew Hennessey Head — 36 ~1904
Mary Hennessey Daughter — 12 ~1928
Rita Hennessey Daughter — 11 ~1929
Eleanor Hennessey Daughter — 13 ~1927

Census Appearances

1930
Kings, New …
Daughter, age 2
Kings, New York · implied b. ~1928 — 6 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Hennessey
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 2
Marital Status Single
Birthplace New York
Father's Birthplace Northern Ireland
Mother's Birthplace Northern Ireland
Can Read/Write No
Veteran No
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Kings-County, New …
Daughter, age 12
Kings-County, New York · implied b. ~1928 — 7 household members
Surname Hennessey
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 12
Marital Status Single
Birthplace New York
1935 Residence (City) N.Y. City
1935 Residence (County) Kings
Highest Grade No 4
1935 Residence Same Place
Birth State New York
Birth Country United States
Birthplace (normalized) new york

Model Tree

An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Linked across censuses
Our Model Tree links Mary Hennessey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hennessey
Daughter · 1940 · age 12 · b. ~1928 · New York
★ You are viewing this record
Sibling
Rita Hennessey
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Hennessey
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew Hennessey
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Hennessey
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-02572-00268)

Line Name Age Relation Occupation Birthplace
41 Laura Mathers 63 Sister — New York
42 Edward Gurnell 57 Head Cooper Eire
43 Catherine Gurnell 27 Daughter Typist New York
44 Edward Jr. Gurnell 25 Son Handyman New York
45 Theresa Gurnell 21 Daughter — New York
46 Patricia Gurnell 1 Granddaughter — New York
47 Charles Dino 28 Head Accountant New York
48 Jennie Dino 31 Wife — New Jersey
49 Janet Dino 1 Daughter — New York
50 Michael P. Gribbon 45 Head Fireman Eire
51 Helen Gribbon 44 Wife — New York
52 Michael Jr. Gribbon 16 Son — New York
53 Mary Gribbon 15 Daughter — New York
54 John Gribbon 14 Son — New York
55 Hugh Gribbon 12 Son — New York
56 Joseph Gribbon 10 Son — New York
57 Regina Gribbon 6 Daughter — New York
58 Helen Doyle 52 Head — New York
59 Bernard Rock 43 Head Boilermaker New York
60 Elizabeth Rock 42 Wife — New York
61 Mary Rock 20 Daughter Cashier New York
62 Bernadette Rock 8 Daughter — New York
63 Robert Leary 32 Head Foreman Printer New York
64 Eva Leary 30 Wife — New Jersey
65 Janet Leary 5 Daughter — New York
66 Annie Wolf 57 Mother-in-law Cook New York
67 Andrew Hennessey 36 Head Cook New York
68 Mary Hennessey 34 Wife Longshoreman New York
69 Eleanor Hennessey 13 Daughter — New York
70 Mary Hennessey THIS PERSON 12 Daughter — New York
71 Rita Hennessey 11 Daughter — New York
72 Catherine Hennessey 5 Daughter — New York
73 Andrew Hennessey 2 Son — New York
74 Anna Curtin 32 Head Stenographer New York
75 Anna Curtin 77 Mother — New York
76 Mary F. Conroy 28 Head Office Clerk New York
77 Johanna Conroy 71 Mother — Eire
78 Arthur Carter 37 Head Chief Pharmacist Mate New York
79 Marion Carter 31 Wife — Italy
80 Arthur Jr. Carter 9 Son — New Jersey

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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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