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John Hennessey — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this John Hennessey across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.

Age 15 b. ~1925 Male Son Born: New York Single

1940 Census Record Details

Census Year1940
LocationKings-County, New York
SurnameHennessey
Given NameJohn
Relationship to HeadSon
SexM
Color / RaceWhite
Age15
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)New York City
1935 Residence (County)Kings
Additional Details
Highest GradeNo 7
1935 ResidenceSame Place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardNew York City
Est. Birth Year~1925

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.

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

Name Relation to head Relative to John Age Birth yr
Eva Hennessey Daughter — 31 ~1909
Joseph Hennessey Son — 22 ~1918
Connie Hennessey Daughter — 29 ~1911
Albert Hennessey Head — 53 ~1887
Catherine Hennessey Spouse — 56 ~1884
Mildred Hennessey Daughter — 18 ~1922
John Hennessey Son — 15 ~1925
Albert Hennessey Son — 26 ~1914
Edna Hennessey Daughter — 18 ~1922

Census Appearances

1930
Kings, New …
Son, age 4
Kings, New York · implied b. ~1926 — 4 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Hennessy
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 4
Marital Status Single
Birthplace New York
Father's Birthplace Newfoundland
Mother's Birthplace Newfoundland
Can Read/Write No
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Kings-County, New …
Son, age 15
Kings-County, New York · implied b. ~1925 — 9 household members
Surname Hennessey
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 15
Marital Status Single
Birthplace New York
1935 Residence (City) New York City
1935 Residence (County) Kings
Highest Grade No 7
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 John Hennessey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hennessey
Son · 1940 · age 15 · b. ~1925 · New York
★ You are viewing this record
Sibling
Albert Hennessey
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Hennessey
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Hennessey
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Hennessey
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Connie Hennessey
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Hennessey
Sibling · 1940 · age 18
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-t0627-02583-00813)

Line Name Age Relation Occupation Birthplace
1 Marion Waller 17 Daughter New Worker New York
2 Frank B Krill 53 Head — Germany
3 Frank Jr Krill 18 Son — New Jersey
4 Edward J Conklin 44 Head Tester New York
5 Mary Conklin 41 Wife — New York
6 Frances Conklin 25 Daughter — New York
7 Kenneth Conklin 7 Son — New York
8 Matthew Conklin 38 Brother — New York
9 Charles B Daum 53 Head — New York
10 Helen Winter 87 Mother — Germany
11 Joseph B Conklin 28 Head Cutter New York
12 Rita Conklin 24 Wife — New York
13 Ethel Conklin 3 Daughter — New York
14 Diane M Conklin 0 Daughter — New York
15 William J Krill 48 Head Sweeper New York
16 Margaret Krill 34 Wife — New York
17 James F Krill 12 Son — New York
18 Dolores A Krill 9 Daughter — New York
19 Margaret J Krill 7 Daughter — New York
20 William Jr Krill 2 Son — New York
21 Albert Hennessey 53 Head — New York
22 Catherine Hennessey 56 Wife — New York
23 Eva Hennessey 31 Daughter Candy Wrapper New York
24 Connie Hennessey 29 Daughter Cleaner New York
25 Albert J Hennessey 26 Son Helper New York
26 Joseph Hennessey 22 Son Tray Edge Maker New York
27 Edna Hennessey 18 Daughter — New York
28 Mildred Hennessey 18 Daughter New Worker New York
29 John Hennessey THIS PERSON 15 Son — New York
30 Walter Dietrich 76 Head — New York
31 George B Adell 49 Head Painter New York
32 Margaret Adell 43 Wife — New York
33 Elizabeth Adell 21 Daughter Bead Stringer New York
34 Richard Adell 19 Son Box Selector New York
35 George Jr Adell 17 Son New Worker New York
36 Margaret Adell 8 Daughter — New York
37 Anna B Schaffer 85 Head — Germany
38 Charlotte Schaffer 43 Daughter Cutter New York
39 James B Comiskey 46 Head Laborer New York
40 Margaret Comiskey 43 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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