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Mary Lennon — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Lennon across the 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1903), then head of a 6-person household.

Age 37 b. ~1903 Female Spouse Born: Irish Free State Married

1940 Census Record Details

Census Year1940
LocationNew-York-County, New York
SurnameLennon
Given NameMary E.
Relationship to HeadWife
SexF
Color / RaceWhite
Age37
Marital StatusMarried
BirthplaceIrish Free State
1935 Residence (City)New York
1935 Residence (County)New York
Naturalization StatusNaturalized
Additional Details
Highest Grade8
1935 ResidenceSame place
Birthplace (normalized)irish free state
Township / WardNew York
Est. Birth Year~1903

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.

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

Name Relation to head Relative to Mary Age Birth yr
Mary Lennon Spouse — 37 ~1903
James Lennon Son — 15 ~1925
John Lennon Son — 8 ~1932
Robert Lennon Son — 4 ~1936
James Lennon Head — 38 ~1902
Arthur Lennon Son — 12 ~1928

Census Appearances

1930
Bronx, New …
Other, age 28
Bronx, New York · implied b. ~1902 — 3 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Lannon
Given Name Margaret
Relationship to Head Wife-H
Sex F
Color / Race White
Age 28
Marital Status Married
Birthplace Irish Free State
Naturalization Status Alien
Year of Immigration 1920
Age at First Marriage 21
Father's Birthplace Irish Free State
Mother's Birthplace Irish Free State
Occupation none
Can Read/Write Yes
Mother Tongue English
Birthplace (normalized) irish free state
1940
New-York-County, New …
Spouse, age 37
New-York-County, New York · implied b. ~1903 — 6 household members
Surname Lennon
Given Name Mary E.
Relationship to Head Wife
Sex F
Color / Race White
Age 37
Marital Status Married
Birthplace Irish Free State
1935 Residence (City) New York
1935 Residence (County) New York
Naturalization Status Naturalized
Highest Grade 8
1935 Residence Same place
Birthplace (normalized) irish free state

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 Lennon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lennon
Spouse · 1940 · age 37 · b. ~1903 · New York
★ You are viewing this record
Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — New-York-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02672-00654)

Line Name Age Relation Occupation Birthplace
1 John F. Cody 48 Head General Helper Irish Free State
2 Eileen Cody 47 Wife — Irish Free State
3 David J. Cody 13 Son — New York
4 Mary E. Cody 10 Daughter — New York
5 Thomas A. Cody 9 Son — New York
6 Samuel Mullen 55 Head Ass'T Foreman New York
7 Anna Mullen 52 Wife — New York
8 James J. Lennon 38 Head Cab Driver New York
9 Mary E. Lennon THIS PERSON 37 Wife — Irish Free State
10 James G. Lennon 15 Son — New York
11 Arthur P. Lennon 12 Son — New York
12 John V. Lennon 8 Son — New York
13 Robert E. Lennon 4 Son — New York
14 Ida Raab 48 Head — Germany
15 Cecelia Raab 22 Daughter Secretary England
16 Alfred Zervan 49 Lodger Plumber'S Helper New York
17 James Doner 46 Head Machinist Scotland
18 Margaret Doner 44 Wife — Scotland
19 Ann Doner 13 Daughter — New York
20 James Doner 11 Son — Scotland
21 Josephine Doner 8 Daughter — New York
22 Anthony Kondoleon 46 Head Cook Greece
23 Margaret Kondoleon 36 Wife Maid Irish Free State
24 Theodora Kondoleon 11 Son — New York
25 John Kondoleon 11 Son — New York
26 Rhea Kondoleon 4 Daughter — New York
27 Esther Giannini 48 Head — Italy
28 Michael Giannini 20 Son Interior Decorator Italy
29 George Giannini 18 Son Laborer Italy
30 Rose Giannini 15 Daughter — New York
31 Felix Giannini 12 Son — New York
32 Mary Giannini 11 Daughter — New York
33 Robert Abel 45 Head Clerk New Jersey
34 Mae V. Abel 39 Wife — New York
35 Robert J. Jr. Abel 14 Son — New York
36 Joan V. Abel 8 Daughter — New York
37 Kathryn Higgins 34 Sister-in-law Waitress New York
38 John Clark 69 Head — New York
39 William Clark 32 Son Mechanics Helper New York
40 Mary Clark 28 Daughter-in-law — 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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