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Mary Dwyer — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Dwyer across the 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 9-person household.

Age 16 b. ~1924 Female Daughter Born: New York Single

1940 Census Record Details

Census Year1940
LocationErie-County, New York
SurnameDwyer
Given NameMary
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age16
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)Buffalo city
1935 Residence (County)Erie
Additional Details
Hours Worked0
Highest GradeNo H1
1935 ResidenceSame place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardBuffalo City
Est. Birth Year~1924

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 Mary Age Birth yr
James Dwyer Head — 59 ~1881
Caroline Dwyer Daughter — 10 ~1930
Dennis Dwyer Son — 18 ~1922
John Dwyer Son — 23 ~1917
Caroline Dwyer Spouse — 48 ~1892
Rita Dwyer Daughter — 21 ~1919
Mary Dwyer Daughter — 16 ~1924
George Dwyer Son — 31 ~1909
Patricia Dwyer Daughter — 14 ~1926

Census Appearances

1930
Erie, New …
Daughter, age 6
Erie, New York · implied b. ~1924 — 10 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Dwyer
Given Name Mary E.
Relationship to Head Daughter
Sex F
Color / Race White
Age 6
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace Poland
Can Read/Write Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Erie-County, New …
Daughter, age 16
Erie-County, New York · implied b. ~1924 — 9 household members
Surname Dwyer
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 16
Marital Status Single
Birthplace New York
1935 Residence (City) Buffalo city
1935 Residence (County) Erie
Hours Worked 0
Highest Grade No H1
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 Dwyer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dwyer
Daughter · 1940 · age 16 · b. ~1924 · New York
★ You are viewing this record
Sibling
Caroline Dwyer
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Dwyer
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Dwyer
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Dwyer
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Dwyer
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dennis Dwyer
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 — Erie-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02837-00826)

Line Name Age Relation Occupation Birthplace
1 James Dwyer 59 Head Paper Hanger New York
2 Caroline Dwyer 48 Wife Maid New York
3 George Dwyer 31 Son Waiter New York
4 John Dwyer 23 Son Clerk New York
5 Rita Dwyer 21 Daughter Office Clerk New York
6 Dennis Dwyer 18 Son — New York
7 Mary Dwyer THIS PERSON 16 Daughter — New York
8 Patricia Dwyer 14 Daughter — New York
9 Caroline Dwyer 10 Daughter — New York
10 John Thiel 80 Head — Germany
11 Lillian Thiel 72 Wife — Canada
12 Andrew Stage 39 Head Plant Engineer New York
13 Edith Stage 35 Wife Forelady New York
14 George Nelson 45 Head Inspector Michigan
15 Mildred Nelson 46 Wife — Michigan
16 Alexander Annandale 44 Head Machinist Brazil
17 Ruth Annandale 34 Wife — New York
18 Dora Annandale 13 Daughter — New York
19 John Annandale 9 Son — New York
20 Walter Coller 43 Head Real Estate New York
21 Margaret Coller 41 Wife — New York
22 Mariella Coller 15 Daughter — New York
23 Berton Coller 14 Son — New York
24 Joanne Coller 11 Daughter — New York
25 Mary Coller 69 Mother — New York
26 James Dysinger 35 Head Clerk New York
27 Viola Dysinger 32 Wife Clerk New York
28 Fred Bastian 60 Head Casting New York
29 Mary Bastian 55 Wife — New York
30 Myra Bastian 33 Daughter Office Clerk New York
31 Archibald Braithwaite 60 Head Boiler England
32 Margaret Braithwaite 62 Wife — England
33 Charles Braithwaite 21 Son Tire Adjuster New York
34 Julia Guinther 61 Head — Germany
35 Arthur Christensen 40 Son in law Laborer Michigan
36 Ruth Christensen 37 Wife — New York
37 Darmar Christensen 2 Daughter — New York
38 Karen Christensen 1 Daughter — New York
39 Evelyn Mooney 42 Head Office New York
40 Mary Mooney 70 Mother — Ireland

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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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