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Mary Irwin — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Irwin across the 1930 and 1940 US Censuses in Cayuga-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 7-person household.

Age 20 b. ~1920 Female Daughter Born: New York Single

1940 Census Record Details

Census Year1940
LocationCayuga-County, New York
SurnameIrwin
Given NameMary
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age20
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)Stirling Town
1935 Residence (County)Cayuga
Additional Details
Occupationclerk
Industrylunch counter
Class of WorkerPW
Hours Worked40
Highest GradeH 3
1935 ResidenceSame place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
OccupationClerk
Township / WardStirling Town
Est. Birth Year~1920

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
Carl Irwin Head — 52 ~1888
Betty Irwin Daughter — 13 ~1927
Allen Irwin Son — 21 ~1919
Neil Irwin Son — 10 ~1930
Mary Irwin Daughter — 20 ~1920
Ethel Irwin Spouse — 53 ~1887
Blanche Irwin Daughter — 16 ~1924

Census Appearances

1930
Cayuga, New …
Daughter, age 10
Cayuga, New York · implied b. ~1920 — 9 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Irwin
Given Name Mary
Relationship to Head daughter
Sex F
Color / Race White
Age 10
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace Michigan
Occupation none
Can Read/Write Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Cayuga-County, New …
Daughter, age 20
Cayuga-County, New York · implied b. ~1920 — 7 household members
Surname Irwin
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 20
Marital Status Single
Birthplace New York
1935 Residence (City) Stirling Town
1935 Residence (County) Cayuga
Occupation clerk
Industry lunch counter
Class of Worker PW
Hours Worked 40
Highest Grade H 3
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 Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Irwin
Daughter · 1940 · age 20 · b. ~1920 · New York
★ You are viewing this record
Sibling
Blanche Irwin
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Allen Irwin
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Irwin
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Neil Irwin
Sibling · 1940 · age 10
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 — Cayuga-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02508-00756)

Line Name Age Relation Occupation Birthplace
1 Herbert Flack 56 Head Farmer New York
2 Clara Flack 40 Wife — New York
3 Marion Flack 20 Daughter — New York
4 Harold Flack 18 Son Laborer New York
5 Hilda Flack 17 Daughter — New York
6 Evelyn Flack 16 Daughter — New York
7 Gladys Flack 14 Daughter — New York
8 Helen Flack 12 Daughter — New York
9 Marie Flack 10 Daughter — New York
10 Herbert Jr Flack 8 Son — New York
11 Ray Campbell 52 Head Farmer New York
12 Grace Campbell 48 Wife — New York
13 Elmina Campbell 19 Daughter Saleswoman New York
14 Carl Irwin 52 Head Farmer New York
15 Ethel Irwin 53 Wife — Michigan
16 Allen Irwin 21 Son Shipper New York
17 Mary Irwin THIS PERSON 20 Daughter Clerk New York
18 Blanche Irwin 16 Daughter — New York
19 Betty Irwin 13 Daughter — New York
20 Neil Irwin 10 Son — New York
21 Edward Vincent 61 Head Farmer New York
22 Nellie Vincent 60 Wife — New York
23 John Hickey 52 Head Farmer New York
24 Mary Hickey 52 Wife — New York
25 Carl Mcfarland 57 Head Farmer New York
26 Ida Mcfarland 52 Wife — New York
27 Clarence Bracey 35 Lodger Farmhand New York
28 Thomas Elder 58 Head Laborer New York
29 John H Upcraft 57 Head Farmer New York
30 Edna A Upcraft 57 Wife — New York
31 Ada Irwin 72 Head — New York
32 Maurice Irwin 34 Son Farmer New York
33 Dorothy Irwin 32 Daughter-in-law — New York
34 Richard Irwin 6 Grandson — New York
35 Roger Irwin 5 Grandson — New York
36 Lawrence Irwin 30 Head Farmer New York
37 Lillian Irwin 29 Wife — New York
38 Gene Irwin 2 Son — New York
39 Ellery Munk 20 Head Farmer New York
40 Hilda Munk 25 Wife — Wisconsin

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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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