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Mary Cassidy — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cuyahoga-County, Ohio

Our Model Tree links this Mary Cassidy across the 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.

Age 11 b. ~1929 Female Daughter Born: Ohio Single

1940 Census Record Details

Census Year1940
LocationCuyahoga-County, Ohio
SurnameCassidy
Given NameMary Ruth
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age11
Marital StatusSingle
BirthplaceOhio
1935 Residence (City)Brooklyn Hts.
1935 Residence (County)Cuyahoga
Additional Details
Occupationnone
Highest GradeG-4
1935 ResidenceSame place
Birth StateOhio
Birth CountryUnited States
Birthplace (normalized)ohio
Township / WardBrooklyn Hts
Est. Birth Year~1929

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
Mary Cassidy Daughter — 11 ~1929
Lois Cassidy Daughter — 21 ~1919
Robert Cassidy Head — 52 ~1888
Edgar Cassidy Son — 19 ~1921
Libby Cassidy Son — 17 ~1923
Donald Cassidy Son — 13 ~1927
Harold Cassidy Son — 14 ~1926
Wesley Cassidy Son — 7 ~1933
Agnes Cassidy Spouse — 43 ~1897

Census Appearances

1930
Cuyahoga, Ohio
Daughter, age 1
Cuyahoga, Ohio · implied b. ~1929 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Cassidy
Given Name Mary Ruth
Relationship to Head Daughter
Sex F
Color / Race White
Age 1
Marital Status Single
Birthplace Ohio
Father's Birthplace Ohio
Mother's Birthplace Ohio
Birth State Ohio
Birth Country United States
Birthplace (normalized) ohio
1940
Cuyahoga-County, Ohio
Daughter, age 11
Cuyahoga-County, Ohio · implied b. ~1929 — 9 household members
Surname Cassidy
Given Name Mary Ruth
Relationship to Head Daughter
Sex F
Color / Race White
Age 11
Marital Status Single
Birthplace Ohio
1935 Residence (City) Brooklyn Hts.
1935 Residence (County) Cuyahoga
Occupation none
Highest Grade G-4
1935 Residence Same place
Birth State Ohio
Birth Country United States
Birthplace (normalized) ohio

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 Cassidy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cassidy
Daughter · 1940 · age 11 · b. ~1929 · Ohio
★ You are viewing this record
Sibling
Wesley Cassidy
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edgar Cassidy
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Libby Cassidy
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Cassidy
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Cassidy
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Cassidy
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 — Cuyahoga-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03048-00742)

Line Name Age Relation Occupation Birthplace
41 Lloyd Foote 65 Head Farmer Ohio
42 Clara L. Foote 63 Wife None Ohio
43 Elmer Kneer 40 Head School Industrial Arts Ohio
44 Margaret Kneer 38 Wife None Ohio
45 William Kneer 7 Son — Ohio
46 Robert Kneer 5 Son — Ohio
47 Robert Cassidy 52 Head Farmer Ohio
48 Agnes P. Cassidy 43 Wife None Ohio
49 Lois Cassidy 21 Daughter Librarian Ohio
50 Edgar Cassidy 19 Son Farm Laborer Ohio
51 Libby J. Cassidy 17 Son None Ohio
52 Harold Cassidy 14 Son None Ohio
53 Donald Cassidy 13 Son None Ohio
54 Mary Ruth Cassidy THIS PERSON 11 Daughter None Ohio
55 Wesley Cassidy 7 Son None Ohio
56 Dudley Hain 37 Head Dentist Ohio
57 Dr. Rita Hain 35 Wife Doctor Texas
58 Dudley Jr. Hain 14 Son None Ohio
59 Floride Hene 40 Maid Maid Ohio
60 Patsy Hene 10 Maid's daughter — Ohio
61 Anthony Kloba 62 Head Plumber Ohio
62 Celestine Kloba 61 Wife None Ohio
63 Earl Harris 44 Head Packer Pennsylvania
64 Linda P. Harris 47 Wife None Ohio
65 Robert Harris 24 Son Radio Assembler Ohio
66 Jane Harris 23 Daughter Counter Girl Ohio
67 Fred Heyse 43 Head Doctor Germany
68 Gertrude Heyse 44 Wife None Germany
69 Walter Heyse 10 Son — Ohio
70 Herbert Heyse 9 Son — Ohio
71 Al Martiensen 65 Mother None Germany
72 William Mahlens 35 Head Pressman Ohio
73 Florence Mahlens 34 Wife None Ohio
74 Howard Mahlens 9 Son — Ohio
75 Paul Mahlens 5 Son — Ohio
76 Howard Bartel 48 Head Mail Carrier Ohio
77 Hazel Bartel 44 Wife None Ohio
78 Earl H. Bartel 26 Son Musician Ohio
79 Warren E. Bartel 22 Son Attendant Ohio
80 Joan Bartel 10 Son None Ohio

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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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