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Mary Grady — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Grady across the 1930 and 1940 US Censuses in Chemung-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 8-person household.

Age 17 b. ~1923 Female Daughter Born: New York Single

1940 Census Record Details

Census Year1940
LocationChemung-County, New York
SurnameGrady
Given NameMary Lou
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age17
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)Elmira
1935 Residence (County)Chemung
Additional Details
Income (1939)0
Highest GradeH-3
1935 ResidenceSame house
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardElmira
Est. Birth Year~1923

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.

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

Name Relation to head Relative to Mary Age Birth yr
Robert Grady Son — 14 ~1926
Mary Grady Daughter — 17 ~1923
Loretta Grady Daughter — 5 ~1935
William Grady Head — 45 ~1895
Theresa Grady Daughter — 7 ~1933
Rita Grady Daughter — 12 ~1928
Louise Grady Spouse — 45 ~1895
Paul Grady Son — 9 ~1931

Census Appearances

1930
Chemung, New …
Daughter, age 7
Chemung, New York · implied b. ~1923 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Grady
Given Name Mary Lou
Relationship to Head daughter
Sex F
Color / Race White
Age 7
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Occupation none
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Chemung-County, New …
Daughter, age 17
Chemung-County, New York · implied b. ~1923 — 8 household members
Surname Grady
Given Name Mary Lou
Relationship to Head Daughter
Sex F
Color / Race White
Age 17
Marital Status Single
Birthplace New York
1935 Residence (City) Elmira
1935 Residence (County) Chemung
Income (1939) 0
Highest Grade H-3
1935 Residence Same house
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 Grady across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Grady
Daughter · 1940 · age 17 · b. ~1923 · New York
★ You are viewing this record
Sibling
Loretta Grady
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Grady
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Grady
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Grady
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Grady
Sibling · 1940 · age 9
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 — Chemung-County, New York Open full size

Page Contents

37 people indexed on this census page (nara:1940:m-t0627-02514-00025)

Line Name Age Relation Occupation Birthplace
1 Oscar Wagner 37 Head Barber France
2 Pauline H. Wagner 32 Wife — Pennsylvania
3 Frederic M. Wagner 5 Son — —
4 Laisa Wagner 1 Daughter — —
5 Alice Hammond 56 Head Teacher New York
6 Josephine Hammond 88 Mother — New York
7 Harry S. Weller 76 Boarder — New York
8 George Mcglenn 50 Head Secretary Pennsylvania
9 Helen Mcglenn 50 Wife — New York
10 Robert Mcglenn 23 Son Chemist New York
11 Helen Mcglenn 20 Daughter — New York
12 Anne C. Hamlin 64 Head — Sweden
13 Glenn F. Hamlin 36 Son Grocery Clerk Pennsylvania
14 B. Lloyd Congdon 33 Head Fireman New York
15 Elizabeth Congdon 31 Wife — New York
16 Rita Congdon 25 Daughter Sales Clerk New York
17 Joseph Congdon 24 Son Clerk New York
18 Russell D. Boy 25 Head Operator Illinois
19 Theo Sullivan 45 Mother — Indiana
20 George Boy 17 Brother New Worker Illinois
21 Ephria Spink 66 Head Cabinet Maker New York
22 Mary Spink 70 Wife — New York
23 Charles H. Kendig 55 Head Engineer Pennsylvania
24 Verlia H. Kendig 51 Wife — Pennsylvania
25 Frances L. Roberts 45 Head — New York
26 Edward L. Roberts 20 Son — New York
27 Agnes Adams 44 Head Clerk Pennsylvania
28 William Adams 21 Son Attendant New York
29 Robert C. Adams 19 Son Mechanic New York
30 William J. Grady 45 Head Molder New York
31 Louise Grady 45 Wife — New York
32 Mary Lou Grady THIS PERSON 17 Daughter — New York
33 Robert Grady 14 Son — New York
34 Rita Grady 12 Daughter — New York
35 Paul Grady 9 Son — New York
36 Theresa Grady 7 Daughter — New York
37 Loretta Grady 5 Daughter — 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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