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Mary Delaney — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Mary Delaney across the 1930 and 1940 US Censuses in Columbia-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 9-person household.

Age 13 b. ~1927 Female Daughter Born: New York Single

1940 Census Record Details

Census Year1940
LocationColumbia-County, New York
SurnameDelaney
Given NameMary
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age13
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)Hudson City
1935 Residence (County)Columbia
Additional Details
Class of Worker0
Hours Worked0
Highest GradeHs 1
1935 ResidenceSame house
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardHudson City
Est. Birth Year~1927

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
Bartholomew Delaney Son — 22 ~1918
Thomas Delaney Son — 16 ~1924
Catherine Delaney Daughter — 20 ~1920
Mary Delaney Daughter — 13 ~1927
Margaret Delaney Spouse — 48 ~1892
Daniel Martin Other — 71 ~1869
Robert Delaney Son — 11 ~1929
John Delaney Son — 18 ~1922
Bartholomew Delaney Head — 45 ~1895

Census Appearances

1930
Columbia, New …
Daughter, age 4
Columbia, New York · implied b. ~1926 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Delaney
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 4
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Columbia-County, New …
Daughter, age 13
Columbia-County, New York · implied b. ~1927 — 9 household members
Surname Delaney
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 13
Marital Status Single
Birthplace New York
1935 Residence (City) Hudson City
1935 Residence (County) Columbia
Class of Worker 0
Hours Worked 0
Highest Grade Hs 1
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 Delaney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Delaney
Daughter · 1940 · age 13 · b. ~1927 · New York
★ You are viewing this record
Sibling
Bartholomew Delaney
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Delaney
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Delaney
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Delaney
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Delaney
Sibling · 1940 · age 20
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 — Columbia-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02519-00245)

Line Name Age Relation Occupation Birthplace
41 William Onderdonk 70 Head Night Watchman New York
42 Jennie M. Onderdonk 64 Wife — New York
43 Andrew Domguillo 37 Head Electrician New York
44 Sarah Domguillo 31 Wife — New York
45 Bartholomew Delaney 45 Head Office Clerk New York
46 Margaret Delaney 48 Wife — New York
47 Bartholomew Delaney 22 Son Repairman New York
48 Catherine Delaney 20 Daughter Dental Assistant New York
49 John Delaney 18 Son — New York
50 Thomas Delaney 16 Son — New York
51 Mary Delaney THIS PERSON 13 Daughter — New York
52 Robert Delaney 11 Son — New York
53 Daniel Martin 71 Uncle — New York
54 Charles D. Johnson 68 Head Box Maker New York
55 Julia Johnson 65 Wife — New York
56 Christopher Sills 57 Head Electrician Wales
57 Florence Sills 45 Wife — Wales
58 Daisey A. Mayers 61 Head — New York
59 Robert Mayers 27 Son Lawyer New York
60 Dorothy A. Mayers 20 Daughter Dental Hygienist New York
61 John E. Mcnamara 25 Head Printer New York
62 Elizabeth Mcnamara 25 Wife — New York
63 John Mcnamara 1 Son — New York
64 William Mcnamara 0 Son — New York
65 Edward Urban 24 Head Truck Driver New York
66 Sophie Urban 21 Wife — New York
67 William A. Riley 64 Head — New York
68 Victoria A. Riley 54 Wife — New York
69 Edgar H. Christiansen 31 Son — New York
70 Enos Lazette 30 Head — New York
71 Enos Mrs. Lazette 27 Wife — New York
72 Clarence E. Singler 69 Head — New York
73 Mabel A. Singler 65 Wife — New York
74 Roland Singler 38 Son Color Mixer New York
75 Edna Singler 17 Daughter-in-law — New York
76 Matilda Edwards 73 Head — New York
77 Mabel Edwards 38 Daughter Office Clerk New York
78 Jesse Haight 52 Head Policeman New York
79 Carrie Haight 50 Wife — New York
80 Bernice Haight 17 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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