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William Mcgrath — 1940 US Census Record

Linked across censuses

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

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

Age 13 b. ~1927 Male Son Born: New York Single

1940 Census Record Details

Census Year1940
LocationWestchester-County, New York
SurnameMcGrath
Given NameWilliam
Relationship to HeadSon
SexM
Color / RaceWhite
Age13
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)YONKERS
1935 Residence (County)WESTCHESTER
Additional Details
Highest Grade7
1935 ResidenceSame Place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardYonkers
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 William Age Birth yr
David Mcgrath Head — 34 ~1906
William Mcgrath Son — 13 ~1927
Charlotte Mcgrath Daughter — 1 ~1939
Rose-Mary Mcgrath Daughter — 11 ~1929
Winifred Mcgrath Daughter — 15 ~1925
Timothy Mcgrath Son — 8 ~1932
Margaret Mcgrath Spouse — 32 ~1908
Arthur Mcgrath Son — 9 ~1931
Martha Mcgrath Daughter — 5 ~1935

Census Appearances

1930
Westchester, New …
Son, age 3
Westchester, New York · implied b. ~1927 — 5 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McGrath
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 3
Marital Status Single
Birthplace New York
Father's Birthplace Massachusetts
Mother's Birthplace New York
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Westchester-County, New …
Son, age 13
Westchester-County, New York · implied b. ~1927 — 9 household members
Surname McGrath
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 13
Marital Status Single
Birthplace New York
1935 Residence (City) YONKERS
1935 Residence (County) WESTCHESTER
Highest Grade 7
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 William Mcgrath across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcgrath
Son · 1940 · age 13 · b. ~1927 · New York
★ You are viewing this record
Sibling
Arthur Mcgrath
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Mcgrath
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Timothy Mcgrath
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Winifred Mcgrath
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Mcgrath
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose-Mary Mcgrath
Sibling · 1940 · age 11
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 — Westchester-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02864-00021)

Line Name Age Relation Occupation Birthplace
1 Harold Fagnano 15 Brother — New York
2 David Mcgrath 34 Head Painter Mass
3 Margaret Mcgrath 32 Wife — New York
4 Winifred Mcgrath 15 Daughter — New York
5 William Mcgrath THIS PERSON 13 Son — New York
6 Rose-Mary Mcgrath 11 Daughter — New York
7 Arthur Mcgrath 9 Son — New York
8 Timothy Mcgrath 8 Son — New York
9 Martha A. Mcgrath 5 Daughter — New York
10 Charlotte Mcgrath 1 Daughter — New York
11 Walter Holder 39 Head Painter New York
12 Amy Holder 34 Wife — New Jersey
13 Walter Jr. Holder 15 Son — New Jersey
14 Russell Holder 14 Son — New Jersey
15 June Holder 13 Daughter — New Jersey
16 Herbert Holder 8 Son — New York
17 William Entry 31 Head — New York
18 Catherine Entry 26 Wife — New York
19 Helen Entry 10 Daughter — New York
20 William Jr. Entry 8 Son — New York
21 Joseph Entry 7 Son — New York
22 John Entry 4 Son — New York
23 Dorothy Entry 2 Daughter — New York
24 Joseph Mccoy 78 Head Labor New York
25 Mary B. Mccoy 38 Wife — New York
26 Maureen Mccoy 5 Daughter — New York
27 Bernard Mccoy 3 Son — New York
28 Anne Whalen 51 Head — New York
29 Mary Whalen 24 Daughter Clerical New York
30 Thomas Whalen 22 Son Clerk New York
31 Harold Whalen 21 Son Helper New York
32 Harry Heck 62 Head Painter New York
33 Mary Heck 52 Wife — Eire
34 Harry Jr. Heck 37 Son — New York
35 Emma Heck 30 Daughter — New York
36 Margaret Heck 20 Daughter Clerk New York
37 John Ab. Heck 26 Son — New York
38 John Mccarthy 25 Head Labor New York
39 Anna Mccarthy 23 Wife — New York
40 Franklin Mccarthy 4 Son — 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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