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William Mahoney — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · New York, New York

Our Model Tree links this William Mahoney across the 1920 and 1930 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 14-person household.

Age 19 b. ~1911 Male Son Born: New York Single

1930 Census Record Details

Census Year1930
LocationNew York, New York
SurnameMahoney
Given NameWilliam
Relationship to HeadSon
SexM
Color / RaceWhite
Age19
Marital StatusSingle
BirthplaceNew York
Father's BirthplaceIreland
Mother's BirthplaceIreland
Additional Details
OccupationHelper
IndustryDept Store
Class of WorkerW
Can Read/WriteYes
VeteranNo
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
OccupationHelper
Township / WardManhattan
Est. Birth Year~1911

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.

14 people recorded at the same address in the 1930 census.

Name Relation to head Relative to William Age Birth yr
Margaret Toomey Daughter — 20 ~1910
Helen Toomey Daughter — 15 ~1915
Bernard Toomey Son — 19 ~1911
Patrick Toomey Head — 49 ~1881
Thomas Toomey Son — 20 ~1910
Patrick Mahoney Son — 17 ~1913
Mary Mahoney Daughter — 14 ~1916
Nora Toomey Spouse — 47 ~1883
Mary Toomey Daughter — 16 ~1914
William Mahoney Son — 19 ~1911
John Toomey Son — 11 ~1919
Robert Toomey Son — 7 ~1923
Catherine Toomey Daughter — 9 ~1921
Vincent Toomey Son — 2 ~1928

Census Appearances

1920
New York, …
Son, age 8
New York, New York · implied b. ~1912 — 11 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Mahoney
Given Name William
Relationship to Head son
Sex M
Color / Race White
Age 8
Marital Status Single
Birthplace New York
Father's Birthplace Ireland
Mother's Birthplace Ireland
Occupation none
Speaks English Yes
Mother Tongue English
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1930
New York, …
Son, age 19
New York, New York · implied b. ~1911 — 14 household members
Surname Mahoney
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 19
Marital Status Single
Birthplace New York
Father's Birthplace Ireland
Mother's Birthplace Ireland
Occupation Helper
Industry Dept Store
Class of Worker W
Can Read/Write Yes
Veteran No
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 Mahoney across 2 US Census years (1920 and 1930) in New York, New York, using XGBoost record linkage.
Show:
This person
Anchor record
William Mahoney
Son · 1930 · age 19 · b. ~1911 · New York
★ You are viewing this record
Sibling
Mary Toomey
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mahoney
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Toomey
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Toomey
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Toomey
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Mahoney
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Toomey
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Toomey
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Toomey
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Toomey
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Toomey
Sibling · 1930 · 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

1930 US Federal Census — New York, New York Open full size

Page Contents

50 people indexed on this census page (ia:1930:newyorkcensus00reel1570:1075)

Line Name Age Relation Occupation Birthplace
51 William Brummy 25 Head Tailor Austria
52 Sophie Brummy 23 Wife None Austria
53 John Brummy 14 Son None New York
54 Rose Brummy 8 Daughter None New York
55 Mollie Brummy 32 Sister Operator Austria
56 Mamie Ruff 44 Head None New York
57 Minnie Ruff 44 Wife None New York
58 Max Kramer 42 Head None Russia
59 Rose Kramer 38 Wife None Russia
60 Isadore Kramer 17 Son None New York
61 Ida Kramer 11 Daughter None New York
62 Solomon Stackel 56 Head Painter Rus Poland
63 Sarah Stackel 48 Wife None Rus Poland
64 Abe Stackel 26 Son Clerk Rus Poland
65 Rose Stackel 23 Daughter Clerk Rus Poland
66 Mort Stackel 22 Son Doorman New York
67 Sam Stackel 20 Son Clerk New York
68 James Murphy 55 Head None Ireland
69 Carrie Murphy 35 Wife None New York
70 William Murphy 13 Son None New York
71 John Colonnello 38 Head Clerk Italy
72 Theresa Colonnello 35 Wife None New York
73 Albert Colonnello 18 Son Office Boy New York
74 Eleanor Colonnello 15 Daughter Clerk New York
75 Dora Colonnello 12 Daughter None New York
76 John Jr. Colonnello 3 Son None New York
77 Gloria Colonnello 3 Daughter None New York
78 Lewis Heit 51 Head Carpenter New York
79 Pauline Heit 45 Wife None Germany
80 Rose Vega 47 Boarder None Porto Rico
81 Selena Strail 69 Head None New York
82 Willard Grant 51 Son Clerk New York
83 Nellie Sweeney 45 Head None Ireland
84 Elise Log 22 Head Operator New York
85 Patrick Toomey 49 Head Yardmaster Ireland
86 Nora Toomey 47 Wife None Ireland
87 Thomas Toomey 20 Son None New York
88 Margaret Toomey 20 Daughter Bus Girl New York
89 Bernard Toomey 19 Son Packer New York
90 Mary Toomey 16 Daughter Clerk New York
91 Helen Toomey 15 Daughter None New York
92 John Toomey 11 Son None New York
93 Catherine Toomey 9 Daughter None New York
94 Robert Toomey 7 Son None New York
95 Vincent Toomey 2 Son None New York
96 William Mahoney THIS PERSON 19 Son Helper New York
97 Patrick Mahoney 17 Son Clerk New York
98 Mary Mahoney 14 Daughter None New York
99 Beatrice O'Connor 35 Head None Ireland
100 Margaret O'Connor 11 Daughter None New York

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1930 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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