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William Hartman — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · Nassau, New York

Our Model Tree links this William Hartman across the 1920 and 1930 US Censuses in Nassau, New York (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 8-person household.

Age 15 b. ~1915 Male Son Born: New York Single

1930 Census Record Details

Census Year1930
LocationNassau, New York
SurnameHartman
Given NameWilliam
Relationship to HeadSon
SexM
Color / RaceWhite
Age15
Marital StatusSingle
BirthplaceNew York
Father's BirthplaceNew York
Mother's BirthplaceNew York
Additional Details
Can Read/WriteYes
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
Township / WardLynbrook Village
Est. Birth Year~1915

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 1930 census.

Name Relation to head Relative to William Age Birth yr
Charles Hartman Head — 51 ~1879
Ernest Hartman Son — 12 ~1918
Charles Hartman Son — 25 ~1905
Dorothy Hartman Daughter — 17 ~1913
Albert Hartman Son — 22 ~1908
George Hartman Son — 19 ~1911
Elizabeth Hartman Spouse — 47 ~1883
William Hartman Son — 15 ~1915

Census Appearances

1920
Nassau, New …
Son, age 4
Nassau, New York · implied b. ~1916 — 9 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Hartmann
Given Name William
Relationship to Head Son
Sex M
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
1930
Nassau, New …
Son, age 15
Nassau, New York · implied b. ~1915 — 8 household members
Surname Hartman
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 15
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Can Read/Write Yes
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 Hartman across 2 US Census years (1920 and 1930) in Nassau, New York, using XGBoost record linkage.
Show:
This person
Anchor record
William Hartman
Son · 1930 · age 15 · b. ~1915 · New York
★ You are viewing this record
Sibling
Ernest Hartman
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Hartman
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Hartman
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Hartman
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Hartman
Sibling · 1930 · age 25
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 — Nassau, New York Open full size

Page Contents

50 people indexed on this census page (ia:1930:newyorkcensus00reel1458:0843)

Line Name Age Relation Occupation Birthplace
51 Charles A Bird 60 Head Carpenter Pennsylvania
52 Alice J Bird 48 Wife None New York
53 Daniel J Keller 35 Head — New York
54 Catherine Keller 34 Wife Painter New York
55 Ann Keller 6 Daughter None New York
56 Mary T Keller 2 Daughter None New York
57 Nicholas Fridotoff 43 Head Engineer Russia
58 Gladys A Fridotoff 31 Wife None New York
59 Cheryl R Fridotoff 12 Son — Massachusetts
60 Harold M Walton 35 Head Commercial Traveler Massachusetts
61 Addie Walton 36 Wife None New York
62 Betty R Walton 6 Daughter — New York
63 Harry M Jr Walton 4 Son — New York
64 Agnes Worrington 59 Mother in law — New York
65 Albert E Mercer 37 Head Artist New York
66 Florence R Mercer 37 Wife None Pennsylvania
67 John R Mercer 8 Son — New York
68 Emma Mercer 64 Mother None England
69 William H De Witt 60 Head Musical Instrument Maker New York
70 Ruth A De Witt 60 Wife None New York
71 Adelaide Duning 84 Head None Germany
72 Frederick Duning 48 Son Dealer New York
73 Marie W Duning 43 Daughter Teacher New York
74 Michael Bonagura 38 Head Superintendent New York
75 Rose Bonagura 33 Wife None New York
76 Irene Bonagura 16 Daughter Stenographer New York
77 Joseph Bonagura 13 Son — New York
78 George Bonagura 11 Son — New York
79 Lucille Bonagura 9 Daughter — New York
80 Muriel Bonagura 8 Daughter — New York
81 Roslyn Bonagura 6 Daughter — New York
82 Robert Bonagura 5 Son — New York
83 Charles J Hartman 51 Head Cabinet Maker New York
84 Elizabeth Hartman 47 Wife None New York
85 Charles Jr Hartman 25 Son Electrician New York
86 Albert Hartman 22 Son Butcher New York
87 George Hartman 19 Son Electrician New York
88 Dorothy Hartman 17 Daughter None New York
89 William Hartman THIS PERSON 15 Son — New York
90 Ernest Hartman 12 Son — New York
91 George F Miller 53 Head Dealer New York
92 Mary A Miller 53 Wife None New York
93 James Mackrell 71 Head Ironworker North Ireland
94 Louisa Mackrell 66 Wife None England
95 Jennie Haggard 40 Daughter Milliner New York
96 Lorraine Haggard 16 Daughter — Washington D.C.
97 Millicent Haggard 14 Daughter — New York
98 Clara B Haggard 12 Daughter — New York
99 Winifred M Haggard 10 Daughter — New York
100 Clara L Mackrell 37 Daughter Bookkeeper New Jersey

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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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