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Thomas Mcmahon — 1930 US Census Record

Model Tree available

1930 United States Federal Census · New York, New York

Our Model Tree links this Thomas Mcmahon across the 1910, 1920 and 1930 US Censuses in New York, New York (XGBoost, ~Confirmed), with identified parents Daniel & Thomas — first a son (b.~1909), then head of a 8-person household.

Age 21 b. ~1909 Male Son Born: New York Single

1930 Census Record Details

Census Year1930
LocationNew York, New York
SurnameMcMahon
Given NameThomas J.
Relationship to HeadSon
SexM
Color / RaceWhite
Age21
Marital StatusSingle
BirthplaceNew York
Father's BirthplaceNew York
Mother's BirthplaceIrish Free State
Additional Details
OccupationCarpenter
IndustryBldg. Contractor
Class of WorkerW
Can Read/WriteYes
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
OccupationCarpenter
Township / WardNew York City
Est. Birth Year~1909

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 Thomas Age Birth yr
Catherine Mcmahon Spouse — 34 ~1896
John Mcmahon Son — 19 ~1911
Walter Mcmahon Son — 9 ~1921
George Mcmahon Son — 14 ~1916
Thomas Mcmahon Son — 21 ~1909
Edward Mcmahon Son — 12 ~1918
Thomas Mcmahon Head — 52 ~1878
Hugh Mcmahon Son — 16 ~1914

Census Appearances

1910
New York, …
Son, age
New York, New York · implied b. ~1910 — 6 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McMahon
Given Name Thomas
Relationship to Head Son
Sex M
Color / Race White
Age 0
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
1920
New York, …
Other, age 10
New York, New York · implied b. ~1910 — 6 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McMahon
Given Name Thomas Jr
Relationship to Head Grand Nephew
Sex M
Color / Race White
Age 10
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Can Read Yes
Can Write Yes
Speaks English Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1930
New York, …
Son, age 21
New York, New York · implied b. ~1909 — 8 household members
Surname McMahon
Given Name Thomas J.
Relationship to Head Son
Sex M
Color / Race White
Age 21
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace Irish Free State
Occupation Carpenter
Industry Bldg. Contractor
Class of Worker W
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.
Model Tree available
Our Model Tree links Thomas Mcmahon across 3 US Census years (1910, 1920 and 1930) in New York, New York, using XGBoost record linkage. Identified parents: father Daniel Mcmahon (~0.92 confidence) and father Thomas Mcmahon (~0.92 confidence) and mother Catherine Mcmahon (~0.92 confidence) and mother Mary Mcmahon (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1 Parents confidence ≈ 0.92
Father
Daniel Mcmahon
b. ~1877
Source father
● Household · direct · ~0.92
Father
Thomas Mcmahon
b. ~1878
Source father
● Household · direct · ~0.92
Mother
Catherine Mcmahon
b. ~1896
Source mother
● Household · direct · ~0.92
Mother
Mary Mcmahon
b. ~1879
Source mother
● Household · direct · ~0.92
This person
Anchor record
Thomas Mcmahon
Son · 1930 · age 21 · b. ~1909 · New York
★ You are viewing this record
Sibling
Walter Mcmahon
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcmahon
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mcmahon
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hugh Mcmahon
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mcmahon
Sibling · 1930 · age 14
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

48 people indexed on this census page (ia:1930:newyorkcensus00reel1577:0859)

Line Name Age Relation Occupation Birthplace
1 Eleanor Laughlin 35 Head — New York State
2 Margaret Laughlin 14 Daughter — New York
3 Patricia Laughlin 12 Daughter — New York
4 John Laughlin 10 Son — New York
5 Eleanor Laughlin 8 Daughter — New York
6 James Laughlin 5 Son — New York
7 Charles Loughman 31 Head — New York State
8 Anna Loughman 31 Wife — New York State
9 Charles Loughman 9 Son — New York
10 Jack Loughman 2 Son — New York
11 Abraham Ali 50 Head Tailor Russia-Poland
12 Eva Ali 45 Wife — Russia-Poland
13 James Ali 25 Son Accountant New York
14 Sally Ali 24 Daughter Stenographer New York
15 Harry Ali 22 Son Inspector New York
16 Isabelle Ali 20 Daughter Clerk New York
17 Beatrice Ali 16 Daughter — New York
18 Thomas Hosins 36 Head Chauffeur Irish Free State
19 Mary Hosins 35 Wife Waitress Irish Free State
20 Hannah Scanlon 26 Boarder Conductor Irish Free State
21 Mary O'Connor 45 Head Demonstrator New York
22 Joseph Bourgeois 33 Head Waiter Massachusetts
23 Carrie O'Connor 35 Head Waitress New York
24 O'Connor None — — —
25 O'Connor None — — —
26 O'Connor None — — —
27 O'Connor None — — —
28 C. A. Nielsen 25 Head — New York
29 Nielsen 26 Wife — Hungary-Austria
30 Louis C. Nielsen 2 Son — New York
31 Adamic 37 Head — London
32 Adamic 18 Son Sales Lady New York
33 Adamic 13 Son — New York
34 Charles Adamic 12 Son — New York
35 Adamic 7 Son — New York
36 Louise Ramos 77 Mother-in-law — London
37 Thomas Mcmahon 52 Head Painter New York
38 Catherine Mcmahon 34 Wife — Irish Free State
39 Thomas J. Mcmahon THIS PERSON 21 Son Carpenter New York
40 John J. Mcmahon 19 Son Carpenter New York
41 Hugh Mcmahon 16 Son Messenger New York
42 George Mcmahon 14 Son — New York
43 Edward Mcmahon 12 Son — New York
44 Walter Mcmahon 9 Son — New York
47 Hazel Murray 32 Head Saleslady Connecticut
48 Jessie Warner 71 Mother-in-law — New York
49 Louis Stilman 41 Head Chauffeur Russia
50 Lillie Stilman 41 Wife — Russia

Related Census Records

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Pedigree Summary

Thomas + 5 siblings
Gen 1 · 4 parents ~0.92
Max depth 4 (1900–1950 window)

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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