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John Mcgrath — 1930 US Census Record

Model Tree available

1930 United States Federal Census · Essex, Massachusetts

Our Model Tree links this John Mcgrath across the 1910, 1920 and 1930 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1905), then head of a 5-person household.

Age 25 b. ~1905 Male Son Born: Massachusetts Single

1930 Census Record Details

Census Year1930
LocationEssex, Massachusetts
SurnameMcGrath
Given NameJohn H.
Relationship to HeadSon
SexM
Color / RaceWhite
Age25
Marital StatusSingle
BirthplaceMassachusetts
Father's BirthplaceMassachusetts
Mother's BirthplaceMassachusetts
Additional Details
OccupationMachinist
IndustryIndustrial Pl.
Class of WorkerW
Can Read/WriteYes
VeteranNo
Birth StateMassachusetts
Birth CountryUnited States
Birthplace (normalized)massachusetts
OccupationMachinist
Township / WardLynn City
Est. Birth Year~1905

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.

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

Name Relation to head Relative to John Age Birth yr
John Mcgrath Head — 59 ~1871
Raymond Mcgrath Son — 23 ~1907
John Mcgrath Son — 25 ~1905
Walter Mcgrath Son — 22 ~1908
Amelia Mcgrath Spouse — 54 ~1876

Census Appearances

1910
Essex, Massachusetts
Son, age 6
Essex, Massachusetts · implied b. ~1904 — 5 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McGrath
Given Name John H.
Relationship to Head Son
Sex M
Color / Race White
Age 6
Marital Status Single
Birthplace Massachusetts
Father's Birthplace Massachusetts
Mother's Birthplace Massachusetts
Can Read Yes
Can Write Yes
Speaks English English
Birth State Massachusetts
Birth Country United States
Birthplace (normalized) massachusetts
1920
Essex, Massachusetts
Son, age 15
Essex, Massachusetts · implied b. ~1905 — 5 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname McGrath
Given Name John H.
Relationship to Head Son
Sex M
Color / Race White
Age 15
Marital Status Single
Birthplace Massachusetts
Father's Birthplace Massachusetts
Mother's Birthplace Massachusetts
Can Read Yes
Can Write Yes
Speaks English Yes
Birth State Massachusetts
Birth Country United States
Birthplace (normalized) massachusetts
1930
Essex, Massachusetts
Son, age 25
Essex, Massachusetts · implied b. ~1905 — 5 household members
Surname McGrath
Given Name John H.
Relationship to Head Son
Sex M
Color / Race White
Age 25
Marital Status Single
Birthplace Massachusetts
Father's Birthplace Massachusetts
Mother's Birthplace Massachusetts
Occupation Machinist
Industry Industrial Pl.
Class of Worker W
Can Read/Write Yes
Veteran No
Birth State Massachusetts
Birth Country United States
Birthplace (normalized) massachusetts

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 John Mcgrath across 3 US Census years (1910, 1920 and 1930) in Essex, Massachusetts, using XGBoost record linkage. Identified parents: father John Mcgrath (~0.92 confidence) and father John Mcgrath (~0.92 confidence) and father John Mcgrath (~0.92 confidence) and mother Amelia Mcgrath (~0.92 confidence) and mother Amelia Mcgrath (~0.92 confidence) and mother Julia Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1 Parents confidence ≈ 0.92
Father
John Mcgrath
b. ~1868
Source father
● Household · direct · ~0.92
Father
John Mcgrath
b. ~1871
Source father
● Household · direct · ~0.92
Father
John Mcgrath
b. ~1872
Source father
● Household · direct · ~0.92
Mother
Amelia Mcgrath
b. ~1876
Source mother
● Household · direct · ~0.92
Mother
Amelia Mcgrath
b. ~1877
Source mother
● Household · direct · ~0.92
Mother
Julia Mcgrath
b. ~1877
Source mother
● Household · direct · ~0.92
This person
Anchor record
John Mcgrath
Son · 1930 · age 25 · b. ~1905 · Massachusetts
★ You are viewing this record
Sibling
Walter Mcgrath
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Mcgrath
Sibling · 1930 · age 23
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 — Essex, Massachusetts Open full size

Page Contents

50 people indexed on this census page (ia:1930:massachusettscensus00reel900:0932)

Line Name Age Relation Occupation Birthplace
1 Daniel L Driscoll 62 Head Machinist Massachusetts
2 Julia F Driscoll 67 Wife — Canada-French
3 Liberato Iavasella 49 Head Fireman Italy
4 Angelina Iavasella 44 Wife — Italy
5 Adeline Iavasella 20 Daughter — Massachusetts
6 Guerino Iavasella 19 Son Embosser Massachusetts
7 Victor Iavasella 16 Son — Massachusetts
8 Violet Iavasella 14 Daughter — Italy
9 Dorothy Iavasella 11 Daughter — Italy
10 Frank Bellonio 44 Head Tool Maker Italy
11 Annie Bellonio 47 Wife Welder Italy
12 Amelia Bellonio 19 Daughter Finisher Italy
13 Joseph Bellonio 15 Son — Massachusetts
14 Antoinette Bellonio 14 Daughter — Massachusetts
15 Eleanor Bellonio 12 Daughter — Massachusetts
16 Orville P. Benedict 35 Head Machinist New York
17 Edna L. Benedict 33 Wife — New York
18 James W. Benedict 11 Son — Massachusetts
19 Thomas W. Brennan 66 Head Draw Tender Massachusetts
20 Croslyne J. Brennan 54 Wife — Massachusetts
21 John J. Mcgrath 59 Head Wood Heeler Massachusetts
22 Amelia A. Mcgrath 54 Wife — Newfoundland
23 John H. Mcgrath THIS PERSON 25 Son Machinist Massachusetts
24 Raymond L. Mcgrath 23 Son Assembler Massachusetts
25 Walter A. Mcgrath 22 Son Floor Layer Massachusetts
26 Wilfred C. Rockwood 51 Head Stitcher Newfoundland
27 Annie Rockwood 40 Wife — Newfoundland
28 Frederick W. Rockwood 16 Son — Massachusetts
29 Ann L. Rockwood 11 Daughter — Massachusetts
30 Marion L. Rockwood 8 Daughter — Newfoundland
31 Mildred G. Rockwood 7 Daughter — Massachusetts
32 John J. Hogan 51 Head Core Maker Massachusetts
33 Rose C. Hogan 47 Wife — Irish Free State
34 John J. Hogan 19 Son Delivery Clerk Massachusetts
35 Francis E. Hogan 17 Son Floor Boy Massachusetts
36 Josephine Hogan 16 Daughter Labeler Massachusetts
37 Ruth Hogan 12 Daughter — Massachusetts
38 Alphonous Hogan 9 Son — Massachusetts
39 Alphonous Hogan 55 Brother Moulder Massachusetts
40 James Shepard 50 Head Oiler Man Newfoundland
41 Alberta M. Shepard 43 Wife — Massachusetts
42 James A. Shepard 21 Son Waiter New York
43 Alberta L. Shepard 17 Daughter — Massachusetts
44 Arthur H. Shepard 16 Son — Massachusetts
45 Lydia V. Shepard 15 Son — Massachusetts
46 Alice N. Shepard 13 Daughter — Massachusetts
47 Walter C. Shepard 11 Son — Massachusetts
48 Ernest J. Shepard 10 Son — Massachusetts
49 Elmer R. Shepard 8 Son — Massachusetts
50 Elizabeth M. Shepard 6 Daughter — Massachusetts

Search for John Mcgrath

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Pedigree Summary

John + 2 siblings
Gen 1 · 6 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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